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    Lifestyles and health behaviour

    determinants of health-enhancingbehaviours

    http://homepage.ntlworld.com/gary.sturt/health/lifestyl.htmhttp://homepage.ntlworld.com/gary.sturt/health/lifestyl.htmhttp://homepage.ntlworld.com/gary.sturt/health/lifestyl.htmhttp://homepage.ntlworld.com/gary.sturt/health/lifestyl.htmhttp://homepage.ntlworld.com/gary.sturt/health/lifestyl.htmhttp://homepage.ntlworld.com/gary.sturt/health/lifestyl.htm
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    What are health behaviours?

    Kasl and Cobb (1966) defined three types ofhealth related behaviours. They suggested that;

    a health behaviour is a behaviour aimed at preventingdisease (e.g. eating a healthy diet);

    an illness behaviour is a behaviour aimed at seeking a

    remedy (e.g. going to the doctor); a sick role behaviour is an activity aimed at getting

    well (e.g. taking prescribed medication or resting).

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    What are health behaviours?

    Health behaviours have also being defined by

    Matarazzo (1984) in terms of either: Health impairing habits, which he called "behavioural

    pathogens" (for example smoking, eating a high fat

    diet), or

    Health protective behaviours, which he defined as"behavioural immunogens" (e.g. attending a health

    check).

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    Behaviour and mortality

    50% of mortality from the 10 leading causes of death isdue to behaviour.

    Doll and Peto (1981) estimated that 75% of cancerdeaths were related to behaviour. 90% of all lung cancermortality is attributable to cigarette smoking, which is alsolinked to other illnesses such as cancers of the bladder,

    pancreas, mouth, and oesophagus and coronary heartdisease. Bowel cancer is linked to behaviours such as adiet high in total fat, high in meat and low in fibre.

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    ifestyle andhealth

    About 50% of premature deaths in western

    countries can be attributed to lifestyle(Hamburg et al., 1982). Smokers, on average,

    reduce their life expectancy by five years and

    individuals who lead a sedentary (i.e. none

    active) lifestyle by two to three years

    (Bennett and Murphy, 1997).

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    ifestyle andhealth

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    Holy Four

    Four behaviours in particular are associated withdisease: smoking, alcohol misuse, poor nutrition

    and lower levels of exercise; these are called theholy four.

    Conversely, rarely eating between meals, sleepingfor seven to eight hours each night, and eating

    breakfast nearly every day have been associatedwith good health and longevity (Breslow andEnstrom 1980). Recently high-risk sexual activityhas been added to the risk factor list.

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    Belloc and Breslow (1972)

    Belloc and Breslow (1972) conducted an

    epidemiological study asking a representativesample of 6928 residents of Almeida County,

    California whether they engaged in the

    following seven health practises:

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    Belloc and Breslow (1972)

    1. sleeping seven to eight hours daily

    2. eating breakfast almost every day

    3. never or rarely eating between meals

    4. currently being at or near prescribed heightadjusted weight

    5. never smoking cigarettes6. moderate or no use of alcohol

    7. regular physical activity.

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    Positive attitude

    Having a positive attitude towards lifehas been found to increase longevity

    (Levy et al, 2002).The team used datagathered in 1975 in Oxford, Ohio, wherealmost everybody over 50 wasquestioned about their life and health. By

    tracing the deaths of participants over 23years, the team was able to matchlifespan against attitudes towards ageingexpressed at the start.

    http://homepage.ntlworld.com/gary.sturt/health/times/secret%20of%20long%20life.htmhttp://homepage.ntlworld.com/gary.sturt/health/times/secret%20of%20long%20life.htm
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    Positive attitude

    Participants had been asked to agree or disagree

    with statements such as: Things keep getting

    worse as I get older or I have as much pep as I

    did last year or I am as happy now as I was when

    I was younger. The participants were scored on a

    scale of zero to five, in which five represented the

    most positive attitude towards growing older and

    zero the most negative.

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    Positive attitude

    In theJournal of Personality and Social

    Psychology, the team says that the median

    survival for the most negative thinkers was

    15 years, while for the most positive it was

    22.5 years.

    Controlling for age, sex, wealth, health and

    loneliness did not alter the finding.

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    Evaluation

    There are several methodological criticisms that canbe made of the original study by Belloc andBreslow and the follow-up studies. First, the sampleis not particularly representative as all the

    participants came from the same area in the USA.

    Second, the study establishes a correlation betweenseven specific health preventive behaviours andlongevity, but does not prove that these behavioursactually caused some of the participants to livelonger. It is possible, although unlikely, that someother factorpersonality, for exampleaffected

    both behaviour and lifespan.

