If you can't eliminate dairy from your diet entirely, you should choose the nonfat variety, but consume it in moderation.

What? No Protein?

The strictest part of the diet is the recommendation that you avoid meat, fish, chicken, anything containing fat or oil, nuts, alcohol and commercially prepared foods with more than 2 grams of fat.

Hopkins, however, says this is one part of the diet she doesn't follow. She doesn't feel guilty about it.

"If I had to live without a filet mignon and a glass or two of merlot once in a while, life would not be worth living," she laughs. "Guilt leads to deprivation, which eventually leads to throwing your hands up and forgetting all about healthy eating."

Critics Want More Balance

Critics of the diet agree with Hopkins. Restricting meat, dairy products and fat, they say, deprives your body of nutrients. If, however, you choose to follow the diet to the letter, nutritionists suggest you take vitamin or mineral supplements to make up where the diet lacks. Always check with your doctor first.

"I love this diet because it's not really a diet. It's just a smart and nutritious way to eat. I get to eat real food that tastes good, not something that comes pre-packaged in a box or a can," Hopkins says.

By making small changes to the diet and not depriving herself of the foods she loves, Hopkins has done what nutritionists say is the key to eating well and staying at a healthy weight: You can eat more and weigh less, just as long as you eat more of the right foods at least most of the time.