Hiya Bluebird,

You are referring I presume, to Dr D'Adamo's Eat Right For Your Type diet. IMNSHO, this is just a load of unscientific hogwash. There have been threads about this here in the past, with some Type A, B and AB members demonstrating impressive losses on low carb plans.

Have a look at the information here: http://www.earthsave.org/news/bloodtyp.htm
As you will see, Dr D'Adamo's theories are completely unsubstantiated.

Cheers.

Rosebud