By:   Katherine Brooking, MS, RD

As a nutritionist, I get questions all the time about the potential benefits of fasting.

People fast for many reasons — for quick weight loss, to “detox” the body, for religous purposes, or even as a political protest. Here is the latest info on the myths and facts about fasting. Before you forsake your fork, read this:

Fasting and weight loss
Most experts (this one included) do not recommend fasting as a way to lose weight. If you’re itching to shed pounds, a drastic cut in calories may seem like the fastest way to see instant results, however when you eat less food, your metabolism slows down to conserve energy. Then, when you go back to your usual diet, your lowered metabolism may cause you to store more energy, so you will likely gain back the weight you lost and possibly even put on more weight when eating the same calories you did before the fast.

Fasting to “detoxify” the body
Many fad diets include a “detox” phase during which dieters are instructed to drink only water or herbal teas. But there is scant scientific evidence showing that fasting will detox or cleanse your body. Fasting does not boost the body’s disposal system or cleanse your body in a healthy way.

Some people say they feel great during or after a fast. They might feel great because they believe fasting is healthy or has a significant spiritual meaning, or they might feel great because severe calorie restriction (like fasting) can produce feelings of happiness or even euphoria. In either case, fasting isn’t actually doing a body good.

What is the sensible, long-term solution for cleansing your body? Eating a healthy diet with plenty of fruits, vegetables, whole grains, lean protein, and unsaturated fats.

On the other hand...
There are some interesting studies indicating that, under some circumstances (and always under medical supervision), fasting may boost general health.