currently in a weight loss program, dieting, or taking medications that might affect weight

had participated in a weight loss program in the past year

lost \> 5% of their body weight in the past 6 months

were planning to or had undergone weight loss surgery

had any orthopedic limitations or contraindications to physical activity

were pregnant, lactating, or less than 6 months postpartum, or were planning to become pregnant in the next year

reported uncontrolled hypertension, history of coronary heart disease, stroke, or peripheral arterial disease; reported chronic gastrointestinal disease

endorsed having hepatitis B or C, cirrhosis, or HIV

had a history of cancer within the past 5 years

reported a significant psychiatric illness that might interfere with completion of the study.

Weight Watchers and Families

What this study is about