Grapefruit Oil

Crazy Celebrity Fad Diets

Grapefruit oil gives off an aroma that affects liver enzymes and promotes weight loss. Stars like Jennifer Lopez and model Carmen Electra carry vials of grapefruit oil with them. (Photo by Kevork Djansezian/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.

More from this Slideshow

0 of 0

Master Cleanse Beyonce has to make sure her body is in tip-top shape when she takes the stage. What's her secret? Rumor has it the diva dropped 20 pounds by drinking a mixture of homemade lemonade, maple syrup, water, and cayenne pepper. (Photo by Christopher Polk/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
Acai Berries This high-energy berry of a special Amazon palm tree was made famous by Oprah after she mentioned it on her talk show. (Photo by Michael Loccisano/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
TrimSpa The late Anna Nicole Smith was the celebrity spokesperson for TrimSpa, a dietary supplement designed for weight loss. TrimSpa formerly contained ephedra until that ingredient was banned in the U.S, but now there is a new reincarnation of the product on the market. (Photo by Phil McCarten/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
Macrobiotic Diet In a 2002 interview with Larry King, Madonna said "Macrobiotic means big life and it means getting the most of life -- most life out of your food." A sample dinner of hers is "Fish. Grains, some kind of grains. Some kind of cooked vegetable. Salad." (Photo by Johannes Simon/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
Baby Food Diet It has been reported that mega-stars like Reese Witherspoon and Jennifer Aniston have traded up to two meals a day for tiny jars of baby food to help keep their weight down. (Photo by Kevin Winter/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
The Apple Cider ... Celebrities swear by a pre-meal gulp of vinegar. Heidi Klum has said even a sniff curbs her cravings. (Photo by Stephen Lovekin/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
The Lunchbox Die... Fans of the Lunchbox Diet, created by British personal trainer Simon Lovell, include Kiera Knightly and Fergie. On this regimen, a normal breakfast and dinner are allowed, but instead of lunch snacking from a standard-size lunch box filled with 60 percent vegetables, 30 percent protein, and 10 percent fat (low-fat dressing, cheese, or peanut butter) is the secret to staying svelte. (Photo by Andrew H. Walker/Andrew Walker/Getty Images for CHANEL Beaute)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
Maple Syrup Diet In 2005, actress Rachel McAdams caused a stir after revealing her odd weight loss method. In an attempt to lose weight for her role in "Red Eye," McAdams would drink maple syrup. The high sugar content made her zoom around and she ending up dropping the pounds she was after. (Photo by Bryan Bedder/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
Cabbage Soup Die... The Cabbage Soup Diet is a 7-day, rigid diet plan lasting aimed at kick-starting weight loss. Celebrities like Sarah Michelle Gellar have slurped the low-calorie concoction and dropped around 10 pounds in a week. (Rodriguez/Getty Images for THINKFilm Company)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
The Caveman Diet To get back into shape after giving birth, model and actress Elizabeth Hurely reportedly went on the Caveman Diet. This is a nutritional plan based on the presumed ancient diet of wild plants and animals that various human species habitually consumed during the Paleolithic, a period of about 2.5 million years duration that ended around 10,000 years ago with the development of agriculture. (Photo by Larry Busacca/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
Cookie Diet Singer Kelly Clarkson is such a big fan of cookies that her motto is said to be "eat a cookie, skip a meal."

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
Grapefruit Oil Grapefruit oil gives off an aroma that affects liver enzymes and promotes weight loss. Stars like Jennifer Lopez and model Carmen Electra carry vials of grapefruit oil with them. (Photo by Kevork Djansezian/Getty Images)

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.
Celebrity Vegeta... Do you know which of your favorite stars enjoy and animal-free lifestyle? Click here to find out!

The opinions expressed are solely those of the author and do not necessarily reflect the views of Comcast.