There are plenty of folks who want to lose weight fast so it follows that there are always plenty of fad diets. Joe Cross's film "Fat, Sick and Nearly Dead" discusses how a very overweight Mr. Cross decides to do a juice fast for 60 days. It changes his life - he loses weight and makes it a point to influence others to follow in his footsteps. There's even a web site dedicated to his followers who share juice recipes and talk about how great it is to only drink juice for long periods of time to detoxify the body.

Alessandra Bellucci, 23, of Barrington, NH began her juice cleanse with only drinking green smoothies.

Kali Ausplund Dionne from Tenants Harbor just turned 31 years old, but she has had to deal with gluten problems for years. In June of 2008 she was diagnosed with extensive food allergies that didn't include gluten/wheat. After restructuring her diet she was still exhibiting issues, many that mimicked thyroid disease.

"I had been told that my thyroid levels were fine, and that I just had IBS. I had all but given up on ever feeling well again. I felt arthritic, lethargic, tired, brain fuzzy and confused constantly," Dionne said.

Throughout the years there have been many "fad diets" advertised on television and floating around the internet, but Deborah Kaplan, ACSM fitness specialist and life agent in California for health fitness and wellness programs, believes that the Paleolithic diet isn't a diet but a lifestyle.

Robb Wolf's book 'The Paleo Solution: The Original Human Diet' is what Kaplan uses to encourage her clients to "go Paleo." Wolf describes the Paleo diet as "the healthiest way you can eat, because it is the only nutritional approach that works with your genetics to help you stay lean, strong and energetic! Research in biology, biochemistry, ophthalmology, dermatology and many other disciplines indicate it is our modern diet, full of refined foods, trans fats and sugar, that is at the root of degenerative diseases such as obesity, cancer, diabetes, heart disease, Parkinson's, Alzheimer's, depression and infertility."