What dietary advice did participants receive?
Participants were asked to lower fat to less than 25 percent of caloric intake. If reducing fat did not result in weight loss, a calorie goal was added. Participants received culturally sensitive training in diet, exercise, self-monitoring, goal-setting, and problem-solving. Participants took part in a 16-session core-curriculum during the first 24 weeks, then were seen individually or in groups at least every other month, and contacted by mail or phone on the alternate months. They were also invited to attend three group classes on healthy eating, physical activity, or behavioral topics that were offered each year, and to participate in periodic motivational campaigns with clinic competitions and group walking events. Lifestyle intervention more effectively reduced diabetes risk than metformin. Within each arm, did certain groups of DPP participants benefit more from the intervention than other groups? Lifestyle intervention worked in all of the groups, but it worked particularly well
