1. Introduction
obesity, Obesity, weight loss, bodyweight loss
OBESITY, OBESE, OBESITY
Although bariatric surgery is known to change the metabolome, it is unclear if this is specific for the intervention or a consequence of the induced bodyweight loss. As the weight loss after Roux-en-Y Gastric Bypass (RYGB) can hardly be mimicked with an evenly effective diet in The prevalence of obesity has nearly tripled in the last 40 years and continues to increase in many parts of the world [Obesity correlates with an alteration in the small molecules in the fluids and tissues of the body [To identify metabolomic changes induced by RYGB, serum samples of morbidly obese patients treated with bariatric surgery (OP) or psychotherapy-enhanced lifestyle intervention (LS) from the randomized controlled Würzburg Adipositas Study (WAS) were analyzed as well as samples of 