Study Reveals Low-Fat Vegan Diet’s Remarkable 95% Reduction in Hot Flashes

by Liam O'Connor
Vegan Diet Hot Flashes

A recent investigation conducted by the Physicians Committee for Responsible Medicine has unearthed fascinating insights into the impact of a low-fat vegan diet on postmenopausal hot flashes. This groundbreaking study showcases an astounding 95% decrease in the occurrence of these vasomotor symptoms, commonly known as hot flashes. Additionally, the dietary regimen contributes to significant weight loss. Notably, alterations in the gut microbiome, particularly the reduction of specific bacterial populations, are closely associated with the reduction in hot flashes. This intriguing connection hints at a potential correlation between diet, gut health, and menopausal symptoms. However, it is essential to emphasize that further extensive research is imperative to gain a comprehensive understanding of these findings.

The study’s primary focus centers on a low-fat vegan diet, which includes soy as a prominent component. This dietary approach not only eradicated severe hot flashes but also demonstrated a remarkable 96% decrease in moderate-to-severe episodes. Furthermore, it effectively curtailed both daytime and nighttime hot flashes by 96% and 94%, respectively. In addition to these significant improvements, participants who adhered to this diet experienced an average weight loss of 6.4 pounds.

Study co-author, Dr. Hana Kahleova, MD, PhD, who serves as the director of clinical research at the Physicians Committee for Responsible Medicine, recommends that women seeking relief from hot flashes should consider adopting a vegan diet rich in fruits, vegetables, grains, and beans. It’s noteworthy that this dietary choice not only ameliorates hot flashes but also offers protection against heart disease and type 2 diabetes.

Insights from the WAVS Trial

This recent research represents a secondary analysis of the WAVS trial, formally known as the Women’s Study for the Alleviation of Vasomotor Symptoms. The Physicians Committee had previously published this study in the journal Menopause.

In the WAVS trial, 84 postmenopausal women experiencing two or more moderate-to-severe hot flashes daily were randomly assigned to either the intervention group, instructed to follow a low-fat vegan diet, including a daily consumption of half a cup of cooked soybeans, or to the control group, who continued their regular dietary habits over a span of 12 weeks.

For the secondary analysis, researchers utilized stool samples from a subset of 11 participants to conduct a gut microbiome analysis both at the study’s outset and after 12 weeks on the vegan diet. The results revealed noteworthy changes in the composition of several families, genera, and species of bacteria.

The Intriguing Link Between Gut Microbiome and Hot Flashes

Of particular interest is the study’s pioneering discovery that reductions in the abundance of Porphyromonas and Prevotella corporis are associated with a reduction in severe daytime hot flashes. Notably, Prevotella corporis has also been identified in the gut microbiome of individuals with rheumatoid arthritis, and it appears to possess pro-inflammatory properties.

Furthermore, a decrease in the abundance of Clostridium asparagiforme was linked to a reduction in overall severe hot flashes and severe nighttime hot flashes. Clostridium asparagiforme has been associated with the production of trimethylamine-N-oxide, a compound linked to an elevated risk of cardiovascular disease and type 2 diabetes. This reduction in Clostridium asparagiforme abundance may provide insights into the cardiovascular benefits associated with a plant-based diet and a potential connection between hot flashes and the onset of cardiovascular disease.

The study also suggests that changes in the abundance of other bacteria examined may play a role in alleviating hot flashes by stabilizing estrogen levels, reducing inflammation, and enhancing satiety, among other beneficial effects.

In conclusion, it is essential to underscore that while these findings are groundbreaking, they warrant further investigation through larger randomized clinical trials to validate and expand upon the insights gleaned from this research.

Reference: “A dietary intervention for postmenopausal hot flashes: A potential role of gut microbiome. An exploratory analysis” by Hana Kahleova, Danielle N. Holtz, Noah Strom, Alex La Reau, Sinjana Kolipaka, Natalie Schmidt, Ellen Hata, Tatiana Znayenko-Miller, Richard Holubkov and Neal D. Barnard, 8 November 2023, Complementary Therapies in Medicine. DOI: 10.1016/j.ctim.2023.103002

Frequently Asked Questions (FAQs) about Vegan Diet Hot Flashes

What is the main finding of the study regarding hot flashes and a vegan diet?

The main finding of the study is that a low-fat vegan diet, which includes soy, leads to a remarkable 95% reduction in postmenopausal hot flashes.

How did the study analyze the impact of the vegan diet on hot flashes?

The study utilized a secondary analysis of the WAVS trial, involving 84 postmenopausal women. Participants were either assigned to follow a low-fat vegan diet or continue their regular diets for 12 weeks. Stool samples were used to analyze the gut microbiome at the study’s outset and after the vegan diet.

What other benefits were observed with the vegan diet?

In addition to reducing hot flashes, the vegan diet also resulted in a 6.4-pound average weight loss. It effectively decreased both daytime and nighttime hot flashes, with a 96% reduction in moderate-to-severe episodes.

Are there specific bacteria linked to the reduction in hot flashes?

Yes, the study found that reductions in the abundance of bacteria such as Porphyromonas and Prevotella corporis were associated with a decrease in severe daytime hot flashes. Clostridium asparagiforme reduction was linked to a decrease in severe night hot flashes.

What potential connections were suggested between gut health and hot flashes?

The study hints at a potential connection between gut health and menopausal symptoms, particularly hot flashes. Changes in the gut microbiome composition may stabilize estrogen levels, reduce inflammation, and offer various other benefits.

What is the significance of this research?

This research provides valuable insights into how a low-fat vegan diet can alleviate postmenopausal hot flashes and potentially improve overall health. It underscores the importance of diet and gut microbiome in managing menopausal symptoms.

What is the next step in this research?

The authors emphasize the need for larger randomized clinical trials to further investigate and validate these findings, paving the way for more comprehensive understanding and potential treatments for menopausal symptoms.

More about Vegan Diet Hot Flashes

You may also like


GrammarNazi November 18, 2023 - 4:01 am

Good read, but typos & errors distract. “fokus keyword” should be “focus keyword” & “Clostridium asparagiforme reduction” – better with “reducing Clostridium asparagiforme.”

Reader123 November 18, 2023 - 8:10 pm

Wow, this diet really helps with hot flashes! But, r they sure it’s all ’bout the diet, not some other stuff? Need more info!


Leave a Comment

* By using this form you agree with the storage and handling of your data by this website.

SciTechPost is a web resource dedicated to providing up-to-date information on the fast-paced world of science and technology. Our mission is to make science and technology accessible to everyone through our platform, by bringing together experts, innovators, and academics to share their knowledge and experience.


Subscribe my Newsletter for new blog posts, tips & new photos. Let's stay updated!

© 2023 SciTechPost