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    Evaluation

    The behavioural change approach to promoting

    health raises a couple of ethical issues. First, it can

    lead to victim-blaming. If we believe too stronglythat individuals can prevent themselves from falling

    ill by choosing to carry out health preventive

    behaviours, then we may go on to blame those

    individuals for failing to protect their own health ifthey do fall ill.

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    Evaluation

    There have been cases where doctors haverefused to treat certain patients because they

    felt that they had brought their illnesses onthemselves. The greatest contributions tohealth have been through developments inmedical science and through public health

    initiatives such as improved sanitation, andnot through individual behavioural change.

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    Evaluation

    The second problem with the behavioural

    change approach is the narrow line that

    exists between persuading someone tochange his or her behaviour and coercion.

    Do we have a right to assume that we

    know better than someone else what is

    best for their own health, and to forcethem to change their behaviour?

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    Genetic theories

    Is it possible, however, for apersonsgenetic

    inheritance to directly affect their health-

    related behaviour? It may be, for example,

    that alcoholism is partly hereditary. In his

    book on this topic, Sher (1991) describes

    evidence that the children of alcoholics aremore likely to become alcoholic themselves.

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    Genetic theories

    Although it is notoriouslydifficult to determine whether

    a correlation such as this isdue to genetic factors or arisesas a result of social learning,some psychologists argue that,

    although there probably is nosuch thing as an alcoholismgene, certain geneticallyinherited personality traits

    may pre-dispose an individualtowards alcohol abuse.

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    Family genetics and history of

    dietary risk factors. Several studies have provided evidence

    that family history of dietary risk factors

    may be related to adolescents foodpreferences. Fischer and Dyer (1981)reported that family history of obesity wasrelated to increased intake of sweets, dairy

    products, and fatty foods in a sample of116 high school girls. Their results alsoindicated that having a family history ofheart problems was related to decreased

    consumption of milk, eggs, and saltyfoods.

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    Family genetics and history of

    dietary risk factors. Levine, Lewy, and New (1976) found a

    family history of hypertension to beassociated with a greater prevalence of

    obesity among African Americanadolescents. Some investigators havealso analyzed dietary intake among twin

    populations as evidence of a genetic

    variance for nutrient intake. In one ofthese studies, De Castro (1993) foundsignificant heritabilities for identical andfraternal twins with regard to the

    amount of food energy andmacronutrients eaten daily.

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    Family genetics and history of

    dietary risk factors. In contrast, Fabsitz, Garrison, Feinleib, and

    Hjortland (1978) demonstrated that, in addition to a

    genetic variance, environmental effects (e.g., howfrequently twins saw each other) were important inaccounting for similarities in twins nutrientintakes. These results suggest that there may be an

    interaction between genetic and environmentalfactors that influence eating behaviors amongadolescents.

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    Genetic theories

    Genetic theoriessuggest that there may be agenetic predisposition to becoming an

    alcoholic or a smoker. To examine theinfluences of genetics, researchers haveexamined either identical twins reared apartor the relationship between adoptees and

    their biological parents. Thesemethodologies tease apart the separateeffects of environment and genetics.

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    Genetic theories

    In an early study on genetics and smoking, Sheilds(1962) reported that of 42 twins reared apart, only 9

    were discordant (showed different smokingbehaviour). He reported that 18 pairs were bothnon-smokers and 15 pairs were both smokers. Thisis a much higher rate of concordance than predicted

    by chance. Evidence for a genetic factor in smokinghas also been reported by Eysenck (1990) and in anAustralian study examining the role of genetics in

    both the uptake of smoking (initiation) and

    committed smoking (maintenance) (Murray et al.1985).

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    Genetic theories

    Research into the role of genetics inalcoholism has been more extensive

    and reviews of this literature can befound elsewhere (Peele 1984;Schuckit 1985). However, it has beenestimated that a male child may be

    up to four times more likely todevelop alcoholism if he has abiological parent who is an alcoholic.

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    Behaviourist learning

    theories Classical conditioning is a process in which

    the individual associates an automatic

    response with a neutral stimulus. Ivan Pavlov(18491936) described this process after henoticed that laboratory dogs would salivate

    when he turned a light on because they hadlearnt to associate the light with the presenceof food.

