Soy Consumption Guidelines

Introduction to Soy Consumption

Moderate soy consumption, defined as up to 3 servings daily of whole soy foods, is safe and potentially beneficial for women, according to the American Cancer Society, and may provide health benefits including reduced cardiovascular disease risk and potential reduction in breast cancer recurrence 1, 2, 3
The American Heart Association recommends soy foods as part of a heart-healthy diet due to their high polyunsaturated fat, fiber, vitamin, and mineral content with low saturated fat 2, 3

Moderate soy consumption is associated with reduced overall mortality (16% reduction) and breast cancer recurrence (25% reduction) in breast cancer survivors, as reported by the American Cancer Society 1
The phytoestrogens in soy have both estrogenic and antiestrogenic effects, which paradoxically may protect against hormone-dependent cancers rather than promote them, according to the American Cancer Society 6, 7
Soy foods are beneficial for cardiovascular health due to high polyunsaturated fat, fiber, vitamin, and mineral content with low saturated fat, as recommended by the American Heart Association 2, 3
Asian populations consuming 55 g/day of soy protein have significantly lower cardiovascular mortality compared to Western populations (99 vs 197 deaths per 100,000 for women aged 35-74), as reported by the American Heart Association 9, 10

Asian men consuming high amounts of soy have substantially lower cardiovascular mortality (201 vs 401 deaths per 100,000 for men aged 35-74 compared to US men), according to the American Heart Association 9, 10
Soy foods can beneficially replace animal proteins high in saturated fat and cholesterol, as recommended by the American Heart Association 2, 3

Whole soy foods, such as tofu, soy milk, edamame, soy nuts, tempeh, and miso, are recommended as part of a healthy diet, according to the American Cancer Society and the American Heart Association 2, 3, 5
Up to 3 servings daily of whole soy foods is consistent with Asian dietary patterns and appears safe, as reported by the American Cancer Society 4, 5
Concentrated soy isoflavone supplements in pill or powder form should be avoided, especially for breast cancer survivors or those at high risk, as warned by the American Cancer Society 6, 8, 2, 3, 7