Study of Five Different Methods Of Delivering A Lifestyle Modification Program for Weight Loss

Inclusion Criteria: * 1- Body mass index -calculated as weight in kilograms divided by the square of height in meters- ≥30 and \<40 kg/m2. * 2- Eligibility to be prescribed sibutramine, following the eligibility requirements listed in the US Package Insert * 3- Willingness and ability to comply with study related procedures * 4- Access to Internet and email Exclusion Criteria: * Uncontrolled blood pressure (defined as ≥140/90 mmHg), diabetes, coronary heart disease, chronic congestive heart failure, stroke, significant metabolic, hepatic or renal disease, current malignancy, gastric bypass surgery or had a weight loss ≥10%, participated in a structured weight loss program, or had taken weight loss agents during the past 6 months. Women were excluded if pregnant or breastfeeding; women of childbearing potential had to use adequate contraception.