Sauna Benefits for Women — What the Science Actually Shows
Dr. Susanna Søberg, PhD · soeberginstitute.com
Most sauna research has been conducted in male subjects.
The landmark Finnish longevity studies. The cardiovascular research. The athletic recovery literature. The majority of participants were men. And while the findings are valuable — and many of the benefits translate across sexes — the specific ways in which sauna therapy interacts with female physiology have been largely overlooked.
As a female metabolic scientist who has specifically studied the differences between male and female responses to thermal exposure, I want to address this gap directly.
Because women are not simply smaller men. And the dose, the timing, and the protocol that produces optimal outcomes for a man is frequently not the right approach for a woman.
What we know — the established science
The heat shock protein response to sauna exposure applies equally to women and men. HSPs play a critical role in cellular repair, protein folding, and protection against the cellular damage associated with aging. For women — who face specific challenges around inflammation, hormonal transitions, and oxidative stress — this cellular repair mechanism is particularly relevant.
The cardiovascular benefits of regular sauna use are also well established and applicable to women — and arguably more important. After menopause, when oestrogen’s protective cardiovascular effects diminish, the cardiovascular training stimulus of regular thermal exposure becomes one of the most accessible and evidence-supported tools for maintaining cardiovascular health.
The nervous system effects are where I find the most compelling case for women specifically. Women are disproportionately affected by chronic stress — not because of psychology, but because of biology. The interaction between cortisol, oestrogen, and progesterone creates a more complex stress response than in men. Regular structured sauna practice — particularly in combination with cold exposure, as in the Thermalist® Method — trains the autonomic nervous system in ways that are directly relevant to female stress physiology.
What women need to know that most sauna content ignores
The menstrual cycle influences thermoregulation. In the luteal phase — the second half of the cycle after ovulation — progesterone elevates basal body temperature and the physiological cost of heat exposure is marginally higher. Paying attention to how your body responds during different cycle phases and adjusting intensity accordingly is part of an intelligent practice.
During perimenopause and menopause — when thermoregulation becomes less stable and hot flashes are common — there is emerging evidence that regular thermal training may support thermoregulatory adaptation over time. This is an area where the research is still developing, but the biological mechanism is plausible and the anecdotal evidence from women in the Thermalist® community is consistent.
And pregnancy: sauna use during pregnancy is generally not recommended, particularly in the first trimester and at high temperatures. Always consult your physician.
My personal view
I believe the science of thermal health for women is one of the most underdeveloped areas in the wellness research landscape. Most of what I have built — the Thermalist® Method, the Søberg Principle, the contrast therapy system — was developed with both male and female physiology in mind, because the research demanded it.
Women deserve precision in this space. Not generic wellness content adapted from male research. Actual science that takes female physiology seriously.
That is what I am building — and what I teach in the courses at the Søberg Institute.
→ The 3 Week Thermalist Cure® — soeberginstitute.com
→ Søberg® 12-Week Reset — soeberginstitute.com
Share this with a woman in your life who deserves the honest science. 🌊
— Dr. Susanna Søberg
