Here’s what was published by the Journal of the American Medical Association:
The two-year randomized controlled trial demonstrated clinically significant weight loss. In a 2010 trial, Jenny Craig program participants lost over three times more weight compared to Usual Care. Participants in our program, on average, lost 10% of their body weight at 12 months and 7% at 24 months compared to an average of 2% for Usual Care with a 92% retention rate.
The study also showed favorable effects on cardiovascular disease risk factors. Weight loss of 5-10% has been shown to reduce risk for cardiovascular disease, hypertension and type 2 diabetes. In the Diabetes Prevention Program trial, a weight loss of 7.8% resulted in a reduction of 58% for type 2 diabetes.1
In the 2010 study of our program’s efficacy, along with a 7-10% weight loss reduction, Jenny Craig participants showed decreases in waist/hip circumference, serum insulin and CRP along with increases in HDL cholesterol and cardiopulmonary fitness. Participants in the Jenny Craig program also saw improvements in quality of life measures and dietary quality via increased serum carotenoids (a biomarker for fruit and vegetable intake).2