As more women turn to hot and cold therapy for relief, curiosity is rising about how sauna heat and cold plunges interact with the shifting landscape of peri- and menopause. While these practices can offer powerful benefits, from easing stress and improving sleep to supporting circulation and mood, there are also important considerations for those navigating hormonal change. In this article, we explore what the research suggests, where the wellness industry stays too quiet, and how to approach thermal therapy with both confidence and care during this transformative stage. Whatever you take away from this, when it comes to your health, always please consult your health professional.

At Rooftop Saunas, we’ve always believed in meeting people exactly where they are in their wellness journey. And when we began asking deeper questions about how heat and cold therapy might support women through perimenopause and menopause, one thing became immediately clear: this is a hugely important topic with surprisingly little research behind it.

So we partnered with our peri- and menopause consultant, Danielle Keiser, to help us explore what we do know, while acknowledging just how much remains unstudied. What follows isn’t a declaration of certainty, but a thoughtful walk through emerging insights, traditional wisdom, and the lived experiences of women who spend time in our saunas every week.

This is new ground for all of us, and we’re exploring it together.

Why Thermal Therapy May Support Perimenopausal Bodies

Perimenopause is a hormonally dynamic time, cortisol can swing, estrogen rises and falls unpredictably, and the body’s usual cues can feel blurred. Because of this, the stabilising qualities of sauna heat may offer particular support.

Here are some of the physiological pathways researchers believe could be at play:

Potential Benefits

• Mood support
  Heat exposure temporarily boosts norepinephrine and dopamine, two neurotransmitters involved in steadier mood, focus, and motivation, areas many women notice shifting in perimenopause.
• Estrogen responsiveness
  Sauna heat activates heat shock proteins (HSPs), which are thought to improve how the body responds to declining estrogen signalling.
• Circulation and adrenal support
  Better blood flow may help the thyroid and adrenal systems cope with stress during a hormonally demanding transition.
• Vasomotor symptoms (hot flashes, mood swings)
  Many women report fewer disruptive symptoms with consistent sauna use, though responses vary widely.
• Sleep
  Thermal therapy may help improve sleep quality, a major challenge as estrogen dips.
• Cardiovascular health
  Regular sauna use supports heart and vascular function, which becomes increasingly important as estrogen’s protective effects wane.
• Fluid balance
  Sweating may help with the bloating and water retention common in this stage, although the relationship is complex.

Across our community and in Danielle’s work, many perimenopausal women describe an overall sense of steadiness and better mood when they use sauna regularly. But there are important nuances to consider.

Where Caution Is Needed in Peri and Menopause

Because peri and menopause are irregular by nature, responses to thermal stress can be unpredictable.

What to Keep in Mind

• Hot flash mimicry A sauna session can feel exactly like the onset of a hot flash, which some find helpful and others find overwhelming.
• Cardiovascular load Heart rate rises significantly in the sauna. For women with known or suspected cardiovascular concerns, medical clearance is essential.
• Not everyone responds the same Some women feel better, some feel worse, and many are still figuring out their pattern.
• Cold-plunge timing becomes tricky Traditional wisdom recommends avoiding cold exposure during menstrual and late-luteal phases, which are often irregular in perimenopause.

HRT Adds Another Layer of Complexity

Women on hormone replacement therapy (HRT) experience unique fluid-balance shifts due to the hormone estrogen’s effects on sodium, water retention, and vasopressin release. When combined with using a sauna, which dehydrates the body, then followed by natural retention of fluids, this can create cycles of swelling or discomfort.

Key considerations include:

• Different HRT formulations behave differently
  Natural progesterone and drospirenone tend to balance fluid; many synthetic progestogens do not.
• Some HRT users may feel more fluid retention after sauna sessions
• Monitoring blood pressure, swelling, sleep, and recovery becomes more important

This is an area where Danielle emphasises individualisation: two women on “HRT” may have entirely different experiences depending on formulation, dose, and timing.

Thermal Therapy After Menopause

Once hormonal fluctuations settle, the body often responds more consistently.

Potential Benefits

• Heart health Regular sauna use has been associated with reduced cardiovascular disease risk, important as estrogen’s protective effects diminish.
• Bone support Heat exposure may stimulate growth hormone, which plays a small role in bone density.  For a little more context, the ‘growth hormone’ (GH), or ‘human growth hormone’ (hGH), also known as somatotropin or somatotropic hormone (STH), is a peptide hormone produced by the anterior pituitary gland. (It plays a central role in stimulating growth, cell reproduction, and regeneration, particularly during childhood and adolescence.
• Cognitive outlook Some long-term studies link regular sauna use to reduced dementia risk.
• Metabolic improvements Better insulin sensitivity supports steady post-menopausal energy and metabolism.
• Consistent mood, sleep, stress management Many benefits carry over from earlier life stages.

And critically:
There are no cycle timing concerns post-menopause, so cold exposure becomes simpler to navigate.

But Consider:

• Thermoregulation changes with age
• More people in this life stage take medications that interact with heat or cold
• Cold exposure carries higher cardiovascular risk for older adults

What’s True Across All Life Stages

Danielle’s review highlighted three universal truths:

1. Your response is unique

Genetics, fitness, thyroid health, stress levels, and cardiovascular status all shape how your body handles heat and cold.

2. Protocol matters

Temperature, duration, and frequency dramatically change how the body responds.
Hydration and electrolytes matter more than most people realise.

3. There’s still a lot we don’t know

Research on women, especially around hormonal transitions, is limited. Much of what we do know comes from Finnish sauna practices, which differ from modern urban sauna culture.

A Responsible Approach (As We Understand It Today)

Here’s the framework Danielle recommends, and we wholeheartedly support:

Before Starting

• Get medical clearance if you have cardiovascular, thyroid, or adrenal conditions
• Track your cycle, symptoms, and current hormonal status
• Start with shorter sessions of heat and cold exposure.
• Set a hydration and electrolyte routine

During Practice

• Listen to your body, always
• Keep notes on how you feel after each session
• Morning sessions may support cortisol rhythms better

Ongoing

• Reassess frequently; your needs change over time
• Stay in dialogue with your healthcare provider, especially if on HRT
• Adjust based on your personal response, not trends or what others are doing

Where We Landed

What we’re seeing, in research, in traditional wisdom, and in the experiences of our guests is that thermal therapy is neither a cure-all nor something to fear. It’s a powerful tool with real physiological effects, and like all tools, it works best when applied thoughtfully.

For women navigating perimenopause and menopause, heat and cold can offer genuine support. But the body in transition is sensitive, and the most impactful approach is gentle, curious, and personalised.

Sauna and cold plunge is a lifestyle choice and brings with it a host of social benefits, regardless of the physiological effects.

At Rooftop Saunas, we’re committed to continuing this exploration with you: staying open, staying evidence-informed, and staying honest about the limits of what we know.

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