Electrophoresis : albumine 49 (normal 56-66%). Gamma 24 (normal 11-19). Ves 24 (normal < 15), CRP 5 (normal 0-0, 5). Is it all fault of obesity?

Probably more. This low an Albumin with what I will assume at your age is a polyclonal gammopathy makes me concerned about serious systemic disease or severe liver disease. Your obesity may have given you non-alcoholic steatohepatitis or you may have something else badly wrong. If your personal physician is not able to diagnose / explain, please ask for a consultation.