Background Current estimates from objective accelerometer data suggest that American
adults are sedentary for∼ 7.7 h/day. Historically, sedentary behaviour was conceptualized …

A blend of many factors, ranging from bioloiical to anthropologic, interact in complex and
changing ways to influence the development and maintenance of food choices …

What type, amount, and intensity of physical activity is good for your health? How much
exercise is too much? Can avoiding physical activity make you ill or lead to premature …

Measuring food waste at the individual household level has been nearly impossible
because comprehensive, current data on uneaten food do not exist. By using food …

OBJECTIVES: This study examined the associations between physical activity and other
health behaviors in a representative sample of US adolescents. METHODS: In the 1990 …

Introduction: Physical activity and a healthy diet have been recommended to help reverse
the increasing prevalence of overweight among adolescents and adults in the United States …

Several studies have shown socioeconomic differences in leisure-time physical activity. One
explanation may be socioeconomic differences in relevant psychosocial conditions. The …

Background Studies on the impact of the'obesogenic'environment have often used non-
theoretical approaches. In this journal's debate and in other papers authors have argued the …

Background Physical activity may be associated with reduced risk of colorectal cancer. The
main aim of this paper is to review the available evidence for a link between exercise and …

Breast cancer: cause and prevention Page 1 883 Breast cancer: cause and prevention
Introduction Breast cancer is the second most common cancer among women in the world; in …