Usually end up instantly flushed or drenched in sweat? Sizzling flashes have an effect on about 75 p.c of ladies going by way of perimenopause or menopause, in accordance with consultants at UCLA Well being, and so they can final so long as 10 years. Whereas hormone alternative remedy will help, there’s been lots of buzz about whether or not or not pure treatments like consuming extra soy ease flushing. So, is soy truly good for warm flashes? We requested docs to settle the controversy.

Is soy good for warm flashes? What the analysis reveals 

Years in the past, it was thought that soy was both not useful for ladies or might have probably damaging results, akin to rising breast most cancers threat. However more moderen analysis reveals no hyperlink between soy and an elevated threat of breast most cancers (in reality, some newer research recommend soy might even cut back breast most cancers threat).  

As for soy’s impact on estrogen menopause signs, a brand new 2025 Menopause examine discovered that postmenopausal girls between the ages of 40 and 65 who ate a low-fat, vegan weight loss program with half a cup of cooked soybeans every day had 92 p.c fewer extreme sizzling flashes and misplaced about 8 kilos in 12 weeks. Why did a soy-rich, plant-based weight loss program have such a robust impact? Specialists have some insights.

“There’s probably a two-part reason this worked so well: the soybeans and the overall plant-based diet,” says Raj Dasgupta, MD, Chief Medical Advisor for Sleepopolis. “Soy is rich in compounds that act like a gentler form of estrogen, which can help calm hot flashes. The low-fat vegan approach also tends to lower inflammation and support healthy weight loss, which may add to the benefit. So you’re getting symptom relief and improved metabolic health at the same time.”

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How soy might cut back sizzling flashes and assist weight reduction

To grasp how soy helps ease sizzling flashes, it helps to know what causes them within the first place.

“Hot flashes occur during perimenopause and menopause when a woman’s estrogen levels decline,” says Navya Mysore, MD, Medical Director of Ladies’s Well being at Nurx. “One of the roles of estrogen is to regulate temperature through a part of the brain called the hypothalamus. The drop in estrogen levels triggers the hypothalamus, and hot flashes ensue.” 

“Soy contains isoflavones, which are a type of phytoestrogen, or plant estrogens, that are structurally and functionally similar to the estrogen found in the human body,” she continues. “As such, they bind to estrogen receptors and carry out many of the same functions of estrogen, like decreasing hot flashes in menopausal women. It is crucial to keep in mind that these phytoestrogens are weaker than human estrogen.”

As famous earlier, the 2025 examine additionally confirmed that contributors misplaced weight. Our consultants supply some doable explanation why.

“Soy is filling, it has protein and fiber, which can help people feel satisfied with fewer calories,” says Dr. Dasgupta. “Some early research also suggests that the isoflavones in soy may help with fat metabolism and blood sugar regulation. And if you’re replacing higher-fat animal proteins with soy, that can naturally reduce your overall calorie intake.”

How one can add soy to your weight loss program 

Soy is available in many kinds, together with soybeans, tofu and soy milk. However the kind of soy you select might make a distinction on the subject of managing sizzling flashes and supporting weight reduction.

“One should always choose a food product in its most natural, organic state and avoid anything overly processed,” says Andrea Caamano, MD, Head of Medical at The HRT Membership. “That same rule of thumb applies to soy. Soybeans are particularly beneficial for managing hot flashes and promoting weight loss, as they are a whole food rich in fiber and protein. Tofu is a decent runner-up, as it is usually lightly processed.” 

“However, once we move on to soy milk and soy yogurt, there tend to be additives, sugar and other ingredients, making these products less natural and potentially causing a worsening of hot flashes and weight gain,” cautions Dr. Caamano

So, how a lot soy do you truly must eat to scale back sizzling flashes and enhance weight reduction?

“Current research shows that 40 to 80 mg of isoflavones daily are effective at reducing the symptoms of menopause, namely, hot flashes,” says Dr. Caamano. “The million-dollar question is, how do we calculate that? That would be two servings a day of a whole soy food source. There are approximately 30 mg of isoflavones in ½ cup cooked edamame and 10 mg of isoflavones in 1 cup of soy milk or soy yogurt.”

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Does soy have negative effects? 

If soy hasn’t been a part of your common weight loss program, you could be inquisitive about negative effects. Specialists say soy is secure for most ladies, however there are exceptions to concentrate on.

“Soy is safe for most women when eaten in moderate amounts (one to two servings daily), with few side effects beyond occasional mild bloating,” says Dr. Mysore. “Those with soy allergies should avoid it, and women with a history of estrogen-sensitive cancers should check with their doctor, though current research supports soy’s safety when consumed as whole foods.”

As well as, “Anyone who has hypothyroidism must be aware of the timing of when they take their medications and eat a soy product,” provides Dr. Caamano. “Soy can interfere with the absorption of thyroid hormones, leading to a worsening state of hypothyroidism.”

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This content material will not be an alternative to skilled medical recommendation or analysis. All the time seek the advice of your doctor earlier than pursuing any therapy plan.