Cold Therapy for Women: What the Science Actually Says | Based on my conversation with Dr. Susanna Soeberg
Cold therapy for women has become one of the most debated topics in health and longevity. Should women do cold plunges? Is cold exposure safe during your menstrual cycle? Do women need different temperatures than men? I sat down with Dr. Susanna Soeberg, a PhD researcher who has spent her career studying metabolism, brown fat, and cold and heat exposure, to separate fact from fiction. Here's what every woman needs to know about cold therapy.
Brown Fat and Cold Exposure: Why Women Have a Built-In Advantage
Let's start with brown fat, because this is where the metabolic benefits of cold therapy really come to life. Unlike white fat, which stores energy, brown fat actively burns calories and increases energy expenditure. Brown fat cells are packed with mitochondria, and they play a critical role in regulating metabolism and body temperature.
Here's what most people don't know: women actually have more brown fat than men. Research confirms that females have larger brown adipose tissue depots that are not only bigger but also more efficient at non-shivering thermogenesis [1]. Dr. Soeberg explained that this likely comes down to body composition. Women tend to have less muscle mass, so we rely more heavily on brown fat to maintain our core temperature. From an evolutionary standpoint, it makes sense. We needed to survive ice ages just as well as men did, and our bodies adapted by building a stronger brown fat reserve.
Cold exposure activates brown fat, which in turn boosts your metabolism and improves insulin sensitivity. A landmark study found that just 10 days of mild cold acclimation (around 59°F / 15°C) increased peripheral insulin sensitivity by approximately 43% in people with type 2 diabetes [2]. And this isn't limited to diabetics. Research shows that people without type 2 diabetes also see meaningful improvements in glucose metabolism from cold exposure [3]. The best part? It doesn't have to be extreme. Even turning your bedroom temperature down or stepping outside in a t-shirt for a few minutes can activate brown fat. If you're new to cold therapy, that's a great place to start.
Can Women Handle Cold Plunges as Well as Men?
One of the biggest myths I see circulating online is that women can't tolerate cold water immersion the way men can, or that we need significantly warmer temperatures to see benefits. Dr. Soeberg was clear: the research does not support this.
Women and men defend against the cold through different mechanisms. Men rely more on muscle mass to generate heat, while women use vasoconstriction, essentially narrowing blood vessels to shut out the cold more efficiently. In fact, a 2024 study found that women initiate vasoconstriction significantly earlier than men, even when body size and composition are matched [4]. But when you compare the net outcome (core temperature regulation) it's the same. The cold plunge benefits for women are the same as they are for men, and the recommended exposure times don't need to differ either [5].
So no, you don't need a separate "women's temperature" on your cold plunge. Dr. Soeberg explained that the key variable for women isn't temperature at all. It's timing. That brings us to the menstrual cycle question.
Cold Plunge and Your Menstrual Cycle: When to Go In and When to Rest
This is where the conversation gets nuanced, and honestly, where a lot of internet advice falls apart. Dr. Soeberg and I talked openly about cycle syncing with cold therapy. I personally tried pulling back on cold exposure during my luteal phase based on the popular recommendation, and I didn't notice any difference. But I also don't experience strong PMS symptoms, so my experience may not be universal.
Dr. Soeberg's recommendation: if you experience PMS symptoms (fatigue, brain fog, headaches, or cramping), listen to your body. During the luteal phase and menstruation, your body is already under more hormonal stress. Research shows that ovarian hormones like progesterone and estrogen directly modulate the body's thermoregulatory responses, including vasoconstriction and shivering thresholds [6]. Stacking an intense cold stressor on top of that may not serve you. Dr. Soeberg personally skips cold exposure during her period and does heat therapy instead.
That said, some women report that cold water immersion actually helps with cramps. This hasn't been studied formally, but Dr. Soeberg hears it anecdotally from many women. The takeaway? Experiment for yourself. If you feel great doing cold therapy throughout your cycle, keep going. If you feel depleted or foggy, skip a day or two and return when your energy comes back. That's usually after menstruation, when estrogen begins rising again.
How Long Should Women Cold Plunge? Duration, Temperature, and the Soeberg Principle
Brief and consistent beats long and intense. That was the clear message. Dr. Soeberg recommends a couple of minutes of cold water immersion, enough to create a hormetic stress response that signals your body to adapt, without overdoing it. She personally does about two to three minutes, and I keep my cold plunge at 45°F (7°C) for around three minutes.
The Soeberg Principle emphasizes keeping cold exposure short. Her research on winter swimmers showed that those who combined cold water immersion with hot sauna sessions had significantly enhanced cold-induced thermogenesis and altered brown fat regulation compared to controls [7]. Long sessions (like 20 minutes) don't provide additional benefits for men or women and can actually become counterproductive. Consistency matters far more than intensity. Aim for at least a few sessions per week and make it a regular practice. One session is better than zero, but the metabolic benefits compound with repetition.
Cold Therapy During Perimenopause and Menopause
For women navigating perimenopause or menopause, Dr. Soeberg's advice is to keep going, but be willing to adjust. Don't use the hormonal transition as a reason to stop. Instead, be more mindful of recovery. If your normal routine includes cold exposure three times a week plus intense workouts, maybe give yourself an extra recovery day during this phase. Research shows that brown fat thermogenic capacity declines with aging, though this decline is more acute in men than in women [1]. That means women may retain their brown fat advantage longer, which is even more reason to keep activating it. The transition can span years, so the goal is to find a sustainable rhythm rather than pushing through rigidly.
