Perimenopause and menopause are not a single event. They're a long transition. For many women, that transition involves disrupted sleep, mood shifts, hot flushes, joint discomfort, and a body that feels less familiar than it once did.
Regular sauna use is emerging as a meaningful, evidence-supported practice during this time. Not a cure. A ritual that supports.
How Sauna Affects the Hormonal System
The heat of a sauna activates the body's stress response in a controlled, beneficial way. This is sometimes called hormesis: a mild stressor that prompts adaptation and resilience. In response to sauna heat, the body releases heat shock proteins, growth hormone, and endorphins.
For women in perimenopause and menopause, several of these responses are particularly relevant.
Cortisol Regulation
Chronic stress and elevated cortisol can worsen perimenopausal symptoms. Sauna use has been shown to reduce cortisol levels and activate the parasympathetic nervous system, the rest-and-digest state. Lower cortisol can mean more stable mood, better sleep, and reduced inflammation.
Growth Hormone Release
Oestrogen decline affects muscle mass, bone density, and metabolic function. Sauna use triggers a significant spike in human growth hormone, which supports muscle maintenance and metabolic health. A study published in Clinical Endocrinology found that two 20-minute sauna sessions at 80 degrees Celsius could increase growth hormone levels fivefold.
Hot Flushes: A Note
This is nuanced. For some women, sauna exposure can initially intensify heat sensitivity. For others, regular thermal regulation training helps the body better manage temperature dysregulation over time. Start gently. Short sessions, lower heat. Build gradually.
Many women report that consistent sauna use over weeks leads to improved heat tolerance and reduced intensity of hot flush episodes. Listen to your body. This is not a sprint.
Mood, Serotonin and Beta-Endorphins
Mood instability during perimenopause is partly linked to oestrogen's role in serotonin production. Heat exposure increases beta-endorphin release, the same neurochemicals triggered by exercise. Regular sauna users often describe improved mood, reduced anxiety, and a stronger sense of calm.
Sleep
Many perimenopausal women report that sauna use, particularly in the evening, deepens sleep. Core body temperature naturally drops as you prepare for sleep. The cool-down after a sauna accelerates this process. Better temperature regulation, better sleep.