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    Behaviourist learning

    theories

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    Behaviourist learning

    theories Classical conditioning could explain certain health-

    related behaviours such as comfort eating, for

    example. If a parent regularly offers a child sweetsor chocolate at the same time as physical andemotional affection, then the child may learn toassociate sweet foods with the reassuring feelings

    that arise out of parental love. In later life, the childmay try to recreate these pleasant feelings by eatingchocolate when he or she is stressed or depressed.

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    Behaviourist learning

    theories

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    Operant conditioning

    Operant conditioning is when people respond to

    reward or punishment by either repeating a

    particular behaviour, or else stopping it. If anindividual carries out a behaviour that clearly seems

    to be bad for his or her health, such as smoking

    cigarettes, a deeper look may well reveal benefits

    for the individual, such as social approval, the

    nicotine buzz and so on.

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    Operant conditioning

    A striking example of how operant conditioning canaffect health behaviour is the study by Gil et al

    (1988). They conducted research on childrensuffering from a chronic skin disorder that causessevere itching. They videotaped the children withtheir parents in the hospital and observed that when

    parents tried to stop their children scratching (inorder to prevent peeling and infection) this actuallyincreased the scratching behaviour by rewarding itwith attention.

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    Operant conditioning

    When they asked parents to ignore their childrenwhen they scratched and give them positive

    attention when they did not scratch, the amount ofscratching was significantly reduced.

    Drinking, eating, smoking, drug and sexualaddictions all have the irrationalcharacteristic that

    the total amount of pleasure gained from theaddiction seems much less than the suffering caused

    by it. According to learning theorists, the reason forthis lies in the nature of the gradient of

    reinforcement.

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    Operant conditioning

    Addictive behaviours are typically those inwhich pleasurable effects occur rapidly after

    the addictive behaviour while unpleasantconsequences occur after a delay. The simplemechanism of operant conditioning and the

    gradient of reinforcement is able, as it were,to overpower the mindscapacity for rationalcalculation.

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    Social learning

    Social learning occurs when an individual

    observes and imitates another persons

    behaviour, either because the individual

    looks up to that person as a role model or

    else through vicarious reinforcement

    that is, .the individual sees the person beingrewarded for his or her actions.

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    Social learning

    Social learning can clearly be very influentialin encouraging people to do things that are

    bad for their health (for example, a teenagermay take up smoking because he or she hasan admired elder brother who smokes, or

    may try illegal drugs because he or she seesother people taking them and having a goodtime).

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    Social learning

    Another example of how vicarious reinforcement can lead tounhealthy behaviour concerns young women with eatingdisorders, who see images of very thin models in magazines

    being rewarded with success, money, glamour and fame. Onthe other hand, many health promotion campaigns use

    positive role models to try to get people to lead healthierlifestyles. The advertising industry, whose reason for

    existing is to persuade people to change their behaviour,often depicts successful, good-looking and happy peopleusing a certain product in the hope that this will make others

    want to use the product as well.

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    Social learning

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    self-efficacy

    Bandura (1977) has been particularly influential in

    emphasising the importance of learning by

    imitation in linking it to his concept of self-efficacy,personality traits consisting of having confidence in

    ones ability to carry out ones plans successfully.

    People with lower self-efficacy are much more

    likely to imitate undesirable behaviours than those

    with higher self-efficacy.

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    self-efficacy

    Heather and Robertson (1997) give a usefuldiscussion of the application of these principles to

    drinking. Patterns of drinking by parents areobserved by children who may then imitate them inlater life, especially the behaviour of the same sex

    parents. In adolescence, the drinking behaviour of

    respected older peers may also be imitated, andsubsequently that of higher status colleagues atwork, a phenomena, which may explain the

    prevalence of heavy drinking in certain professionssuch as medicine and journalism.

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    Commentary

    Many psychologists criticize behaviourist-learning theories on the grounds that they are

    too mechanistic. In other words, theyassume that human beings respondautomatically to specific situations. Not onlydoes this imply a lack of freewill, but also italso ignores the effect on behaviour ofcognitive factors.

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    Social and environmental

    factors There are many different social and environmental

    factors contributing to peoples health behaviour.

    For example, a common explanation for youngpeople taking drugs or smoking cigarettes is peer

    pressure. It may be that people imitate their peers

    because of the explanation given above that is,

    vicarious reinforcement; they see others getting a

    reward for a certain behaviour, so they copy it.

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    Social and environmental

    factors Social factors such as culture influence

    dietary behaviour. Culture affects an

    individuals food selection, preparation, andeating patterns. Certain tastes or food areassociated with specific feelings andmeanings within a culture (for example, soulfood may denote fried and barbecue meatswithin the African American community).

