If population-wide improvements in nutrition and physical activity behavior are to be made, behavior change interventions must use a variety of media. This study examines whether participation in a facilitator-based video version of the Coronary Health Improvement Project could significantly reduce coronary risk. A total of 28 video classes conducted in worksite, medical and community settings were used to teach 763 middle-aged adults, ages 30-79 years, about healthy lifestyles. Four to 8 weeks after baseline, follow-up measures were taken. Demographic and biometric data [body weight, body mass index (BMI), blood lipids, blood pressure and fasting blood glucose] were gathered. The class participants were evaluated in aggregate and showed significant improvements in body weight, BMI, resting heart rate, total cholesterol, low-density lipoprotein, triglycerides and fasting blood glucose. Males demonstrated greater improvement than females, and individuals with higher baseline health risks experienced the greatest reductions in risk. This video lifestyle change program appears to help participants make important lifestyle changes. For individuals empowered to make better choices regarding diet and exercise, significant improvements occurred in most coronary risk factors in as little as 4-6 weeks.