Hot flashes are one of the most common symptoms of perimenopause and menopause.  Here, we do a deep dive into what they are, women’s experiences of them, how they differ depending on your stage of perimenopause and menopause, how they differ by ethnicity and some solutions from the femtech world, home remedies and non-prescription solutions.

What will we cover about menopause and hot flashes?

• What is a hot flash?
• How often do women experience hot flashes?
• How do hot flashes differ by ethnicity?
• What causes hot flashes?
• What other symptoms are associated with hot flashes?
• What are the solutions for hot flashes?

What is a hot flash?

A hot flash is a sudden sensation of warmth or heat that can spread throughout the body, especially the face and upper body. It is accompanied by sweating and is often followed by a cold chill. The sensation is primarily due to vasodilation, which increases blood flow to the skin. This means that the skin can often turn red as if ‘flushing’. The heat brought on by hot flashes is sudden and intense and can last for several minutes.  A complete set of symptoms includes;

Sudden warmth: A feeling of intense heat that isn’t caused by external sources.
Flushing: Red, blotchy skin, particularly on the face and neck.
Sweating: Especially in the upper body. Night sweats, which are hot flashes that happen at night, can drench sleepwear and bedding.
Rapid heartbeat: Some women might experience a faster heart rate or palpitations during a hot flash.
Chills: After the hot flash, a person might feel cold or get chills.
Tingling in the fingers: Some women describe this sensation preceding or accompanying the hot flash.
Mood changes: There can be associated feelings of anxiety or irritability.

The persistence of hot flashes varies. While many women may experience hot flashes for about two years, some women continue to have them for several years after menopause. A subset of women can experience hot flashes for a decade or even longer post-menopause (Avis, 2015)

Here is how some of our contributors describe their experiences of hot flashes.

“This sudden furnace that lights up inside”, AG, Ireland

“The immediate rush of adrenaline, a wave of heat and panic cascading through the body, that’s how they feel to me now”, MK, United States

“there’s also this emotional element attached. Some of my friends get feelings of anxiousness, restlessness, and distress when a flash hits. It’s not just about feeling hot; it’s this overwhelming sensation that engulfs your entire being…”, AG, Ireland

How often do women experience hot flashes?

Around 60-85% of women experience hot flashes. This changes depending on your phase of menopause (see table below). Up to a half of perimenopausal women (35-50%) experience hot flashes but more postmenopausal women report them (50-85%).  Within the first two years after the final menstrual period, about 55-60% of women experience hot flashes (Avis, 2015). Years after menopause, the prevalence decreases but they don’t always disappear entirely.  They normally persist for 4 to 5 years, but for nearly a quarter of women they may continue for as long as 10 years (Avis, 2015 & Nanette Santoro, 2021).

Menopause and hot flashes: Frequency of hot flashes by age and stage of perimenopause and menopause. (Woods, 2005)

How do hot flashes differ by ethnicity?

African American Women have consistently reported a higher prevalence of hot flashes compared to Caucasian women. They not only experience them more frequently but often with greater severity. According to some studies, over 80% of African American women may experience hot flashes during perimenopause. There are also differences in the intensity and duration of hot flashes, with African American women experiencing the burden of the longest and most intense symptomology (Santoro, 2021).

Asian Women The prevalence of hot flashes among Asian women varies depending on the specific population studied. Generally, East Asian women, particularly those from Japan and China, report a lower prevalence compared to their Western counterparts. However, the intensity and duration can vary within this group.

Caucasian Women Studies have shown that Caucasian women report a high prevalence of hot flashes. Depending on the study and population, approximately 70% of Caucasian women experience hot flashes during the perimenopausal phase.

Hispanic Women The data on Hispanic women is somewhat mixed. Some studies suggest that they experience a prevalence rate similar to Caucasian women, while others indicate a slightly higher or lower prevalence.

What causes hot flashes?

In short, hormones. As we head into perimenopause, the reduction in estrogen is the major reason for hot flashes. The reduction in estrogen influences how our brain regulates our core temperature. When estrogen levels drop during menopause, this brain region can mistakenly sense that the body is overheating. In response, the body releases heat, resulting in a hot flash (Freedman, 2001). Nevertheless, we still know very little about the exact cause of hot flashes. We do know that, some external factors are thought to trigger them such as spicy foods, alcohol, caffeine, stress and warm environments.

What other symptoms are associated with hot flashes?

Hot flashes are not just an isolated symptom of perimenopause. They are interlinked with various other symptoms and can significantly impact a woman’s life in several ways:

• Sleep Disturbances: Hot flashes occurring during the night, termed “night sweats,” can disrupt sleep patterns. Sleep disturbances can lead to insomnia, fatigue, and mood fluctuations.
• Mood Disorders: The combination of hormonal changes and sleep disturbances can increase the risk of mood disorders such as depression and anxiety.
• Cognitive Changes: Some women report difficulty in concentrating and memory lapses during perimenopause, which can be exacerbated by sleep disturbances due to hot flashes.
• Other Physical Symptoms: Alongside hot flashes, perimenopausal women might also experience irregular periods, vaginal dryness, and a decreased libido.

What are the solutions for menopause and hot flashes?

Here we will focus primarily on direct symptomatic treatment of hot flashes, rather than broader perimenopause and menopause symptoms. We encourage you to consult your physician, after reading up on your needs, to determine the best course of treatments and approaches that are right for you.

Now that we have given that disclaimer – there’s no one-size-fits-all solution to managing hot flashes, and what works for one person might not work for another. Below are a list of different ways to directly address ‘hot flashes’ including the latest technology being developed specifically for women – femtech.

