Research
Hormonal
Soy protein containing phytoestrogens may lower LDL cholesterol and improve lipid profiles in hypercholesterolemic individuals, primarily through up-regulation of LDL receptors.
If you have high cholesterol, adding soy protein to your diet may help lower LDL levels, though results vary. It is not a magic bullet, but a supportive dietary strategy.
ModerateQualifiesMEDIUM confidence
Phytoestrogens in soy protein may stimulate the clearance of cholesterol, probably by up-regulating LDL receptors, and thereby increasing LDL receptor activity (48). This may be of particular significance for hyperlipidemics.
Why this rating
Mixed human clinical trial results; strong animal data.
Source
Potential Health Benefits of Dietary Phytoestrogens: A Review of the Clinical, Epidemiological, and Mechanistic Evidence<sup>1</sup>
Doris M. Tham et al. · The Journal of Clinical Endocrinology & Metabolism · 1998
DOI 10.1210/jcem.83.7.4752
narrative_reviewCited 722×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- High dietary intake of phytoestrogens (specifically isoflavones and lignans) is associated with reduced incidence of hormone-related cancers (breast, prostate, endometrial) in epidemiological studies.Good
- Dietary phytoestrogens (specifically isoflavones from soy and lignans from flax) may confer health benefits for cardiovascular disease, cancer, osteoporosis, and menopausal symptoms through both estrogen-receptor-dependent and independent mechanisms.Moderate
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