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    Social and environmental

    factors Mexican American women often feel

    uncomfortable with focusing on themselves

    as individuals therefore a successful

    approach to losing weight would target the

    whole family rather than the individual

    woman (Foreyt et al, 1991).

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    Social and environmental

    factors Television advertising also exerts a larger influence

    over dietary behaviour. Advertisers often target

    adolescents by promoting fast foods high in fat,cholesterol, sodium, and sugar. It has been foundthat childrens television viewing positivelycorrelates with smoking behaviour and attempts to

    influence parents shopping selections (Dietz andGortmaker, 1985). Television viewing is alsohighly correlated with obesity in children (Bowen etal, 1991).

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    Commentary

    Conformity does not exert an equallystrong influence in all situations and with

    all individuals, It is likely to be morepowerful in ambiguous situations, whenothers are perceived as having moreexpertise, or when the individual has lowself-confidence, poor self-esteem and aweak sense of self-efficacy.

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    High-risk sexual behaviour

    Hawkins et al. (1995) reported that the mostfrequent safer sex behaviour amongst well-educated

    heterosexual students was the use of thecontraceptive pill. The least frequent sexual

    practice, reported by only 24% of the sample, wasthe use of condoms. An important factor is that the

    majority of young persons do not see themselves asat risk of HIV infection or have feelings ofinvulnerability towards the disease.

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    Exercise

    Those who are physically active throughout the adultlife live longer than those who are sedentary.

    Paffenburger et al (1986) monitored leisure timeactivity in a cohort of 17000 Harvard graduatesdating back to 1916. Using questionnaires it wasfound that those who were least active after

    graduation had a 64% increased risk of heart attackcompared with their more energetic classmates.Those who expended more than 2000 calories ofenergy in active leisure activities per week lived, onaverage, two and a half years longer than thoseclassified as inactive.

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    Exercise

    About a quarter of the UK population engage in healthpromoting levels of exercise, with a similar picture

    in the USA. In recent years these levels havedramatically increased. For example in Wales 20%of men and 2% of women took sufficient exercisein 1985 but by 1990 this had increased to 27% of

    the population. Those who engage in exercise aremore likely to be young, male and well-educatedadults, members of higher socio-economic groups,and those who have exercised in the past.

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    Exercise

    Those least likely to exercise tend to be in the lower

    socio-economic groups, older individuals, and those

    whose health is likely to be at risk as a consequenceof being overweight and smoking cigarettes

    (Dishman 1982). Obstacles to exercise include not

    having enough time, lack of support from family or

    friends and perceived incapacity due to ageing.

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    five different types of exercise.

    Brannon & Feist (1997) describe five

    different types of exercise.

    1.Isometric exercise involves pushing the

    muscles hard against each other or against an

    immovable object. The exercise strengthens

    muscle groups but is not effective for overall

    conditioning.

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    five different types of exercise.

    2. Isotonic exercise involves the contraction

    of muscles and the movement of joints, as

    in weight lifting. Muscle strength and

    endurance may be improved but the general

    improvement is in body appearance rather

    than improving fitness and health.

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    five different types of exercise.

    3. Isokinetic exercise uses specialised

    equipment that requires exertion for lifting

    and additional effort to return to the starting

    position. This exercise is more effective

    than both isometric and isotonic exercise

    and promotes muscle strength and muscleendurance (Pipes and Wilmore, 1975).

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    five different types of exercise.

    4. Anaerobic exercise involves short, intensive

    bursts of energy without an increased amount of

    oxygen such as in short distance running. Suchexercises improve speed and endurance but do not

    increase the fitness of the coronary and

    respiratory systems and indeed may be dangerous

    for people with coronary heart disease.

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    five different types of exercise.

    5. Aerobic exercise requires dramatically increasedoxygen consumption over an extended period of

    time such as in jogging, walking, dancing, ropeskipping, swimming and cycling. The heart ratemust be in a certain range which is computedfrom a formula based on age and the maximum

    possible heart rate. The heart rate should stay atthis elevated level for at least 12 minutes, andpreferably 15 to 30 minutes. This exerciseimproves the respiratory system and the coronarysystem.

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    Organic & Dynamic Fitness

    Kuntzleman (1978)

    Organic fitness-our capacity for action andmovement determined by inherent factors

    such as genes, age and health status.

    Dynamic fitness-determined by our

    experience.

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    London bus crews

    Maurice et al. (1953)studied London double

    decker bus drivers andtheir conductors. Themore active conductorshad significantly less

    incidence of C. H. D.than did the sedentarydrivers. Can you thinkof any confoundingfactors in this study?

