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Soy-rich plant-based diet tied to 84 percent reduction in menopausal hot flashes: Study

Written By : Hina Zahid |Medically Reviewed By : Dr. Kamal Kant Kohli Published On 19 July 2021 5:00 AM  |  Updated On 19 July 2021 5:01 AM
Soy-rich plant-based diet tied to 84 percent reduction in menopausal hot flashes: Study
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USA: A plant-based diet rich in soy may reduce hot flashes by 84% in postmenopausal women, reducing it from nearly five times per day to fewer than one per day, found a new study in Menopause, the journal of the North American Menopause Society.

During the 12-week study, called the WAVS (the Women's Study for the Alleviation of Vasomotor Symptoms) trial, nearly 60% of women became totally free of moderate-to-severe hot flashes. Overall hot flashes (including mild ones) decreased by 79%.
The study showed that diet changes can be much more powerful for treating hot flashes than scientists had thought. Vasomotor symptoms refer to night sweats, hot flashes, and flushes.

The study used no hormone medications or extracts. Instead, the research team tested a combination of a low-fat plant-based diet plus 1/2 cup of ordinary soybeans added to a salad or soup each day.
"This is a game changer for women aged 45 and over, most of whom we now know can get prompt relief from the most severe and troubling menopause symptoms without drugs," says lead researcher Neal Barnard, MD, president of the Physicians Committee and adjunct professor at the George Washington University School of Medicine.
As many as 80% of postmenopausal women suffer from hot flashes. Heat wells up from the chest, causing flushing, sweating, and chills. At night, hot flashes interfere with sleep. Estrogen-based medications were once routinely used to treat hot flashes but have been shown to increase the risk of breast cancer and other serious problems. Isoflavone extracts from soybeans work only modestly, leaving women and their doctors with few effective options.
Study Details
Postmenopausal women reporting two or more hot flashes per day were randomly assigned to either an intervention group--consisting of a low-fat, vegan diet, including half a cup of cooked soybeans daily--or to a control group that made no diet changes for 12 weeks. The frequency and severity of hot flashes were recorded using a mobile application, and vasomotor, psychosocial, physical, and sexual symptoms were assessed using the Menopause Specific Quality of Life Questionnaire (MENQOL).
Each participant was given a digital self-calibrating scale to track body weight day by day, a mobile app to track hot flashes in real-time, and an Instant Pot to prepare soybeans at home. Each week, the group got together with the research team via Zoom.
"Previous studies have shown that soy could be beneficial, so we decided to put a diet change to the test," says study author Hana Kahleova, MD, PhD, director of clinical research for the Physicians Committee. "We believe that the combination is what is important. By the end of the study, the majority of women on a plant-based diet rich in soy reported that they no longer experienced moderate-to-extreme hot flashes at all and that they experienced significant improvements in their quality of life."
Key Findings
Total hot flashes decreased by 79% and moderate-to-severe hot flashes decreased by 84% in the intervention group. At the study's conclusion, 59% of intervention-group participants reported becoming free of moderate and severe hot flashes. There was no change in this variable in the control group.
In previous randomized trials, soy products have been shown to modestly reduce the frequency of hot flashes. The researchers theorize that the effect may be a result of soy products containing isoflavones, which can be metabolized by gut bacteria into equol--a nonsteroidal compound that has been shown in some studies to reduce the incidence and severity of hot flashes. Previous studies have also shown that those following vegetarian or vegan diets produce higher levels of equol. The new study showed a more robust response, using the combination of a plant-based diet plus soy.
Many study participants also reported improvements in sexual symptoms, mood, and overall energy.
"This was basically a lifesaver for me," said one study participant. "I've got my quality of life back." Another said, "I am sleeping better, and my hot flashes diminished tremendously." Several participants also noticed significant weight loss and better digestion.
"Before you jump to any kind of medication, I would try this route, because it's easy," a study participant said. "Anybody can do it."
The study was based on the new approach to menopausal symptoms described by Dr. Barnard in his book Your Body in Balance. After the book was released in 2020, a reader contacted Dr. Barnard to let him know that his method eliminated her hot flashes within five days. Rather than using isoflavone extracts or soy foods such as soy milk or tofu, she used whole soybeans.
Reference:
The study titled, "The Women's Study for the Alleviation of Vasomotor Symptoms (WAVS): a randomized, controlled trial of a plant-based diet and whole soybeans for postmenopausal women," is published in the journal JAMA Pediatrics.
DOI: https://journals.lww.com/menopausejournal/Abstract/9000/The_Women_s_Study_for_the_Alleviation_of_Vasomotor.96938.aspx


plant-based dietsoyjournal Menopausevasomotor symptoms
Source : Menopause
Hina Zahid
Hina Zahid

    Hina Zahid Joined Medical Dialogue in 2017 with a passion to work as a Reporter. She coordinates with various national and international journals and association and covers all the stories related to Medical guidelines, Medical Journals, rare medical surgeries as well as all the updates in the medical field. Email: editorial@medicaldialogues.in. Contact no. 011-43720751

    Dr. Kamal Kant Kohli
    Dr. Kamal Kant Kohli

    Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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