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|Title:||Low-carbohydrate diets and all-cause and cause-specific mortality: Two cohort studies||Authors:||Fung, T.T.
Van Dam, R.M.
|Issue Date:||7-Sep-2010||Citation:||Fung, T.T.,Van Dam, R.M.,Hankinson, S.E.,Stampfer, M.,Willett, W.C.,Hu, F.B. (2010-09-07). Low-carbohydrate diets and all-cause and cause-specific mortality: Two cohort studies. Annals of Internal Medicine 153 (5) : 289-298. ScholarBank@NUS Repository.||Abstract:||Background: Data on the long-term association between low-carbohydrate diets and mortality are sparse. Objective: To examine the association of low-carbohydrate diets with mortality during 26 years of follow-up in women and 20 years in men. Design: Prospective cohort study of women and men who were followed from 1980 (women) or 1986 (men) until 2006. Low-carbohydrate diets, either animal-based (emphasizing animal sources of fat and protein) or vegetable-based (emphasizing vegetable sources of fat and protein), were computed from several validated food-frequency questionnaires assessed during follow-up. Setting: Nurses' Health Study and Health Professionals' Follow-up Study. Participants: 85 168 women (aged 34 to 59 years at baseline) and 44 548 men (aged 40 to 75 years at baseline) without heart disease, cancer, or diabetes. Measurements: Investigators documented 12 555 deaths (2458 cardiovascular-related and 5780 cancer-related) in women and 8678 deaths (2746 cardiovascular-related and 2960 cancer-related) in men. Results: The overall low-carbohydrate score was associated with a modest increase in overall mortality in a pooled analysis (hazard ratio [HR] comparing extreme deciles, 1.12 [95% CI, 1.01 to 1.24]; P for trend = 0.136). The animal low-carbohydrate score was associated with higher all-cause mortality (pooled HR comparing extreme deciles, 1.23 [CI, 1.11 to 1.37]; P for trend = 0.051), cardiovascular mortality (corresponding HR, 1.14 [CI, 1.01 to 1.29]; P for trend = 0.029), and cancer mortality (corresponding HR, 1.28 [CI, 1.02 to 1.60]; P for trend = 0.089). In contrast, a higher vegetable low-carbohydrate score was associated with lower allcause mortality (HR, 0.80 [CI, 0.75 to 0.85]; P for trend ≤ 0.001) and cardiovascular mortality (HR, 0.77 [CI, 0.68 to 0.87]; P for trend < 0.001). Limitations: Diet and lifestyle characteristics were assessed with some degree of error. Sensitivity analyses indicated that results were probably not substantively affected by residual confounding or an unmeasured confounder. Participants were not a representative sample of the U.S. population. Conclusion: A low-carbohydrate diet based on animal sources was associated with higher all-cause mortality in both men and women, whereas a vegetable-based low-carbohydrate diet was associated with lower all-cause and cardiovascular disease mortality rates. Primary Funding Source: National Institutes of Health. © 2010 American College of Physicians.||Source Title:||Annals of Internal Medicine||URI:||http://scholarbank.nus.edu.sg/handle/10635/109447||ISSN:||00034819|
|Appears in Collections:||Staff Publications|
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