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    Exercise

    Exercise has been found to lower depressivemoods in a variety of people, including

    young pregnant women from ethnicallydiverse backgrounds (Koniak-Griffin, 1994)and nursing home residents aged 66 to 97(Ruuskanen and Parkatti, 1994). Thesefindings could be due to the release ofendogenous Opiates during exercise.

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    Exercise

    Exercise is a buffer against stress. This could be

    because of the positive effect on the immune

    system. Exercise produces a rise in natural killercell activity and an increase in the percentage of T-

    cells (lymphocytes) that bear natural killer cell

    markers (indicating the sites where killer cells are

    produced). This warns off invading cells before

    they have the chance to harm the body.

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    Exercise

    Both exercise and stress reduce adrenaline andother hormones yet exercise has a beneficial effect

    on heart functioning whereas stress may producelesions in heart tissue. In exercise adrenalinemetabolises differently and is released infrequentlyand gradually under conditions for which it was

    intended (e.g. jogging). In conditions of stressadrenaline is discharged in a chronic and enhancedmanner.

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    ietary habits The MRFIT study (Stamler et al. 1986), was a

    longitudinal study over six years of three hundred

    and fifty thousand adults. A linear relationship wasfound between blood cholesterol level and the

    incidence of coronary heart disease (CHD) or

    stroke. The risk for individuals within the top third

    of cholesterol levels was three and a half times

    greater than those in the lowest third.

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    ietary habits A 24 year longitudinal study of American

    men working for western electricity found

    that men who consumed high levels ofcholesterol were twice as likely to developlung cancer compared with men whoconsumed low levels of cholesterol. Much ofthe cholesterol came from eggs (Shekelle etal, 1991).

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    ietary habits High fibre diets protect men and women

    from cancer of the colon and the rectum.

    Fibre from fruits and vegetables offer moreprotection against colon cancer than thatfrom cereals and other grains. Fruitconsumption offers protection against lungcancer and we should be eating fruit 3 to 7times per week (Fraser et al, 1991).

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    Obesity and eating disorders

    More than a quarter of children in Englishsecondary schools are clinically obese,

    almost double the proportion a decadeago, and an official survey released in

    April 2006 also showed that girls weresuffering more than boys from a crispand chocolate-fuelled life of too mucheating and too little exercise.

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    Obesity and eating disorders

    Researchers measured the height andweight of 11-15 year olds, and found

    26.7% of girls and 24.2% of boysqualified as obese - nearly double therate in 1995. Among children aged 2-10,12.8% of girls and 15.9% of boysweighed above the obesity threshold -also well up on 10 years before.

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    Obesity and eating disorders

    The increase in obesity accelerated

    sharply in 2004, especially among girls,

    the survey said. Figures for the 11-15

    age group showed the proportion of

    obese girls grew from 15.4% in 1995 to

    22.1% in 2003. But in 2004 it shot up to26.7%.

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    Obesity and eating disorders

    The survey also found that the obesityrate among adults had risen to 24%, in

    spite of people exercising more andeating more fruit and vegetables.

    However, more men gave up smoking

    than women, and in 2004 there were forthe first time more women smokers(23%) than there were men (22%).

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    Obesity and eating disorders

    Obesity is defined in terms of the percentageand distribution of an individual's body fat.

    Techniques used to assess the body fat rangefrom using computer tomography (e.g.ultrasound waves) to magnetic resonanceimaging (MRI). Obesity may also be defined interms of body mass index (B. M. I.) which iscalculated by dividing a person's weight bytheir height squared using metric units (i.e.kilogrammes and metres squared).

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    Obesity and eating disorders

    Stunkarda (1984) suggested that obesityshould be categorised as either mild (20

    to 40% overweight), moderate (41 to100% overweight) or severe (more than100% overweight). This would suggestthat 24% of American men and 27% of

    American women are at least mildlyobese (Kuczmarski, 1992).

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    Obesity

    There are three different types of theories thatattempt to explain obesity; they are:

    1. Physiologicaltheories suggesting that there are geneticelements.

    2. Metabolic ratetheories proposing that obese peoplehave a lower resting metabolic rate, burn up less calorieswhen resting and therefore require less food. They also

    tend to have more fat cells which are geneticallydetermined.

    3. Behaviouraltheories suggest that obese people tend tobe less physically active and eat more food than required.

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    Eating disorders

    The two main eating disorders are anorexia

    nervosaand bulimia.