Cold Exposure and Mental Health: The Benefit That Deserves More Attention
This is the piece of the cold therapy conversation that doesn't get enough airtime. Dr. Soeberg shared that participants who followed the Thermalist Method for three months decreased their stress levels by 21%. In her words: "There is no pill in this world that can decrease stress in the body like cold exposure and heat exposure can." And with zero side effects.
The science backs this up. A study published in Biology found that cold water immersion at 14°C increased plasma noradrenaline by 530%, which is the neurochemical behind that rush of clarity and focus you feel when you step into cold water [8]. Research also shows that a single session of cold water immersion can lower negative affect and reduce tension and anxiety [9]. Over months of consistent practice, those acute stress-relief moments compound into measurable changes in your baseline stress, inflammation, and metabolic health. Dr. Soeberg emphasized that more research is needed, especially comparing women and men, but the early data on cold therapy and mental health is promising.
The Bottom Line on Cold Therapy for Women
Cold therapy is not "a guy thing." Women get the same metabolic, immune, and stress-reduction benefits that men do, and we have a biological advantage with more brown fat. The main adjustment for women is timing: being mindful of where you are in your menstrual cycle and how your body feels on a given day.
Keep your cold plunge sessions short, stay consistent, and don't overthink the temperature. If you can do both cold and heat therapy, do both. They offer different benefits, and together they're one of the most powerful longevity tools available. And please, check your sources. If someone is making wild claims about cold exposure online, look at their credentials. A scientist with a PhD who has spent years in the lab carries more weight than a viral post.
FAQ
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A: Yes. Research shows women tolerate cold exposure just as well as men, though through different physiological mechanisms. Women use vasoconstriction while men rely more on muscle mass. The key for women is timing cold sessions around their menstrual cycle and energy levels.
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No. There is no study showing women need warmer temperatures. Both men and women benefit from brief cold exposure at the same temperatures. The difference is about personal comfort, not effectiveness. Keep sessions to a couple of minutes regardless of gender.
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It depends on how you feel. If you experience fatigue, brain fog, or headaches during menstruation, consider skipping cold exposure for a day or two. Some women report that cold water immersion helps with cramps, but this hasn't been formally studied. Heat therapy is a good alternative during your period.
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Yes. Studies show women have more brown fat than men, likely because women have less muscle mass and rely more on brown fat for temperature regulation. Cold exposure activates brown fat, which increases metabolism and improves insulin sensitivity.
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Two to three minutes is enough for meaningful benefits. The Soeberg Principle emphasizes short, consistent cold exposure over long sessions. Avoid sessions longer than a few minutes. The metabolic and mental health benefits come from brief, repeated exposure over time.
REFRENCES
[1] Gilsanz V, et al. "Sex differences and aging: Is there a role of brown adipose tissue?" Molecular and Cellular Endocrinology, 2021. PMID: 33989715. https://pubmed.ncbi.nlm.nih.gov/33989715/
[2] Hanssen MJW, et al. "Short-term cold acclimation improves insulin sensitivity in patients with type 2 diabetes mellitus." Nature Medicine, 2015. PMID: 26147760. https://pubmed.ncbi.nlm.nih.gov/26147760/
[3] Blondin DP, et al. "Cold-induced brown adipose tissue activity alters plasma fatty acids and improves glucose metabolism in men." Journal of Clinical Endocrinology & Metabolism, 2017. PMID: 28945846. https://pubmed.ncbi.nlm.nih.gov/28945846/
[4] Notley SR, et al. "Earlier vasoconstriction in females than males with matched body size and composition in neutral-cool conditions." Journal of Applied Physiology, 2024. PMC: 11459183. https://pmc.ncbi.nlm.nih.gov/articles/PMC11459183/
[5] Solianik R, et al. "Comparison of thermoregulatory responses between men and women immersed in cold water." European Journal of Applied Physiology, 2000. PMID: 11007575. https://pubmed.ncbi.nlm.nih.gov/11007575/
[6] Charkoudian N, et al. "Influences of ovarian hormones on physiological responses to cold in women." American Journal of Physiology, 2022. PMID: 35655670. https://pubmed.ncbi.nlm.nih.gov/35655670/
[7] Søberg S, et al. "Altered brown fat thermoregulation and enhanced cold-induced thermogenesis in young, healthy, winter-swimming men." Cell Reports Medicine, 2021. PMID: 34755128. https://pubmed.ncbi.nlm.nih.gov/34755128/
[8] Šrámek P, et al. "Human physiological responses to immersion into water of different temperatures." European Journal of Applied Physiology, 2000. PMID: 10751106. https://pubmed.ncbi.nlm.nih.gov/10751106/
[9] Kelly JS, Bird E. "Short-term head-out whole-body cold-water immersion facilitates positive affect and increases interaction between large-scale brain networks." Biology, 2023. PMC: 9953392. https://pmc.ncbi.nlm.nih.gov/articles/PMC9953392/