Flaxseed (Linum usitatissimum)

Evidence-based guide to Flaxseed: benefits, dosage, safety and interactions.

Evidence

Moderate: Effect depends on individual gut bacteria converting lignans to enterolignans; response is more variable person-to-person than isoflavones.

Traditional use and mechanism

Phytoestrogenic support during perimenopause and menopause; cardiovascular protection; digestive health; anti-inflammatory. Recognised in pharmacognosy as lignan-rich source with mild estrogen-modulating activity.

Safety

Excellent safety profile at food amounts. Whole seed contains low levels of cyanogenic glycosides — harmless at normal dietary intake; raw seed in very large amounts is not recommended. Ground/milled or extracted lignans do not carry this concern. ALA content beneficial for cardiovascular health.