data from national health and nutrition examination survey (nhanes)

8
70 72 74 76 78 80 82 1970 1975 1980 1985 1990 1995 2000 2005 Year A verage B ody W eight(kg) Data from National Health and Nutrition Examination Survey (NHANES) Avg Body Weight US Obesity Epidemic

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US Obesity Epidemic. Avg Body Weight. Data from National Health and Nutrition Examination Survey (NHANES). Modeling weight gain. Food Intake. Energy expenditure. Energy storage. ∆Storage = Intake - Expenditure. (Simplified) Body weight model. RC circuit. Leaky bucket (sort of). - PowerPoint PPT Presentation

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Page 1: Data from National Health and Nutrition Examination Survey (NHANES)

70

72

74

76

78

80

82

1970 1975 1980 1985 1990 1995 2000 2005

Year

Ave

rag

e B

od

y W

eig

ht (

kg)

Data from National Health and Nutrition Examination Survey (NHANES)

Avg Body Weight

US Obesity Epidemic

Page 2: Data from National Health and Nutrition Examination Survey (NHANES)

∆Storage = Intake - Expenditure

Modeling weight gain

Energy storage

Food Intake

Energy expenditure

Page 3: Data from National Health and Nutrition Examination Survey (NHANES)

(Simplified) Body weight model

RC circuit Leaky bucket (sort of)

Page 4: Data from National Health and Nutrition Examination Survey (NHANES)

1900

2400

2900

3400

3900

1970 1975 1980 1985 1990 1995 2000 2005 2010

Year

Pe

r C

ap

ita F

oo

d E

ne

rgy

(kca

l/d)

Predict Food Supply

Food Intake (model)

FAO Food Supply

KD Hall, J Guo, M Dore, CC Chow. PLoS ONE (2009)

USDA Loss Adjusted Food Availability

Page 5: Data from National Health and Nutrition Examination Survey (NHANES)

70

75

80

85

90

95

100

1970 1975 1980 1985 1990 1995 2000 2005 2010

Year

Ave

rag

e B

od

y W

eig

ht (

kg)

Food supply more than explains obesity epidemic

Simulated Body Weight

NHANES Body Weight

Page 6: Data from National Health and Nutrition Examination Survey (NHANES)

http://bwsimulator.niddk.nih.gov

iOS app is in the works

Page 7: Data from National Health and Nutrition Examination Survey (NHANES)

Practical Guide to the Identification, Evaluation, and Treatment of Overweight and Obesity in Adults. NHLBI Obesity Education Initiative (2000).

3500 kcal per pound

Weight Loss Rule of Thumb

The New Rule

10 Calories/day will produce a 1 pound loss in three years

Page 8: Data from National Health and Nutrition Examination Survey (NHANES)

Acknowledgments

Heather Bain, Michael Dore, Juen Guo, Gary Sacks, Boyd Swinburn, Vipul Periwal, Kevin Hall

References and slides at sciencehouse.wordpress.com