Blood Type Diet

posted by : Jon Kroupa on 03/18/2012
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The Diet:

Dr. Peter J. D'Adamo wrote a book called Eat Right 4 Your Type in which he says that depending on your blood type you should only eat certain foods. He proposes that blood types evolved as a result of ancient human lifestyles. Cavemen, growers, and nomads each had different diets that their blood types were geared towards.

I didn't know my blood type until a few days before I started the diet. I was really hoping for any type except A, but I lost the lottery and it turns out I am A positive.

The book breaks down all types of foods into ideal, neutral, and harmful. The lists are quite extensive, but here are some of the things that affected my normal eating habits this week.


  • All red meat
  • Poultry if consumed more than 3 times a week
  • Melons, bananas, strawberries
  • Tomatoes, Olives, and Potatoes
  • Kidney beans
  • Cow dairy


  • Minimal whole wheat grans
  • Cornflakes
  • Cornmeal and oatmeal
  • Carrots, broccoli, and greens
  • Grapefruit, lemons, and apples
  • Soy, soy, soy, soy, and soy

It is recommended to fresh squeeze a lemon into a warm glass of water each morning. It is recommended to eat 3 pieces of fruit each day.

The Experience:

Throughout the whole week I was gaining weight and felt as if I was getting fatter. This severely comprised my ability to stay true to the diet.

Monday I bought a vegan salad, but I had to pull out the tomatoes, red kidney beans, and olives. There isn't much left to a salad after you do that. Monday evening I made some vegan corn bread using cornmeal, whole wheat flour, and honey. That stuff came out pretty dense. I also ate a whole grapefruit, which I counted as two pieces of fruit.

Tuesday through Friday I drank lemon juice each morning. Since I still had left over cayenne pepper from the Lemonade Diet I decided to put some of that and the organic maple syrup I still had. So those mornings was like being back on the lemonade wagon.

Monday through Thursday I had cornflakes in the evening with light soy milk. Apparently you need to shake soy milk before every use. Since I failed to do this my soy milk became progressively thicker. Evenutally it was too disgusting to attempt to consume. This is the first time in all my diets that I have purchased soy milk. I only did it because the diet recommended cornflakes as a nutritious cereal to eat.

Tuesday I also had grapefruit as a mid-morning snack, and a lot of corn bread.

Wednesday I had some chicken soup for lunch, a couple of apples, and a couple of sugar cookies while at work. In the evening I made broccoli and finished off my corn bread. I also had a slice of apple pie from Village Inn (Wednesday was not a good day).

Thursday I had oatmeal for breakfast. a chicken wrap for lunch, and some peanut butter sandwiches in the evening.

Friday I had a muscle milk shake, some toasted oats cereal (with milk), some chocolate chips, and some frozen burritos. Friday was also not good.

For exercise I jogged 4 miles Monday evening. Jogged 2 miles Tuesday and practiced Aikido in the evening. Wednesday I did the P90X Chest & Back video. Thursday I jogged 4 miles and finally Friday I lifted weights and taught my class at the community college.

Because I was living for vacation on Saturday this diet only lasted until then.

The Result:

I ended up gaining 3 pounds this week. Is it because I stopped consuming protein and only ate carbs? Maybe so.

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