Effect of a non-dieting lifestyle randomised control trial on psychological well-being and weight management in morbidly obese pre-menopausal women

Highlights • This is one of the few lifestyle intervention studies with morbidly obese individuals. • We showed that our intervention based on Health at Every Size and self-determination theory resulted in weight loss following the 3 month intervention period as well improved well-being and psychological functioning. • In addition, at one year follow-up participants from the initial intervention group and delayed start intervention group showed large improvements in their well-being and psychological functioning whilst maintaining their body weight.