SupplementDEX

Breast cancer

Supplements studied for breast cancer.

Overview

SupplementDEX indexes 22 supplements for breast cancer across 86 studies.

Soy isoflavones from foods such as natto (DEX Score 60) may be linked to lower breast cancer risk in observational research, but post-diagnosis soy intake shows mixed results. Olive Oil (DEX Score 68; medium effect size, high evidence, high trust) in the diet may also reduce breast cancer risk in most indexed research.

Calcium (DEX Score 52; low effect size, high evidence, medium trust) and Vitamin E supplements (DEX Score 40) do not appear to prevent breast cancer in large trials. Black Tea (DEX Score 36; very low effect size, medium evidence, medium trust) shows no risk reduction. See the heatmap and evidence reviews below for all 22 supplements.

Effect graph

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Relevant supplements heatmap

Relevant supplements sorted by DEX Score.

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SupplementDEX Database

25 supplements for , and rated at least stars. All purchase bands. No minimum star filter.

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