20 grams of carbohydrates. There are 4 calories/gram, so that is about 80 carbohydrate calories/day. This doesn’t seem sustainable to me as a lifestyle, however, I do think getting rid of the junky carbs in our diet would be a great place to start, and may offer a considerable health benefit.
Again...this is a great book, and I highly recommend it if you have long been confused about nutrition advice/recommendations, and weight loss is a goal.