A new Serbian study, that focussed on severely obese men, found that obstructive sleep apnea is linked to low levels of free and total testosterone.

The study by Gajic et al was published in the journal, Frontiers in Endocrinology.

Sleep apnea is a potentially serious condition, in which breathing stops and starts during sleep. Often snoring and not feeling rested after a full night's sleep are seen as possible symptoms of sleep apnea.

While there is the obvious question of correlation or causation that can be raised about the study, separately it is known that low testosterone leads to sleep issues. Specifically, greater difficulty falling asleep and a greater need for sleep to function properly are aspects that the clinically validated Ageing Male Symptoms (AMS) questionnaire that is used to evaluate the impact of ageing on men.

Testosterone peaks in early adulthood, and declines consistently thereafter. While some men may not feel any changes due to lower levels of testosterone, many do feel greater irritability, greater stress and anxiety, loss of strength, decline in sexual function, and indeed sleep challenges.

You can take the Ageing Male Symptoms (AMS) self-assessment right here, and also index your experience of ageing to that of other men who have taken it.