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Side Effects of Introducing Soy to a Diet

You should not experience any side effects from introducing soy to your diet, as long as you do not have a soy allergy. You are probably eating some soy now, as it is in many processed foods, including snack foods and energy bars. Read the ingredients label on a food product and look for soy, soy isoflavones or isolated soy protein.

  1. Soy Allergies

    • About 0.5 percent of the population is allergic or sensitive to soy. The allergic symptoms can take several forms, including gastro-intestinal problems, respiratory distress or skin rashes. The symptoms may not show up the first time you eat soy products, and they can be mild or severe. If you feel sick after eating soy, you can just not eat it again. It is better to have your doctor check to see if it is the soy causing your symptoms. Get medical attention if the reaction is severe.

    Minimal Processing

    • Eat most of your soy in minimally processed foods. These include tofu, tempeh, edamame and soy milk. Soy milk is a good alternative for people who are lactose intolerant and cannot drink cow's milk. Tofu and similar foods have been eaten regularly in many Asian countries for many years. Avoid eating too many processed foods, such as tofu that is processed to taste like chicken or hot dogs. They taste good but do have additives, which may cause side effects.

    Medical Effects of Soy

    • Some studies have indicated that soy might help prevent heart disease, certain cancers or other diseases. Other studies have been interpreted to point to negative effects of soy on reproductive hormones, causing cancers or other diseases in both men and women. Although you may read of these from time to time, no negative effects have been proved. Soy is a good source of protein and has many other nutrients. It is often supplemented with calcium, as it is often used by people who do not eat dairy.

    Supplements

    • Soy is a food, not a supplement. It is sometimes offered in a supplement for its perceived health value, but you are better off just eating it as food. It can be a great part of a balanced diet, but should not be eaten at every meal. If you are not among those with soy allergies, you do not have to worry about side effects. Soy oil does not cause allergic reactions. Soy sauce, a flavoring, is high in sodium.

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