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    Anorexia

    Individuals are diagnosed as anorexic only if they weigh atleast 15% less than their minimal normal weight and havestopped menstruating. In extreme cases, anorexics may

    weight less than 50% of their normal weight. Weight lossleads to a number of potentially dangerous side-effects,including emaciation (wasting of the body), susceptibility toinfection and other symptoms of under nourishment.Females are 20 times more likely to develop anorexia thanmales. But horseracing Jockeys, who are usually male, aresusceptible to anorexia. Anorexia particularly affects white,Western, middle to upper class, teenage women.

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    Anorexia

    Another characteristic of anorexia nervosa is that of

    distortion of body image. Anorexics think that they are too

    fat. This was investigated by Garfinkel and Garner (1982).

    Participants used a device that could adjust pictures of

    themselves and others up to 20 per cent above or below their

    actual body size. An anorexic was more likely to adjust the

    picture of herself so that it was larger than the actual size.

    They did not do the same for photographs of other people.

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    Anorexia

    American undergraduates were shown figures oftheir own sex and asked to indicate the figure that

    looked most like their own shape, their ideal figureand the figure they found would be most attractiveto the opposite sex. Men selected very similarfigures for all three body shapes! Women choseideal and attractive body shapes that were muchthinner than the shape that was indicated asrepresenting their current shape. Women tended tochoose thinner body shapes for all three choices(ideal, attractive and current) compared to the men

    (Fallon and Rozin, 1985).

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    Anorexia

    The perfect figure has changed over the

    years. In the 1950s female sex symbols had

    much larger bodies compared with present-

    day female sex symbols.

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    Anorexia

    The hypothalamus is implicated in anorexia.

    The hypothalamus controls both eating and

    hormonal functions (which may also explain

    irregularities in menstruation).

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    Anorexia

    Personality factors and family dynamics could alsoplay a part in anorexia. The anorexic lacks self-

    confidence, needs approval, is conscientious, is aperfectionist and feels the pressure to succeed(Taylor, 1995).

    Parental psychopathology or alcoholism also plays

    a part as does being in an extremely close orinterdependent family with poor skills forcommunicating emotion or dealing with conflict(Rakoff, 1983).

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    Anorexia

    The mother daughter relationship has been

    implicated. Mothers of anorexic daughters tend to

    be dissatisfied with their daughter's appearance andtend to be vulnerable to eating disorders themselves

    (Pike and Rodin, 1991).

    Genetics could explain this result as De Castro

    (2001)has found that identical twins have similar

    eating patterns compared with fraternal twins

    http://www.newscientist.com/news/news.jsp?id=ns99991318http://www.newscientist.com/news/news.jsp?id=ns99991318http://www.newscientist.com/news/news.jsp?id=ns99991318http://www.newscientist.com/news/news.jsp?id=ns99991318
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    Bulimia

    Bulimia is characterised by recurrent episodes ofbinge eating followed by attempts to purge theexcess eating by vomiting or using laxatives. The

    binges occur at least once a day usually in theevening and when alone. Vomiting and the use of

    laxatives disrupts the balance of the electrolytepotassium resulting in dehydration, cardiacarrhythmias and urinary infections.

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    Bulimia

    This disorder mainly affects young women and ismore common than anorexia affecting five to ten%of American women. Bulimia is not confined tomiddle or upper-class females and transcends racial,ethnic and socioeconomic boundaries. Like

    anorexia explanations encompass biological,personality and social factors. Bulimics often sufferfrom other disorders such as alcohol or drug abuse,impulsivity and kleptomania.

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    Bulimia

    It may be triggered by life events such as feelingguilty or feeling depressed. There is a stronger link

    between depression and bulimia compared withdepression and anorexia. The depression seems to

    be linked to a deficit in the neurotransmitter

    substance serotonin. Bulimics may report lackingself-confidence and use food to fulfil their feelingsof longing and emptiness. The binge eating andvomiting is justified in terms of needing to have a

    high calorie intake of food and a desire to stay slim.

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    Bulimia

    Treatment involves medication and cognitivebehavioural therapy. Antidepressants drugs are usedin combination with psychotherapy. Treatment for

    bulimia tends to be more successful becausebulimics recognise that they have a problem

    whereas anorexics don't.

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    Health and Poverty

    It is important to point out that the most

    damaging lifestyles for our health are those

    associated with low incomes. Throughout theWestern world, the most consistent predictor

    of illness and early death is income. People

    who are unemployed, homeless, or on lowincomes have higher rates of all the major

    causes of premature death (Fitzpatrick and

    Dollamore, 1999).

