My father who was perfectly healthy till last month lost 6 Kg in 20 days and then had fever , constipation and dark stools. The doctor recommended complete blood profile and the blood test came out normal. Even ECG is normal. He is mildly diabetic and
sugar too showed under control. Hence doctor suspected stomach infection and fatigue due to exposure to sunlight and 40 degree temperature as the reason. Though the fever went away after that. He has some weakness. Is there any reason to worry for the weight loss? Kindly advise