The most characteristic feature of obesity is the increase in adipose tissue. On the contrary, in anorexia nervosa, there is a decrease in adipose tissue enough to impair neuroendocrine functions. Adipose tissue is formed by loosely binding lipid-filled cells called adipocytes and is now considered an important part of energy metabolism. Adipokines it secretes play a role in many physiological processes of the body such as nutrition, appetite, energy balance, insulin, and glucose metabolism, lipid metabolism, regulation of blood pressure, vascular remodeling, coagulation, and inflammation.~Therefore, changes in the amount of body fat in these two patient groups, which are at the two ends of the spectrum, affect both the biochemical parameters and physiological functions of the patients in different ways. It is expected that both adipokine levels and biochemical parameters will approach the values of healthy subjects with a decrease in adipose tissue of clinically morbidly obese patients and an increase in adipose tissue of patients with AN. However, in some studies comparing the parameters of patients with constitutionally weak patients and patients with AN, results contrary to expectations were obtained. In this study, we compared the extent to which weight changes changed adipokines and correlated with biochemical parameters based on healthy and normal-weight volunteers.
In this study, when patients diagnosed with AN started treatment and their weight increased by 10%; On the other hand, it was aimed to compare the changes in serum adipokine levels observed in morbidly obese patients before bariatric surgery and when they lost 10% of their post-op weight with both anthropometric measurements, biochemical parameters, and values of healthy volunteers.