Calcium Supplementation for a Healthy Weight-Lite (CaSHeW Lite)

Recent studies suggest that calcium may be important for weight loss, but other studies have not had the same results. The purpose of the study is to find out if taking calcium and vitamin D supplements, while following a low-calorie diet, can help people lose weight. We will use special orange juice with less calories than regular orange juice. Half of the subjects in this study will drink the study juice (reduced-calorie orange juice) containing extra calcium and vitamin D. The other subjects will drink reduced-calorie orange juice without any extra calcium or vitamin D in it. Comparisons: We will compare subjects who follow the diet and take calcium and vitamin D supplements to those who only follow the diet.