Weight Watchers Online 2015

Inclusion Criteria:

- Age 18-70 years

- Body mass index (BMI) between 27 and 40 kg/m2

- Both genders will be recruited; At least 10% of participants will be men. Enrollment
of women will be capped at n = 324 (90%) to meet this goal.

- All ethnic groups will be recruited, with a goal of recruiting 10% minorities

- English speaking

- Have access to the Internet via a computer, and basic computer skills

Exclusion Criteria:

- Report health problems that make weight loss or unsupervised exercise unsafe or
unreasonable

- Report a heart condition, chest pain during periods of activity or rest, or loss of
consciousness on the Physical Activity Readiness Questionnaire1

- Are currently pregnant or breastfeeding, or intend to become pregnant in the next 12
months

- Are planning to move outside of the state within the next 12 months

- Report any cognitive or physical limitations that preclude use of a personal computer

- Have participated in a study conducted by the WCDRC or UT in the past 2 years

- Have followed a commercial weight-loss program within the previous 6 months or who
are currently following a commercial weight loss program

- Weight loss of ≥ 5% of initial body weight in the last 6 months

- History of clinically diagnosed eating disorder excluding Binge Eating Disorder.

- Previous surgical procedure for weight loss

- Currently taking weight loss medication

- Treatment of cancer within the last 6 months