BACKGROUND Diabetes Mellitus is not a disease, but can be considered as a metabolic syndrome in which not only the sugar metabolism is impaired, but also is said to have profound effects or influence on other metabolic disorders. Almost, all the metabolic pathways will be affected in this dreadful disease. It's a slow poison, which starts showing its effects as the time progresses. One of the commonest complaint seen in the diabetes patients is the loss of libido or derangement in the sexual physiology. The most common complaints include the erectile dysfunction and mood elevations. The patients also complain of stressfulness. These symptoms point out towards a common source i.e. decrease in the testosterone levels. A sincere effort has been put in this study to understand the relations of total serum testosterone seen in diabetes mellitus patients. This may help the physicians, operating surgeons, and also anaesthetists to understand the plethora of metabolic disturbances seen in the diabetes mellitus and take necessary steps to correct such conditions and also take necessary preventive members that may result in catastrophe. METHODS This study is a cross-sectional study done in Government Medical College, Nizamabad. One hundred known diabetic patients who attended the Department of Surgery, Government Medical College, Nizamabad, were identified. The fasting levels of postprandial level and HbA1c were detected. The total testosterone level was identified. The incidence of low testosterone (<300 ng/dL) was checked. The different levels of glucose (Fasting, postprandial) and HbA1c was compared to the amount of serum total testosterone. Finally, the time since the diabetes was known to the patients were correlated to the levels of testosterone. RESULT In the present study, the incidence of the low total testosterone was found to be in 39 percent of the diabetics. In the present study, there is a positive correlation between the total testosterone levels and the number of years that have passed since the patient is known to be diabetic. In the present study, there was a positive correlation found between the serum total testosterone levels with the mean fasting glucose levels, mean postprandial, and mean HbA1c levels. CONCLUSION This study is intended to help the surgeons, physicians, and the anaesthetists in managing the patients with diabetes mellitus in a better way. Especially, pre and postsurgical patients in whom the stress levels are enormous. The testosterone also plays a role in controlling the stress. The testosterone supplementation therapy can be considered in these patients. The study has a lot of scope in the future. A gene has been identified to cause both obesity and diabetes and also lower the serum testosterone. So, the present study forms a base for further studies at a molecular level in understanding the disease better and also managing the patients better.