Soy supplements deliver concentrated isoflavones from soybeans. These plant compounds are taken to help maintain cholesterol levels already in the normal range, support cardiovascular health, and assist with bone density and blood sugar metabolism.
A standardized extract is the most common form. Most people take it once a day with a meal to improve absorption. The specific product, whether a soy germ concentrate or a fermented soy food, determines the exact dose for a given purpose.
Watch for a few important cautions. Soy can interfere with thyroid function if you are low in iodine, and it may interact with thyroid medications. Anyone with a soy allergy should avoid it. Before starting a soy supplement, people with hormone-sensitive conditions need to check with their healthcare provider.