This summary table contains detailed information about research studies. Summary tables offer an informative look at the science behind many breast cancer guidelines and recommendations. However, they should be viewed with some caution. In order to read and interpret research tables successfully, it is important to understand some key concepts. Learn how to read a research table.
Introduction: Dietary and herbal supplements have been suggested as a way to relieve menopausal symptoms such as hot flashes. However, findings from most randomized controlled trials and one meta-analysis have not shown a benefit.
Learn more about flaxseed, omega-3 fatty acids and other dietary supplements in the Complementary and Integrative Therapies section.
Learn about the strengths and weaknesses of different types of studies.
Study selection criteria: Randomized controlled trials with at least 60 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 Supplement
Supplements Reduced Hot Flashes More Than Placebo?
Randomized controlled trials
Reed et al. 
Omega-3 fatty acid capsule
Tice et al. 
Red clover extract
Pruthi et al. 
146 breast cancer survivors and cancer-free women
Lucas et al. 
Lipovac et al. 
109 cancer-free women
Red clover capsule
Colli et al. 
75 cancer-free women
Flaxseed capsule or ground flaxseeds
Lewis et al. 
Cochrane review 
Discover the different ways you can help