If you’ve ever tried and lost weight, you probably know how difficult it is to keep the pounds off. A small study conducted by researchers at the Norwegian University of Science and Technology may help explain why this is so: People who lose weight may feel hungry for the rest of their lives.
This study involved 34 people with severe obesity – a body mass index (BMI) greater than 40 or more than 100 pounds over their idea weight – who participated in a two-year weight loss program involving diet and exercise. The study participants lost and successfully kept off an average of about 24 pounds during the study period. However, levels of the hunger hormone ghrelin increased and feelings of hunger didn’t diminish, according to the researchers.
These findings suggest obesity is a chronic disease and suggest it’s a lifelong struggle for many. Results of the study were published in the American Journal of Physiology-Endocrinology and Metabolism.