Any disagreement between the two reviewers(XB Zhang and B Chen) were resolved by discussing with a third reviewer(XT Jiang). The reference lists of the included studies were also hand-searched. Some investigations indicated that testosterone administration, however, aggravates the severity of OSA , . Testosterone is one of sexual hormones and terminal part of hypothalamic-pituitary-gonadal axis. The characteristics of OSA are intermittent hypoxia and sleep fragmentation. Two reviewers independently searched PubMed, Cochrane library, Embase and Web of Science before June 2014. Forest plots of meta-analysis for change in SHBG. The 2023 TRAVERSE trial in high‑risk men found testosterone was non‑inferior to placebo for major cardiac events over follow‑up, though there were slightly higher rates of atrial fibrillation, pulmonary embolism, and acute kidney injury. Intranasal testosterone (3 times daily) avoids transfer risk and allows quick on/off. Long-acting testosterone undecanoate (administered in clinic) offers stable levels with less frequent dosing but requires monitoring for rare reactions. Fixing these can improve or even normalize testosterone, and will make any therapy work better. This guide breaks down exactly when therapy helps, how it’s diagnosed, the safest treatments, and how to monitor results with confidence. Although the effects of OSA treatment on testosterone levels remain unclear, OSA treatment may help improve sexual function, especially in men with severe OSA. In a cohort study of men aged ≥65 years, those with low testosterone levels experienced decreased sleep efficiency, increased frequency of nighttime awakenings, and reduced deep sleep time . Most guidelines recommend treatment if morning total testosterone is clearly low on two separate days (often Testing should be done in the morning (before 10 a.m.) when levels peak, and repeated on a separate day. In this section, you’ll find targeted answers to common inquiries about the interplay between sleep apnea and testosterone levels. Effective management of obstructive sleep apnea (OSA) and its potential impact on testosterone levels involves a combination of lifestyle changes and medical interventions. The administration of testosterone therapy should be monitored closely in men who suffer from sleep apnea due to potential risks of worsening sleep-related breathing disorders. According to some authors, sleep fragmentation and/or intermittent hypoxia occurring in untreated OSA syndrome may influence the HPT axis, reducing Gonadotropin Releasing Hormone (GnRH) secretion, LH pulsatility, and serum total testosterone (12, 13). The weighted-mean serum total testosterone at baseline was 13.5 ± 7.4 nmol/l, and it was different between the two groups (6.8 ± 3.5 nmol/l in hypogonadal and 15.7 ± 7.0 nmol/l in eugonadal patients). Participants were adult outpatients diagnosed with OSA syndrome; five trials enrolled patients with serum total testosterone 2. In order to assess differences between eugonadal and hypogonadal subjects, a subgroup analysis was planned with a cutoff for serum total testosterone of 12 nmol/l. If low-T is the culprit behind your sleep issues, our team can make that diagnosis and restore your testosterone levels and production. Low testosterone can cause a lot of problems in life like low sex drive, erectile dysfunction, and fatigue. In such cases, CPAP therapy, along with weight loss and addressing other metabolic problems, will contribute to the restoration of gonadal function. Functional hypogonadism is an endocrine condition in which the secretion of testosterone by the testes is reduced. Consequently, CPAP offers the prospect of restoring hormonal balance along with solving the problem of sleep disorder. And research suggests sleep apnea is linked to dysfunction of the pituitary-gonadal axis, which is responsible for regulating and releasing sex hormones. The link between sleep apnea and low testosterone may go both ways. However, the link between testosterone and sleep apnea in this research was largely explained by obesity. Total testosterone levels fall by about 1.6% per year, whilst free and bioavailable testosterone levels fall by 2% to 3% per year. High-dose testosterone injections have been shown to cause more disrupted breathing and an increased duration of low blood oxygen levels. However, this may just be the case in those with severe sleep apnea. You can learn more about the connection between sleep apnea and weight gain here. It can be hard to lose weight when you have the sleep disorder, however, as sleep apnea causes weight gain. Getting more sleep each night can be hard to do at the best of times, but it’s especially difficult when sleep apnea is causing you to wake up during the night. As mentioned above, previous studies have confirmed the efficacy of CPAP on endocrinal disordering and sexual dysfunction in OSA patients , , , however, whether serum testosterone can be normalized or not by CPAP in OSA patients is controversial. Firstly, Most of the included studies were before and after treatment study, only two RCTs, pre-and post-treatment data rather than treatment and control groups data were drawn. To evaluate the efficacy of continuous positive airway pressure (CPAP) on serum testosterone in men with obstructive sleep apnea (OSA). In addition to lower serum testosterone, patients with severe OSA also have higher levels of general fatigue, physical fatigue and mental fatigue, and reduced physical activity. A mouse study showed that loss of testosterone after gonadectomy results in a significant decrease in the amount of deep sleep, which can be treated by testosterone replacement therapy (TRT) . While the quantity and quality of sleep lead to reduced testosterone levels, there is also evidence to suggest the reverse. If you’re overweight or obese, losing weight may have the win-win effect of improving your sleep apnea and your testosterone levels are the same time. If you’ve got low testosterone and sleep apnea and can’t get testosterone replacement therapy — or want to avoid it — there are still things you can do to increase your natural production of the hormone. And, as we explained above, side effects of testosterone replacement therapy, may include worsening sleep apnea or developing the sleep disorder. One study found there's a high prevalence of sleep apnea in obese women with PCOS, which is characterized by having increased androgen (male hormone) levels.