Current Projects

Interaction of dietary antioxidants and oxidative stress in the development and progression of age-related lens opacification and macular degeneration.
Impact of food folate fortification on folate status and total circulating homocysteine concentrations in adult Americans.
Influence of whole grain consumption on metabolic markers of disease risk and incidence of diabetes.
Role of body composition and estrogens in sex- and age-related differences in circulating homocysteine concentrations.
Nutrient determinants of elevated homocysteine concentrations after a methionine load; efficacy of vitamin B6 supplementation in reducing the homocysteine response to a methionine load.
Relationship between B vitamins, elevated homocysteine concentrations and age-related cognitive decline and dementia.
Development of food composition tables for dietary flavonoids for the purpose of studying the link between flavonoids and diet-related disease risk.
Obesity-associated morbidity, including vascular disease, hypertension, and diabetes, in established cohorts.
Use of community-based dietary services by the elderly and its relationship to institutionalization deferral.

For more information about the Nutritional Epidemiology Laboratory, please visit the USDA, Agricultural Research Service.

Mixed Reviews
Some nutrients may prevent cataracts – or not

Preventive foods
Whole grains protect elderly against cardiovascular disease

Soda at Your Peril
Sugary drinks, but not fruit juice, may be linked to insulin resistance

Preventing diabetes
Let them eat whole-grain bread

Whole grains for longer life
It's never too late to lower disease risks

Study Identifies Trends of Vitamin B6 status in US Population Sample