Not So Fast: Advice on Fasting

Fasting has been practiced for religious purposes since ancient times, but in this day and age, we hear about the "Master Cleanse" (or the lemonade diet) being used by celebrities to lose weight. As summer approaches, and with it, the need to wear a bathing suit, you may be considering a fast as a quick-fix for shedding pounds. But beware--fasting can wreak havoc on your body and slow your metabolism, so when you end your fast and begin eating again, you will gain weight at a faster rate than you did before. Some fasting diets claim they can detoxify the body, but there is no evidence that this works, or that the body even needs to be detoxified--that's what your liver, kidneys, and colon are for. However, studies do show that reducing your calories--by eating a conservative amount of raw fruits and vegetables and proteins, or fasting every other day--could add years to your life. Your body enters "survival mode," and people on the calorie restriction diet report a radical increase in energy. This diet is even being recommended by Dr. Oz on the Oprah show. Critics warn undereating can lead to eating disorders, nutritional deficiencies, and fertility problems. If you are considering a fast, consult with your doctor first and do some research before you put your health at risk. It's also important to transition into and off of a fast with plenty of fluids, such as broth and juices. Be prepared if your fast backfires--you may find after one day of starvation, that you binge-eat the next day.