Sleep problems and menopause

Sleep is a hormonal process, just like the menopausal transition. During perimenopause, your hormones start to fluctuate and then decline. This can affect the quality of your sleep. You may start having trouble falling asleep, feel restless at night, wake up at night and be unable to go back to sleep, or wake up very early in the morning. The relationship between progesterone and the stress hormone cortisol plays an important role in this respect. 

Known as the ‘relaxing hormone’, progesterone has a calming, mildly sedative effect. Like other reproductive hormones, progesterone levels decrease as you age and enter menopause. This can make it more difficult to fall asleep or stay asleep at night. Low progesterone can also affect the airways and cause disrupted breathing (sleep apnoea). Your blood oxygen levels can drop when you stop breathing, causing you to wake up. 

In addition, menopausal women often have low cortisol levels during the day (causing daytime fatigue) and elevated cortisol levels at night (causing difficulty with falling asleep). Cortisol is the enemy of a ‘sleep hormone’ called melatonin. Being under a lot of stress or going through a hectic time interferes with melatonin production. This can cause sleep problems or even insomnia, a condition where you try your best to sleep but are unable to. 

To make matters worse, when hormone levels drop during menopause, the levels of serotonin (the ‘happiness hormone’) also fall, which can trigger mood swings and depressive symptoms. Serotonin is converted into melatonin when it’s dark outside. Lower serotonin levels means less melatonin is produced which causes you not to sleep as well. 

Sleep is important for many aspects of your health. It ensures that hormones and neurotransmitters can function properly, but also that you feel focused, happy and resilient. In fact, you can start to feel the effects of sleep deprivation after not getting enough sleep for just one night. You may feel gloomy or low, or find yourself more irritable than usual. Sleep deprivation can also negatively impact your energy level, mood, and in some cases, your sex drive. Lack of sleep may also affect appetite-regulating hormones, which can lead to an increased appetite.  

Does this mean you have to suffer needlessly? Of course not! By taking care of yourself, making minor lifestyle adjustments and prioritising good sleep hygiene, you'll see that it’s possible to improve your sleep. If you need a little extra help to get a good night's sleep, you can also consider trying supplements. 

Poor sleep or insomnia can also be caused by other factors or menopausal symptoms. For instance, nocturnal hot flashes, stress, insufficient physical activity or lack of exposure to sunlight.