Obesity is caused by an imbalance between energy input and energy requirement. There are also genetics predispositions. The weight gain may also be a secondary result of medical conditions (Cushing’s disease and thyroid underactivity). The obesity is also related to inflammations. Managing obesity may help to reduce the risk of cardiovascular diseases and poor outcomes via inhibiting inflammatory processes. There are treatments by medical drugs, which however can have unwanted bad side effects. In references a magnetic therapy of obesity is described, which is safe, easy to apply, and which does not have side effects. In the next section I describe the magnetic therapy, and I explain the physical processes underlying this therapy. Magnetic Therapy of Obesity  is that this disease is related to inflammations which can lead to other bad diseases accompanying the obesity. Inflammations can be cured by oxygen particles.