Fad diets are just that -- fads. A fad diet appears in a book with a promising title, makes the media rounds, and eventually fades into obscurity. Why do these diets disappear? Reason one -- that's how fads work (Pet Rock, anyone?). Reason two -- fad diets just don't succeed in the long term. In fact, they can be downright harmful to your health.
Fad diets tend to be low-calorie regimens or require fasting for a set period, resulting in rapid weight loss or, as many diets put it, "detox." Unfortunately, rapid weight loss is traumatic for your body, and if you do it repeatedly, you put yourself at risk for:
- Slower metabolism (which means future weight gain)
- Weakened immune system
- Heart problems
As for detoxifying the body, your body is already designed to eliminate waste. A detox diet only robs it of nutrients [source: Miller].
But some diets are worse than others. Which one takes top honors for the worst of the worst? Let's take a look.
- The Vinegar Diet. In the 1820s, people drank vinegar to lose weight. Why? Because it gave them diarrhea and vomiting. Successful, yes. Safe? No.
- Chewing and Spitting Out. By chewing your food but not swallowing, you get to taste good food and still lose weight. What you don't get is any nutrition.
- The Sleeping Beauty Diet. With the theory that you can't eat if you're sleeping, people would heavily sedate themselves and sleep for days.
- The Prolinn Diet. A doctor named Roger Linn advocated eating nothing except his 400-calorie per day drink (with no nutrients). Fifty-eight people suffered heart attacks [source: Greene].
- Breatharian Diet. Breatharians claim they can survive on nothing but air, after becoming one with the universe. So far, we haven't seen a success story with this one.
- The Cotton Ball Diet. Eating cotton balls -- yes, cotton balls -- before a meal is supposed to fill you up so you eat less.
- The Twinkie Diet. Since Twinkies only have 150 calories, you can eat up to 10 a day. We dare you.
But the grand prize winner, the trophy holder, and the best in show of the worst fad diet ever? No contest.
The Tapeworm Diet is exactly what it sounds like, although whether many people have actually undertaken the diet is in question. As seen in ads from as early as the 19th century, dieters willingly ingest a tapeworm to consume any food coming down the pipe. Yes, you might not gain a pound, but you could also develop serious nutritional deficiencies and organ infections. Or, you know, die. You'll be pleased to know it's now illegal in the United States to import or sell tapeworms.
If you really want to lose some weight, put down the tapeworm, the cotton balls, and the vinegar. Diet and exercise are scientifically proven -- and definitely not as gross.