• image.alt
  • With Mayo Clinic gastroenterologist

    Michael Picco, M.D.

    read biography

Mayo Clinic Health Manager

Get free personalized health guidance for you and your family.

Get Started

Free

E-Newsletter

Subscribe to receive the latest updates on health topics. About our newsletters

  • Housecall
  • Alzheimer's caregiving
  • Living with cancer

Question

Detox diets: Do they offer any health benefits?

Do detox diets offer any health benefits?

Answer

from Michael Picco, M.D.

Detoxification, or detox, diets are touted by many as a way to remove "toxins" from the body. This practice stems from the belief that the food you consume contains a range of harmful substances, which accumulate in your body, causing fatigue, headaches, nausea and even disease. But there's no evidence that this is true or that detox diets have any health benefits. Also, in some cases, detox diets can have harmful side effects.

Detox diets vary. But the basic premise is to temporarily give up certain foods that are thought to contain "toxins," such as meat, sugar, certain grains, dairy products and caffeine. Detox diets typically start with fasting followed by a strict diet of raw vegetables, fruit and fruit juices, and water. In addition, some detox diets advocate using herbal laxatives, antioxidants and colon cleansing (enemas) to help "clean" out the intestine and liver. The duration of such regimens often ranges from seven to 10 days.

Some people report they feel better, "lighter," and more focused and energetic during and after detox diets. This may be due to their belief that they are doing something good for their bodies. But it may also be due to eating little — if anything — for several days. Calorie restriction can lead to heightened feelings of psychological well-being.

There is no evidence, however, that detox diets actually remove toxins from the body. Most ingested toxins are efficiently and effectively removed by the kidneys and liver and excreted in urine and stool.

Early side effects of fasting include headaches. Prolonged fasting or severe calorie restriction can result in anemia, low blood sugar and irregular heartbeat. Before going on a fast or detox diet, talk to your doctor.

The best diet is one based on fruits and vegetables, whole grains, lean sources of protein and unsaturated fats. Add regular exercise and stress reduction techniques, and you have a solid foundation for good health.

Next question
Water after meals: Does it disturb digestion?

AN01334

April 22, 2008

© 1998-2009 Mayo Foundation for Medical Education and Research (MFMER). All rights reserved. A single copy of these materials may be reprinted for noncommercial personal use only. "Mayo," "Mayo Clinic," "MayoClinic.com," "EmbodyHealth," "Reliable tools for healthier lives," "Enhance your life," and the triple-shield Mayo Clinic logo are trademarks of Mayo Foundation for Medical Education and Research.

Print Share Reprints

Text Size: smaller largerlarger