In Defense of Food: An Eater's Manifesto by Michael Pollan gives a guided tour of 20th century food science, a history of "nutritionism" in America and a look at the marriage of government and the food industry. Then the book presents a commonsense shopping-and-eating guide, which like the paleo diet focuses on shopping the perimeter of the supermarket. He also now has a much shorter Food Rules: An Eater's Manual.
You likely will lose weight on Whole30—“many people do appear to lose weight while following the plan, likely due to the decreased reliance on processed foods and increased consumption of whole foods, such as fruits and vegetables,” says Cohen. But it wasn’t designed for weight loss, and once the 30 days are over, you may gain all the weight back as you reintroduce your body to a normal diet.
I’ve seen young body-builder types with grocery trolleys full of eggs, cans of tuna, lean beef and especially skinless/boneless chicken breasts – so I adopted that habit about 5 months ago. 2 or 3 eggs for breakfast, sometimes with cheese or bacon, a can of tuna with carb-free herbs for lunch, and then a steak or big chicken breast or even some meat-only hot dogs for dinner. I don’t purposely eat more fat than necessary, mostly because the calories are not needed. I have not been hungry AT ALL, even when sitting down to eat. No temptation to “cheat”, either. Result? I am approaching 100 pounds lost (not proud of being THAT fat, believe me) , blood pressure dropped from 170/100 to 122/80, acid reflux totally gone, any joint pain banished, and a closet full of clothes I can wear once again.
A number of randomized clinical trials have compared the paleo diet to other eating plans, such as the Mediterranean Diet or the Diabetes Diet. Overall, these trials suggest that a paleo diet may provide some benefits when compared with diets of fruits, vegetables, lean meats, whole grains, legumes and low-fat dairy products. These benefits may include: