Abstract Researchers at the National Cancer Institute developed a new cognitively based
food frequency questionnaire (FFQ), the Diet History Questionnaire (DHQ). The Eating at …

Background: Many constituents of fruits and vegetables may reduce the risk for coronary
heart disease, but data on the relationship between fruit and vegetable consumption and …

Background: Although the effects of individual foods or nutrients on the development of
diseases and their risk factors have been investigated in many studies, little attention has …

Background: The long-term relations between specific types of dietary fat and risk of type 2
diabetes remain unclear. Objective: Our objective was to examine the relations between …

Background Television (TV) watching, a major sedentary behavior in the United States, has
been associated with obesity. We hypothesized that prolonged TV watching may increase …

Results of case‐control studies and of a prospective investigation in men suggest that
consumption of coffee could protect against the risk of Parkinson's disease, but the active …

Background The evidence that high salt intake increases the risk of cardiovascular disease
has been challenged. We aimed to find out whether salt intake, measured by 24 h urinary …

Background: Established determinants of fasting total homocysteine (tHcy) concentration
include folate and vitamin B-12 status, serum creatinine concentration, and renal function …

Background: The relation between intakes of total fat and specific types of fat and age-
related macular degeneration (AMD) remains unclear. Objective: Our objective was to …

This report describes the development and validation/calibration of a structured food
frequency questionnaire for use in a large-scale cohort study of diet and health in Chinese …