Research Vault / Nutrients
DIM Evidence Guide
Diindolylmethane, a compound related to digestion of cruciferous-vegetable constituents.
Reviewed October 1, 2026 · Sources linked below
How it works
Research examines estrogen-metabolism biomarkers and related signaling. Changes in metabolite ratios are not proof of cancer prevention or universally improved hormone balance.
Simplified mechanism map. It does not represent a proven treatment outcome.
What the evidence can tell us
A randomized trial in people taking tamoxifen found biomarker changes and lower levels of some tamoxifen metabolites, including endoxifen. This raises interaction concerns rather than establishing a treatment benefit.
Safety and important limits
Do not add DIM to cancer treatment or hormonal therapy without the treating clinician's review. Concentrated supplements are not equivalent to eating vegetables.