This summary table contains detailed information about research studies. Summary tables are a useful way to look at the science behind many breast cancer guidelines and recommendations. However, to get the most out of the tables, it’s important to understand some key concepts. Learn how to read a research table.
Introduction: Soy foods and soy supplements have been suggested as ways to relieve menopausal symptoms. Findings from randomized controlled trials are mixed. Some show soy can reduce hot flashes, while others do not.
Learn more about ways to treat menopausal symptoms.
Current studies suggest eating moderate amounts of soy foods is safe for breast cancer survivors [1-2].
Eating soy may lower the risk of breast cancer recurrence and mortality, but more studies are needed to confirm these findings [1-2].
Learn more about soy.
Learn about the strengths and weaknesses of different types of studies.
Study selection criteria: Randomized controlled trials with at least 75 participants and meta-analyses.
Table note: Relative risk above 1 indicates increased risk. Relative risk below 1 indicates decreased risk.
Study Population(number of participants)
Type of Soy
Soy Reduced Hot FlashesMore Than Placebo?
Randomized controlled trials
Amato et al. 
406women never diagnosed with cancer
Levis et al. 
182women never diagnosed with cancer
Quella et al. 
175breast cancer survivors
Van Patten et al. 
123breast cancer survivors
Ferrari et al. 
121women never diagnosed with cancer
Ye et al. 
84women never diagnosed with cancer
Nahas et al. 
80women never diagnosed with cancer
Faure et al. 
75women never diagnosed with cancer
Bolaños et al. 
Taku et al. 
6 weeks to12 months
Nelson et al. 
*Please note, the information provided within Komen Perspectives articles is only current as of the date of posting. Therefore, some information may be out of date at this time.
Discover the different ways you can help