Veggie Blog

People often say that modern life is “full of toxins,” from polluted air and water to chemicals in food and household products. There is truth in this, but the message is often used to sell cleanses. It helps to be specific about what the risks are and what you can do about them, because the practical steps are mostly simple.

What counts as a toxin?

A toxin or poison is a substance that can harm the body when you are exposed to enough of it. The dose is what matters. Even things that are fine in normal amounts can harm you in extreme ones. Drinking very large amounts of water, for example, can be dangerous, although that is highly unusual. Some exposures come from outside the body, such as smoke, chemicals and contaminated food. Others, such as waste products of normal metabolism, are made inside the body and removed by the liver, kidneys and bowel.

Where does everyday exposure come from?

The biggest and best-documented sources are not mysterious. Tobacco smoke, including secondhand smoke, is a major cause of illness. Alcohol is a toxin to the liver in large amounts. Air pollution, fumes from cleaning products, pesticide residue on produce and germs on raw food can all play a part. Medicines and supplements can harm you if you take too much or combine them badly. Eating a diet high in sugar and refined foods does not poison you in the same way, but it does raise the risk of weight gain and chronic disease.

How can you lower your exposure?

Start with the big things. If you smoke, ask your doctor for help to stop. Keep alcohol low: the latest Dietary Guidelines for Americans simply advise drinking less for better overall health, and some people, such as those who are pregnant, should not drink at all. Wash fresh fruit and vegetables under running water and scrub firm produce with a clean brush; the FDA’s advice on cleaning fruits and vegetables says that there is no need to use soap or a produce wash. Open windows when you use strong cleaners, and never mix cleaning products such as bleach and ammonia. Use medicines as directed and tell your doctor about all supplements you take. Washing your hands and cooking food properly prevents far more illness than any cleanse.

Can a cleanse cure chronic illness?

No. Some of the claims in detox marketing say that toxins cause conditions such as heart disease, arthritis, allergies or fatigue, and that a cleansing program reverses them. Smoking and heavy drinking really do raise the risk of disease, and that is a strong reason to cut back. But a few days of juice or herbs does not undo the damage, and the National Center for Complementary and Integrative Health found no compelling research that detox diets remove toxins. Long-term conditions need a doctor, a healthy diet and regular exercise. Our posts on detox diets and who should skip them and how to judge body detox products explain what to look out for.

When is real detox needed?

People who are dependent on alcohol or drugs may need medically supervised detoxification, because stopping suddenly can be dangerous. If that is you or someone you care about, do not try to manage it with herbs or a diet. In the United States, the SAMHSA National Helpline at 1-800-662-HELP (4357) is free, confidential and open 24 hours a day, every day, and it can point you toward local treatment.

Eating well, moving more and avoiding the exposures listed above will do more for your health than any cleanse. If you want to take the next step, our guide to eating well and letting your body do the work shows how.