Hot flashes: What happens in the body and what really helps

What helps against hot flashes, scientifically evaluated

Menopausal Hormone Therapy (MHT): most effective proven option

Menopausal Hormone Therapy (MHT), formerly known as HRT, is the most well-documented measure against hot flashes. Meta-analytic evaluations show a reduction in frequency and intensity of 75 to 90% compared to placebo.

MHT is not suitable for all women. Contraindications include certain hormone receptor-positive cancers and thromboembolic diseases. The decision for or against MHT should be made individually with a doctor, based on personal risk factors, the intensity of symptoms, and quality of life.

The AWMF S3 Guideline Peri- and Postmenopause (2020) confirms MHT as an evidence-based first-line option for vasomotor symptoms in appropriate cases.

Black Cohosh (Cimicifuga racemosa)

Cimicifuga racemosa is the most commonly used herbal active ingredient for menopausal symptoms in Germany and is hormone-free. The data is mixed: several studies observed a moderate relief of hot flashes, while others showed no clear effect beyond placebo. Cimicifuga is classified in current guidelines as an option for mild to moderate symptoms but should be used under medical supervision in cases of liver disease and in combination with other medications.

Phytoestrogens and Soy Isoflavones: what does research say?

Phytoestrogens are plant compounds that are structurally similar to human estrogen and bind weakly to estrogen receptors, particularly the ERβ receptor, which is expressed, among other places, in the hypothalamus. The best-known group are soy isoflavones (Genistein, Daidzein).

The Cochrane Review by Lethaby et al. (2007) analyzed 30 randomized studies on phytoestrogens and vasomotor symptoms. The result: There is evidence of a reduction in the frequency of hot flashes compared to placebo, especially with standardized isoflavone extracts with documented dosages. These are also the isoflavone extracts contained in theHormonic Midlife Formula.

An important individual factor is equol production: Daidzein from soy is converted into equol, a compound with a stronger affinity for the ERβ receptor, by intestinal bacteria in a portion of the population. Women who can produce equol (about 30 to 50% of the Western population) appear to benefit more from isoflavones in studies.

Non-hormonal medications (SSRIs, SNRIs, Gabapentin, Fezolinetant)

For women for whom MHT is not suitable, there are medically prescribed alternatives. SSRIs and SNRIs (e.g., paroxetine, venlafaxine) affect serotonergic and noradrenergic pathways in the hypothalamus and can reduce frequency and intensity. Gabapentin can dampen thermoregulatory overreactions and is primarily used in the evening for night sweats.

Fezolinetant is a newer NK3 receptor antagonist that specifically targets the neurokinin B pathway, thus directly addressing the neuronal cause described above. This mechanism of action targets the central control center and shows significant efficacy in clinical studies. It is already approved in some countries. All medication options require medical consultation and prescription.

Lifestyle: what is clinically proven

Not every measure marketed as a "natural remedy for hot flashes" is evidence-based. What research does support, however: layering clothing and a cooler bedroom temperature (ideally 16 to 18 °C), because the narrowed thermoneutral zone makes external heat a trigger. In the acute moment, cool air, a handheld fan, or cold water on the wrists and neck can help.

Reduce alcohol: Alcohol dilates peripheral blood vessels and lowers the trigger threshold. Studies show that abstinence from alcohol can significantly reduce the frequency of hot flashes in sensitive women. Regular moderate exercise seems to improve thermoregulation in the long term and reduce the overall symptom burden, while very intensive exertion can trigger hot flashes in the short term. Cognitive Behavioral Therapy (CBT) and mindfulness show a moderate effect on perceived distress in controlled studies.

Micronutrients as part of the overall approach

During menopause, micronutrient needs change. Magnesium is involved in the regulation of the nervous system and neuromuscular transmission and is often insufficiently absorbed. Vitamin D plays a documented role in immune function, muscle strength, and bone health. B vitamins are central to neurotransmitter synthesis and energy metabolism.

Hormonic Baseforms the daily foundation. Midlife Formula supplements it with specific active ingredients for the midlife phase: from magnesium and B vitamins to vitamin D and soy isoflavones, which have been studied in research related to menopausal symptoms.

Hot flashes without menopause: other causes

Not every hot flash is menopausal in origin. If they occur in younger women or are accompanied by unclear symptoms, other causes should be investigated. An overactive thyroid (hyperthyroidism) increases the basal metabolic rate and can cause hot flashes, sweating and heart palpitations; a TSH blood test provides clarity. Certain medications (SSRIs, SNRIs, tamoxifen, opioids, some blood pressure medications), chronic stress via the HPA axis, PCOS and, rarely, neuroendocrine tumors (carcinoid syndrome) are also possible. Everyday triggers such as alcohol, caffeine and spicy foods additionally lower the reaction threshold.

Night sweats: difference from normal hot flashes?

Night sweats are essentially nocturnal hot flashes, the same physiological mechanism, just during sleep. The difference lies in the consequences: night sweats interrupt sleep, lead to waking up with soaked clothes and have a cumulative effect on the sleep-wake rhythm. Chronic sleep deprivation affects cortisol regulation, insulin sensitivity, mood and cognitive function, thereby intensifying other menopausal symptoms such as brain fog, irritability and weight gain.

When to see a doctor?

A doctor's appointment is advisable if hot flashes occur several times a day or regularly wake you up at night, if accompanying symptoms such as severe heart palpitations, significant weight loss or intense exhaustion occur, if symptoms begin before the age of 40 (clarification of POI) or if the suffering is high. A basic blood count with FSH, estradiol and TSH provides initial orientation. You don't have to navigate this step alone, and there are more options than "just waiting". Our medical team at Hormonic Care will be happy to assist you. You can herebook a free video call with our medical team at any time, who already support hundreds of women during menopause.