hi, I have done so many diets and now i'm very educated in nutrition. 5 factor diet might help you lose weight, but you are putting so many unnatural things in your body...like loads of sodium. and he says to microwave most of your food...not the freshest way to cook. I have done the 3 hour diet and lost a lot of weight and it was great...but i was looking to lanky and skinny. so i am now going to cook all meals from the new book, "The Most Decadent Diet EVer" by devin alexander, author of the Biggest Loser Cookbook. Check out the recipes and you'll see why, you can have burgers, chocolate molten cake.....all kinds of foods you love and lose weight healthily. I'm also going to pump it up with Jillian Michaels' "Making the Cut" to get ripped in 30 days.