Femtech solutions

Wearable Devices

Cooling Wearables: These are discreet wearable devices that can detect the onset of a hot flash and react by providing instant cooling. They typically make use of sensors and algorithms to detect changes in skin temperature or sweat.
Biofeedback Devices: These help women recognize the onset of a hot flash and use techniques like deep breathing to mitigate its effects.

Apps & Digital Platforms

Symptom Trackers: Mobile apps that allow women to log and track the occurrence of hot flashes, helping to identify triggers and patterns.

Therapeutic Apps: Some apps offer cognitive-behavioral therapy or guided relaxation techniques aimed at reducing the frequency and severity of hot flashes.

Telemedicine Platforms: Digital platforms connecting women with healthcare professionals specializing in menopause and its symptoms.

Smart Clothing

Temperature-Regulating Clothing: Garments designed with special fabrics that can absorb, store, and release heat, helping to regulate body temperature during a hot flash.

Moisture-wicking Fabrics: These are designed to pull moisture away from the skin, which can be beneficial during night sweats.

Other Femtech innovations

VR (Virtual Reality) & AR (Augmented Reality): There are initiatives exploring the use of VR and AR for therapeutic relaxation and distraction techniques during hot flashes.

AI-Powered Predictive Systems:  Algorithms that can predict the onset of a hot flash based on various input signals, allowing pre-emptive actions or notifications.

Education & Community Platforms: Digital platforms offering resources, courses, and community spaces for women to learn about menopause and share their experiences – just like here at the www.femtalkasia.com

It’s worth noting that while many of these solutions sound promising, their effectiveness can vary from person to person. It’s always important to consult with healthcare professionals when considering new treatments or interventions.

Lifestyle and Home Remedies

Stay Cool: Keep your living space cool or use a fan. Dress in layers, so you can remove clothes when feeling warm.

Avoid Triggers: Common triggers include spicy foods, caffeine, alcohol, and tight clothing. It might be helpful to track and identify specific triggers.

Relaxation Techniques: Deep-breathing exercises, guided imagery, and progressive muscle relaxation might help in reducing hot flashes.

Maintain a Healthy Weight: Women who are overweight or obese tend to experience more severe hot flashes.

Exercise Regularly: Engaging in regular physical activity, like brisk walking, might help reduce hot flashes.

Stop Smoking: Smoking can increase the frequency and severity of hot flashes.

Dietary Solutions

Soy: Evidence suggests that isoflavones, compounds found in soy, may help reduce the frequency and severity of hot flashes. However, the results have been mixed, with some studies showing benefits and others showing little to no effect (Thomas, AJ, 2014).

Flaxseed:  Some studies suggest that dietary flaxseed can reduce the frequency and severity of hot flashes. However, more research is needed to establish its definitive benefits (Pruthi, 2012).

Vitamin E: Some smaller studies have shown a slight reduction in hot flash frequency with vitamin E supplementation. However, the evidence is not strong, and larger trials are needed (Barton, 1998).

Alternative Therapies

Acupuncture: Evidence from some randomized controlled trials suggests that acupuncture might help reduce hot flash frequency and severity. However, results are mixed, and it may be more effective for some women than others (Avis, 2016).

Hypnotherapy:  Clinical trials have shown that hypnotherapy can help reduce the frequency and severity of hot flashes in postmenopausal women (Elkins, 2013).

Mindfulness Meditation:  Studies suggest that mindfulness meditation can help in reducing the severity of hot flashes and improving sleep quality (Carmody, 2011).

Non-prescription Therapies:

Over-the-counter products: Some women find over-the-counter products, like plant estrogens, effective. It’s crucial to check with a healthcare provider before starting any OTC treatments.

References

1. Avis NE, Coeytaux RR, Isom S, Prevette K, Morgan T. Acupuncture in Menopause (AIM) study: a pragmatic, randomized controlled trial. Menopause. 2016;23(6):626-637.
2. Barton DL, Loprinzi CL, Quella SK, et al. Prospective evaluation of vitamin E for hot flashes in breast cancer survivors. J Clin Oncol. 1998;16(2):495-500.
3. Carmody JF, Crawford S, Salmoirago-Blotcher E, Leung K, Churchill L, Olendzki N. Mindfulness training for coping with hot flashes: results of a randomized trial. Menopause. 2011;18(6):611-620.
4. Elkins GR, Fisher WI, Johnson AK, Carpenter JS, Keith TZ. Clinical hypnosis in the treatment of postmenopausal hot flashes: a randomized controlled trial. Menopause. 2013;20(3):291-298.
5. Freedman, R. R. (2001). Pathophysiology and treatment of menopausal hot flashes. Seminars in reproductive medicine, 19(03), 323-330.
6. Nanette Santoro, Cassandra Roeca, Brandilyn A Peters, Genevieve Neal-Perry, The Menopause Transition: Signs, Symptoms, and Management Options, The Journal of Clinical Endocrinology & Metabolism, Volume 106, Issue 1, January 2021, Pages 1–15, https://doi.org/10.1210/clinem/dgaa764
7. Pruthi S, Qin R, Terstreip SA, et al. A phase III, randomized, placebo-controlled, double-blind trial of flaxseed for the treatment of hot flashes: North Central Cancer Treatment Group N08C7. Menopause. 2012;19(1):48-53.
8. Thomas AJ, Ismail R, Taylor-Swanson L, et al. Effects of isoflavones and amino acid therapies for hot flashes and co-occurring symptoms during the menopausal transition and early postmenopause: a systematic review. Maturitas. 2014;78(4):263-276.
9. Woods NF, Mitchell ES. Symptoms during the perimenopause: prevalence, severity, trajectory, and significance in women’s lives. Am J Med 2005;118 Suppl 12B:14–24. Doi: 10.1016/j.amjmed.2005.09.031.