Hot flashes are among the most common and distressing symptoms of menopause. Up to 75% of all women experience them, some mildly, others so intensely that they seriously disrupt daily life. In this article, we'll look at what happens in the body, which natural measures are scientifically sound, and which supplements can actually help.
Table of Contents
Important: This article is not a substitute for a doctor's visit. For very severe or suddenly occurring hot flashes, especially if you have not yet been diagnosed with menopause, a medical clarification is advisable, as feelings of heat can also have other causes.
What are hot flashes and why do they occur?
A hot flash is a sudden feeling of warmth that spreads from the torso over the chest, neck, and face, often accompanied by sweating, palpitations, and subsequent chills. They usually last 1–5 minutes and can occur during the day as well as at night.
The trigger lies in the brain: the hypothalamus, our body's own thermostat, reacts extremely sensitively to temperature fluctuations during menopause. The reason is the decreasing estrogen level, which disrupts the normal function of the hypothalamus. The brain "thinks" the body is overheating and immediately initiates cooling measures. This manifests itself in sweating, vasodilation, and an increased heart rate.
In short: Hot flashes are not imaginary and not a sign of weakness. They are a direct neurological reaction to altered hormone levels.
When do hot flashes start and how long do they last?
Hot flashes can already occur in perimenopause, i.e., in the years before the last menstrual period, often starting in the mid-40s. The peak is usually in the first 1–2 years after menopause. For some women, however, they last 10 years or longer.
How intense and how long they last is very individual. Genetic factors, body weight, stress, diet, and lifestyle play an important role. This also means that there are real levers that you can influence yourself.
These triggers intensify hot flashes
Certain factors can trigger or intensify hot flashes; knowing them is the first step to control:
- Alcohol: especially red wine, dilates blood vessels and triggers feelings of warmth
- Caffeine: especially on an empty stomach or in large quantities
- Spicy foods: capsaicin activates the same heat receptors
- Stress and cortisol: increased cortisol levels directly intensify the hypothalamic reaction
- Warm rooms and tight clothing: small temperature stimuli are enough to trigger a hot flash
- Smoking: smokers report significantly more frequent and intense hot flashes
What really helps: natural methods
Cooling strategy in everyday life
Sounds simple, but it's effective: layer clothing that you can quickly take off, a small fan at your workplace, cool water within reach, and breathable natural fiber bedding at night. Keep the bedroom significantly cooler than during the day – 16–18°C is considered optimal.
Breathing exercises: scientifically proven
Slow diaphragmatic breathing (about 6 breaths per minute) can reduce the frequency and intensity of hot flashes in some women. Studies, including those in the context of The Menopause Society, found evidence of positive effects, although the results were not consistently clear. It is assumed that slow breathing influences the autonomic nervous system, lowers sympathetic activity, and thereby stabilizes temperature regulation in the hypothalamus.1
Regular exercise
Moderate endurance exercise: 30 minutes three times a week improves thermoregulation long-term. Important: Intense training can temporarily trigger hot flashes but reduce them in the long run. The effect develops over weeks and months, not immediately.
Adjust your diet
A plant-based, fiber-rich diet with few processed foods is consistently associated with fewer and milder hot flashes. Phytoestrogens, plant compounds with weak estrogenic effects, have been researched for years.
Supplements for hot flashes: What the research says
Siberian Rhubarb
Siberian rhubarb is currently one of the better-researched herbal remedies for menopausal symptoms. The special extract ERr 731 has been investigated in several placebo-controlled studies. The results show a significant reduction in hot flashes as well as improvements in sleep problems and mood swings. So far, no serious hormone therapy-typical risks have been demonstrated, but the data available is generally smaller than for conventional hormone therapies. 2
What distinguishes it from other phytoestrogens is that it does not act via estrogenic mechanisms but via a different receptor pathway, which also makes it interesting for women with hormone-dependent diseases.
Red clover isoflavones
Red clover contains isoflavones, which are plant substances with a weak estrogen-like effect. Some studies report improvements in hot flashes, but the overall evidence is inconsistent. Large reviews have so far found no clear evidence that red clover reliably reduces hot flashes more than a placebo. If effects occur, they usually only appear after several weeks of intake.3
Magnesium
Magnesium is involved in the regulation of the nervous system and body temperature. Small studies suggest that magnesium supplementation could reduce the frequency and intensity of hot flashes. However, the scientific evidence is currently limited and not conclusive. Magnesium is generally considered well-tolerated at usual doses and can be particularly useful in cases of existing magnesium deficiency. 4
Sage
Sage is traditionally used for sweating and has shown indications of reducing hot flashes in initial clinical studies. The effect is attributed to flavonoids that influence the autonomic nervous system.
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My personal assessment
What always impresses me about this topic is how differently women experience menopause. Some barely notice anything, while others are severely restricted. This also means that there is no universal solution, but individual levers that one has to try out.
What I hear from customers and our community is that Siberian Rhubarb is a real game-changer for many, but only after consistent intake for at least 4–6 weeks. Anyone who gives up after two weeks does not give the body the time it needs.
To let you in on a little secret: We regularly receive orders from gynecologists and naturopaths, which means women who trust the CLAV brand beyond any marketing claim.
Conclusion
Hot flashes during menopause are biologically justifiable, well-researched, and influenceable. Reduce triggers, practice breathing techniques, adjust your diet, and use targeted supplements such as Siberian rhubarb or red clover. These are not promises, but approaches with real scientific backing.
However, what works for one woman may not work for another. And in case of severe symptoms, talking to a doctor is always the most important first step.
Sources
- Freedman RR. Pathophysiology and treatment of menopausal hot flashes. Semin Reprod Med. 2005;23(2):117-25. doi: 10.1055/s-2005-869479. PMID: 15852197.
- Hasper I, Ventskovskiy BM, Rettenberger R, Heger PW, Riley DS, Kaszkin-Bettag M. Long-term efficacy and safety of the special extract ERr 731 of Rheum rhaponticum in perimenopausal women with menopausal symptoms. Menopause. 2009;16(1):117-31. doi: 10.1097/gme.0b013e31817ff915. PMID: 18779759.
- Lethaby A, Marjoribanks J, Kronenberg F, Roberts H, Eden J, Brown J. Phytoestrogens for menopausal vasomotor symptoms. Cochrane Database Syst Rev. 2013;(12):CD001395. doi: 10.1002/14651858.CD001395.pub4. PMID: 24323914.
- Park H, Parker GL, Boardman CH, Morris MM, Smith TJ. A pilot phase II trial of magnesium supplements to reduce menopausal hot flashes in breast cancer patients. Support Care Cancer. 2011;19(6):859-63. doi: 10.1007/s00521-011-0600-6. PMID: 21399709.
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