As men get older, their testosterone levels naturally start to drop. Further studies are thus needed reporting data on sleep duration, compliance to CPAP, months of use, OSA syndrome improvement, and BMI. Concerning the latter aspect, it is estimated that CPAP is not able to correct all the nocturnal events in about 20% of patients with OSA syndrome; the risk is increased in patients with concomitant obesity hypoventilation syndrome and chronic obstructive pulmonary disease (54). It is worth noting that other treatments, such as diet and bariatric surgery, proved to increase total as well as serum free testosterone and SHBG (40). The primary outcome was the change in serum total testosterone levels from baseline to the last available follow-up. Thus, we performed a systematic review and meta-analysis to evaluate the effects of CPAP on serum testosterone and gonadotropin levels in male patients with OSA syndrome. It helps with many important functions like building muscle, keeping bones strong, producing red blood cells, and supporting a healthy sex drive. Testosterone is a hormone that plays a major role in a man’s health. In all, a limited number of studies specifically focusing on the effect of CPAP in hypogonadal patients was found, and this prevented any additional analysis (e.g., meta-regression) to explore the high heterogeneity of findings. Two studies included such patients, but no information other than a "medical history" evaluation is reported (9, 20). Lastly, it should be considered that pituitary imaging in patients with serum total testosterone 11). Also, CPAP adherence is usually defined as hours per night rather than as a proportion of total sleep time, which is usually not measured. Zinc is an essential mineral for your healthy body function. Both of these may stimulate the body to release more testosterone. Testosterone-boosting supplements are different from testosterone therapy. And lowest around 8 p.m., and sleep facilitates this normal cycle of testosterone production. In both sexes, testosterone affects multiple aspects of health, including sex drive and muscle and bone strength. While the hormone is found in people who are assigned male and female at birth, males have much higher levels. The relationship between sleep disorders and testosterone in men. Decreased pituitary-gonadal secretion in men with obstructive sleep apnea. High cortisol levels over time can damage brain cells and make it harder to think clearly. These mood problems can get worse if sleep apnea is also present. Over time, this can lead to long-term cognitive problems, including a higher risk of dementia. People with untreated sleep apnea may have trouble focusing, remembering things, or making decisions. The risk of heart attacks, irregular heartbeats (arrhythmias), and stroke increases. Low testosterone is diagnosed through blood tests, typically taken in the morning when testosterone levels are highest. Low testosterone refers to a condition in which the body produces lower-than-normal levels of the male hormone testosterone. When both conditions are treated, men can feel better, sleep better, and lower their risk for long-term health problems. Understanding the connection between sleep apnea and low testosterone helps with earlier diagnosis and better treatment. To our knowledge, this is the first systematic review and meta-analysis assessing differences due to CPAP use in eugonadal and hypogonadal patients with OSA syndrome, as well as focusing on gonadotropins. The overall results of our meta-analysis showed that CPAP does not influence total testosterone or gonadotropins. Data were available for 95 patients with hypogonadism and 280 with eugonadism at baseline. Qualitative analysis of studies included in the systematic review. Moreover, 49 patients were treated with sham-CPAP, 21 with mandibular advancement devices, and 12 with CPAP and simultaneous TRT; they were not included in the present review. When sleep is broken or shallow, testosterone levels can drop. Research over the past two decades suggests that sleep apnea may reduce how much testosterone the body makes, especially during the night. At the same time, low testosterone can worsen sleep problems and possibly raise the risk of apnea.