What are the side effects of soya isoflavones?

What are the side effects of soya isoflavones?

While soy isoflavones are generally considered safe for most people when consumed in moderate amounts, they can cause side effects in some individuals. Here are some potential side effects:

1. Digestive Issues: Some people may experience stomach upset, bloating, constipation, or diarrhea when consuming soy products or soy isoflavone supplements.

2. Allergic Reactions: Individuals with a soy allergy can experience symptoms such as itching, hives, swelling, and in severe cases, anaphylaxis.

3. Thyroid Function Interference: High intake of soy isoflavones may interfere with thyroid function, particularly in individuals with existing thyroid disorders or iodine deficiency. This can lead to hypothyroidism in susceptible individuals.

4. Hormonal Effects: Due to their estrogen-like properties, soy isoflavones can affect hormone levels. This might impact menstrual cycles, fertility, or exacerbate hormone-sensitive conditions such as certain types of breast cancer or endometriosis.

5. Interaction with Medications: Soy isoflavones can interact with certain medications, such as thyroid hormone replacement therapies, anticoagulants, and some breast cancer treatments (like tamoxifen). This can alter the effectiveness of these medications.

6. Kidney Health: Soy contains oxalates, which can contribute to the formation of kidney stones in susceptible individuals.

7. Impact on Men: Although generally safe, high doses of soy isoflavones have raised concerns about their potential effects on testosterone levels and sperm quality in men, though research findings are mixed and more studies are needed.

8. Effect on Infants and Children: The long