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Table 3 Top ten contributors to isoflavone intake

From: Prevalence, sources, and predictors of soy consumption in breast cancer

Soy Food Percent Contribution
Soymilk 37%
Pills containing soy, isoflavones, or "natural estrogens" 24%
Protein/energy bars containing soy 12%
Tofu 7%
Soy nuts 5%
Soy meat substitutes (e.g. burgers, TVP) 4%
Liquid nutrition drinks containing soy protein such as Odwalla Future Shake, Ensure Plus 3%
Soy protein powders 3%
Soy yogurt 3%
Miso soup 1%