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    Health and Poverty

    The reasons for this are not clear although

    there are two main lines of argument. First, it

    is possible that people with low incomesengage in risky behaviours more frequently,

    so they might smoke more cigarettes and

    drink more alcohol. This argument probablyowes more to negative stereotypes of

    working-class people than it does to any

    systematic research.

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    Health and Poverty

    The second line of argument is that poor

    people are exposed to greater health risks in

    the environment in the form of hazardousjobs and poor living accommodation. Also,

    people on low incomes will probably buy

    cheaper foods which have a higher content offat (regarded as a risk factor for coronary

    heart disease).

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    Health and Poverty

    All this means that psychological

    interventions on behaviour can only have a

    limited effect, since it is economiccircumstances that most affect the health of

    the nation.

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    Health and Poverty

    The effects of poverty are long lasting and

    far-reaching. A remarkable study by Dorling

    et al. (2000) compared late 20th centurydeath rates in London with modern patterns

    of poverty, and also with patterns of poverty

    from the late 19th century.

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    Health and Poverty

    The researchers used information from

    Charles Booths survey of inner London

    carried out in 1896, and matched it tomodern local government records.

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    Health and Poverty

    When they looked at the recent mortality

    (death) rates from diseases that are

    commonly associated with poverty (such asstomach cancer, stroke and lung cancer), they

    found that the measures of deprivation from

    1896 were even more strongly related tothem than the deprivation measures from the

    1990s. They concluded that patterns of

    disease must have their roots in the past.

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    Health and Poverty

    It is remarkable, but true, that geographical

    patterns of social deprivation and disease are

    so strong that a century of change in innerLondon has not disrupted them.

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    Health and Poverty

    Another study by Dorling et al. (2001)

    plotted the mortality ratio (rate of deaths

    compared to the national average) againstvoting patterns in the 1997 general election.

    They divided the constituencies into ten

    categories, ranging from those who had thehighest Labour vote to those who had the

    lowest.

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    Health and Poverty

    The analysis found that the constituencies

    with the highest Labour vote (72 per cent on

    average) had the highest mortality ratio(127), and that this ratio decreased in line

    with the proportion of people voting Labour,

    down to the lower Labour vote (22 per centon average) where there was a much lower

    mortality ratio (84).

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    Health and Poverty

    This means that early death, and presumably

    poor health, was more common in areas that

    chose to vote Labour. If we take Labourvoting as still being influenced by class and

    social status then this study gives us another

    measure of the effects of wealth on health.

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    Health and Poverty

    The influence of poverty shows up in a

    number of ways. Glaucoma is a damaging

    eye disease that can cause blindness ifuntreated. A study by Fraser et al. (2001)

    looked at the differences between people

    who sought medical help early (earlypresenters) and those who sought help for the

    first time when the disease was already quite

    advanced (late presenters).

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    Health and Poverty

    The late presenters were more likely to be in

    lower occupational classes, more likely to

    have left full-time education at age 14 oryounger, more likely to be tenants than

    owner occupiers, and less likely to have

    access to a car.

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    Health and Poverty

    It showed that a persons personal

    circumstances and the area they lived in had

    an effect on their decision to seek help withtheir vision. It also appeared that the disease

    developed more quickly in people with low

    incomes.

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    Health and Poverty

    One uncomfortable explanation of the

    differences in mortality rates for rich and

    poor might be that the poor receive worsetreatment from the NHS. Affluent women

    have a higher incidence of breast cancer than

    women who are socially deprived, but theyhave a better chance of survival.

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    Health and Poverty

    A study to investigate the care of the breast

    cancer patients from the most and least well-

    off areas in Glasgow was carried out byMacleod et al. (2000). They looked at

    records from hospital and general practice to

    evaluate the treatment that was given, thedelay between consultation and treatment,

    and the type and frequency of follow-up care.

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    Health and Poverty

    The data showed that women from the

    affluent areas did not receive better care from

    the NHS. The women from the deprivedareas received similar treatment, were

    admitted to hospital more often for other

    conditions than the cancer, and had moreconsultations after the treatment than the

    women from the affluent areas.

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    Health and Poverty

    Perhaps the reasons for the worse survival

    rate of women from deprived areas are not

    related to the quality of care, but to thenumber and severity of other diseases that

    they have alongside the cancer.

