Several studies have shown high levels of hypogonadism (HG) in men with T2DM with around 20% being overtly hypogonadal with total testosterone (TT) below 8 nmol/L and around 50% falling below the 12 nmol/L level for mild HG . Given that low testosterone levels predict type 2 diabetes mellitus (T2DM) in men, we sought to dissect the relationship between testosterone and insulin sensitivity in men. To diagnose low testosterone, doctors typically perform a blood test to measure testosterone levels, usually in the morning when levels are highest. Yes, men with diabetes, especially type 2, are more likely to experience low testosterone levels. Diabetes, particularly type 2 diabetes, can lower testosterone levels in men. All patients were overweight/obese (mean BMI 29.9 ± 2.4 kg/m2). The study was conducted in accordance with the Declaration of Helsinki and approved by the Ethics Committee ASL Roma 2, study n. During v5 (week 13, end of study) the CGM was disassembled, and the recorded data were finally downloaded. By definition, Grade A evidence is evidence about which the Panel has a high level of certainty, Grade B evidence is evidence about which the Panel has a moderate level of certainty, and Grade C evidence is evidence about which the Panel has a low level of certainty. The categorization of evidence strength is conceptually distinct from the quality of individual studies. Evidence tables (for included studies) and evidence profiles (showing estimates of effect for the outcomes of interest) were generated and presented to the Panel. Randomized controlled trials (RCTs) were sought for effectiveness questions, whereas both randomized and non-randomized studies were sought for adverse events and questions of association and risk factors. To be scientifically accurate, the Panel chose the term testosterone deficiency. Clinicians may use aromatase inhibitors, human chorionic gonadotropin, selective estrogen receptor modulators, or a combination thereof in men with testosterone deficiency desiring to maintain fertility. Another study showed that men with diabetes often have lower testosterone levels compared to men without diabetes. One large study found that men with low testosterone were more likely to develop diabetes than men with normal testosterone levels. We’ll explore the benefits and risks of this treatment and what the research says about its effects on blood sugar levels and diabetes management. More frequent blood glucose monitoring or CGM is suggested for patients with T2D and high testosterone levels. Another study investigating the effects of testosterone treatment of men with osteoporosis found also a beneficial effect on blood pressure levels. Small-scale studies of testosterone treatment in men with metabolic syndrome or T2DM and marginal low or normal testosterone levels showed improvement in glycemic control. When body of evidence strength Grade B is used, benefits and risks/burdens appear balanced, the best action also depends on individual patient circumstances, and better evidence could change confidence. When body of evidence strength is Grade A, the statement indicates that benefits and risks/burdens appear balanced, the best action depends on patient circumstances, and future research is unlikely to change confidence. Of the outcomes included in the protocol of this systematic review, data were available on quality of life (QoL), sexual function, cardiovascular events, anemia, bone health, insulin resistance, cardiovascular risk factors, mood, cognitive function, body composition, and numerous adverse events. Testosterone therapy refers to all forms of treatment that are aimed at increasing serum testosterone, including exogenous testosterone as well as alternative strategies, such as selective estrogen receptor modulators (SERMs), human chorionic gonadotropin (hCG) or aromatase inhibitors (AIs). The Panel explicitly uses the term testosterone therapy rather than testosterone replacement therapy or testosterone supplementation to be in keeping with the beliefs of the current thought leaders in the field. Thus, a patient is considered testosterone deficient and a candidate for testosterone therapy only when he meets both criteria.