Metabolism "A" and Metabolism "B"

Have any of you heard of this...heard of this in the not to distant past...curious for the read. Wonder how one can determine if they are A or B....

 

here is the link

 

 

book basically states that there are 2 kinds of people and diets of certain things work for only certain people.

Good read.  I think people do digest/process things differently.  From personal experiences, I can eat pounds of butter and fat and stay lean but munching on carbs all day and I can feel that.  Could be temporary in sodium in a lot of carb snack foods though.

i still need to buy this book. just from the stuff ive read and the experiences in food and fitness, i could see there being some validity to this

I know that when I get strict with eating healthy and limit carbs such as breads/potatoes that I lose weight .

I'm down 10-11 pounds in a month