    THE TYPE A BEHAVIOUR

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    THE TYPE A BEHAVIOURPATTERN

    Do some lifestyles make people more vulnerable to

    disease? Are we justified, for example, in

    associating high stress behaviour with certain healthproblems such as heart disease? Friedman and

    Rosenman (1959) investigated this and created a

    description of behaviour patterns that has generated

    a large amount of research and also become part ofthe general discussions on health in popular

    magazines.

    THE TYPE A BEHAVIOUR

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    THE TYPE A BEHAVIOURPATTERN

    Before we look at the work of Friedman and

    Rosenman, it is worth making a

    psychological distinction between behaviourpatterns and personality. Textbooks and

    articles often refer to the Type A personality,

    though, at least in the original paper, theauthors describe it as a behaviour pattern

    rather than a personality type.

    THE TYPE A BEHAVIOUR

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    THE TYPE A BEHAVIOURPATTERN

    The difference between these two is that a

    personality type is what you are, whereas a

    behaviour pattern is what you do. The importanceof this distinction comes in our analysis of why we

    behave in a particular way (I was made this way

    or I learnt to be this way), and what can be done

    about it. It is easier to change a persons pattern oflearnt behaviour than it is to change their nature.

    THE TYPE A BEHAVIOUR

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    THE TYPE A BEHAVIOURPATTERN

    Friedman and Rosenman devised a

    description of Pattern A behaviour that they

    expected to be associated with high levels ofblood cholesterol and hence coronary heart

    disease. This description was based on their

    previous research and their clinicalexperience with patients.

    THE TYPE A BEHAVIOUR

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    THE TYPE A BEHAVIOURPATTERN

    A summary of Pattern A behaviour is given

    below:

    (1) an intense, sustained drive to achieve

    personal (and often poorly defined) goals

    (2) a profound tendency and eagerness to

    compete in all situations (3) a persistent desire for recognition and

    advancement

    THE TYPE A BEHAVIOUR

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    THE TYPE A BEHAVIOURPATTERN

    (4) continuous involvement in several activities

    at the same time that are constantly subject to

    deadlines (5) an habitual tendency to rush to finish

    activities

    (6) extraordinary mental and physical alertness.

    THE TYPE A BEHAVIOUR

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    THE TYPE A BEHAVIOURPATTERN

    Pattern B behaviour, on the other hand, is the

    opposite of Pattern A, characterised by the

    relative absence of drive, ambition, urgency,desire to compete, or involvement in

    deadlines.

    Research into type A

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    Research into type Abehaviour

    The classic study of Type A and Type B

    behaviour patterns was a twelve-year

    longitudinal study of over 3,500 healthymiddle-aged men reported by Friedman and

    Rosenman in 1974. They found that,

    compared to people with the Type Bbehaviour pattern, people with the Type A

    behaviour pattern were twice as likely to

    develop coronary heart disease

    Research into type A

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    Research into type Abehaviour

    Other researchers found that differences in

    the kinds of Type A behaviour correlated

    with different kinds of heart disease: anginasufferers tended to be impatient and

    intolerant with others, while those with heart

    failure tended to be hurried and rushed,inflicting the pressures on themselves.

    Research into type A

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    Research into type Abehaviour

    Recent reviews of Type A behaviour suggest

    that it is not a useful measure for predicting

    whether someone will have a heart attack ornot. Myrtek (2001), for example, looked at a

    wide range of studies on this issue and

    concluded that measures of Type A and ofhostility were so weakly associated with

    coronary heart disease as to make them no

    use for prevention or prediction

    Research into type A

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    Research into type Abehaviour

    The lasting appeal of the Type A behaviour

    pattern is its simplicity and plausibility.

    Unfortunately, health is rarely that simpleand the interaction of stress with

    physiological, psychological, social and

    cultural factors cannot be reduced to twosimple behaviour patterns.

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    RELIGIOSITY AND

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    RELIGIOSITY ANDHEALTH

    It was not a very diverse sample, as they

    were mostly selected from white middle-

    class families, but this apparent weakness isa strength if we want to look at the effect of

    selected variables that do not include

    ethnicity and class.

    RELIGIOSITY AND

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    RELIGIOSITY ANDHEALTH

    Data was collected over the years and in

    1950 (when the participants were aged about

    40) they were asked about their religiosity ona four-point scale (not at all: little: moderate:

    strong). Forty years later the researchers

    were able to compare this data against themortality of the sample.

    RELIGIOSITY AND

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    RELIGIOSITY ANDHEALTH

    To cut to the chase, once the researchers had

    accounted for all the other variables they

    were able to say that people who were morereligious lived longer (Clark et al. 1999).

    Th d

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    The end