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Hot Flashes and Heart Health: What Your Sweats Might Be Saying About Your Blood Pressure

You wake up drenched in sweat, again. You fan yourself mid-meeting while everyone else is asking to turn the heat up. Sound familiar?


If you're navigating perimenopause or menopause, vasomotor symptoms—those delightful hot flashes and night sweats—might feel like a rite of passage. But here's something most women aren’t told: those sudden surges of heat may be doing more than just disrupting your sleep or makeup routine. They might also be nudging up your blood pressure—and your long-term cardiovascular risk.


Let’s talk about the science behind the sweat.


The Vasomotor-Cardiovascular Connection

Vasomotor symptoms (VMS) are caused by dysregulation of the hypothalamic thermoregulatory center, largely influenced by fluctuating estrogen levels. Estrogen plays a protective role in the cardiovascular system by supporting vasodilation, modulating inflammation, and maintaining healthy lipid profiles.

When estrogen declines, your blood vessels become more reactive. Cue: hot flash. But with every flash or nocturnal sweat, your sympathetic nervous system gets a little jolt. And guess what? That jolt can raise your blood pressure.


A Wake-Up Call for Your Arteries

Studies show that women with frequent or severe hot flashes and night sweats have a higher incidence of hypertension and increased cardiovascular events—even after adjusting for other risk factors like age, BMI, or smoking.

In fact:

  • A 2023 meta-analysis in JAMA Network Open found that vasomotor symptoms were associated with a 30% increased risk of cardiovascular disease (Thurston et al., 2023).

  • A study published in Hypertension (2021) found that women with persistent hot flashes had higher 24-hour ambulatory blood pressure, especially at night when blood pressure is normally lower (Joffe et al., 2021).


Translation? If you’re having hot flashes often—especially if they’re waking you up at night—it’s time to pay attention not just to your hormones, but also to your heart.


What Can You Do?

The good news? You’re not at the mercy of your internal thermostat. There are effective, evidence-based treatments that help manage vasomotor symptoms—and may reduce the impact on your cardiovascular system.


Hormone Replacement Therapy (HRT): When appropriately prescribed, HRT can significantly reduce hot flashes and may have cardio-protective effects when started early in menopause (The “Timing Hypothesis”).


Better Sleep, Better Blood Pressure: Night sweats disrupt your sleep—and poor sleep increases cortisol and blood pressure. Targeting night sweats helps break that cycle.


Lifestyle Matters: Regular exercise, stress reduction, cutting back on alcohol, and prioritizing sleep can also make a big difference.


Personalized Care: You deserve more than “it’s just menopause.” I offer individualized hormone assessments, lab work, and treatment plans to help you thrive—not just survive—through this phase of life.


Bottom Line

Hot flashes and night sweats aren’t just annoying—they may be warning signs that your cardiovascular system is under strain. By taking them seriously and working with a hormone-literate provider, you can cool the flashes and protect your heart.


Ready to feel like yourself again? Let’s talk. Your heart—and your sleep shirt—will thank you.


References:

  1. Thurston RC, Johnson BD, Shufelt C, et al. Vasomotor symptoms and cardiovascular events in women: a pooled analysis of six cohort studies. JAMA Netw Open. 2023;6(2):e230105. doi:10.1001/jamanetworkopen.2023.0105

  2. Joffe H, Hall JE, Soares CN, et al. Vasomotor symptoms and ambulatory blood pressure in midlife women. Hypertension. 2021;77(1):147–155. doi:10.1161/HYPERTENSIONAHA.120.16129

  3. Manson JE, Chlebowski RT, Stefanick ML, et al. Menopausal hormone therapy and health outcomes during the intervention and extended poststopping phases of the Women’s Health Initiative randomized trials. JAMA. 2013;310(13):1353–1368. doi:10.1001/jama.2013.278040

 
 
 

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