Blood type

(Penny) #1

Has anyone heard that your blood type could impact if ketosis will work for losing weight? I once heard that blood type A does not have the acid in the stomace to break down protein and would not work for me. Myth?

#2

Interesting. I am type a and eat mostly meat. I don’t feel like I have a digestion issue…but.look.forward to the responses.

(Penny) #3

Hi Trisha, I guess my question is have you lost weight doing keto?

(You've tried everything else; why not try bacon?) #4

An interesting idea, but it doesn’t sound right to me. I don’t think we would survive if our stomachs couldn’t process protein. Besides, ketosis is about metabolizing fatty acids, not proteins, so I don’t see how blood type comes into it at all.

Do you remember where you heard this? It would be interesting to try and track down.

(Penny) #5

Paul, I once tried Atkins and it wasn’t working. I went to a health food store and that is what they told me. I hope it is not true as I really want to lose 10-15 pounds. I guess I need to stop over thinking all of this!

(You've tried everything else; why not try bacon?) #6

A little looking around from a Google search gives me the impression that most of the work of digesting proteins is done by enzymes, not by stomach acid. There are several enzymes involved, some in the stomach, some in the small intestine. The protein is dissolved into its constituent amino acids, which are then absorbed into the bloodstream. Richard, in one of his posts, wrote that there is a “labile pool” of amino acids that gets drawn from when the body needs to make a structure, a hormone, an enzyme, etc.

I can see a mutation affecting our ability to produce one enzyme, but enough mutations to affect all the proteolytic enzymes? I don’t think an embryo with that much damage would survive to term, much less get born. And I don’t see it being connected with blood type, in any case.

I suspect that whoever told you that was either confused or handing you a line.

BTW, you are going to lose 10-15 pounds rather slowly. The rapid weight loss occurs in people who have a lot to lose. Once we get close to goal weight, it slows down considerably. Doesn’t mean you won’t lose the weight, just that it will take a while. Patience, grasshopper! :grin:

#7

Yes I have. I’m down 35 lbs since June. I would probably be down more but I sometimes overindulge in chocolate.

(Lorraine) #8

Well, I’m A positive and I lost 83 lbs in one year on keto, so it didn’t affect me.

(Laurie) #9

I’m A-positive. I read the book Eat Right 4 Your Type, by Peter D’Adamo. According to this book, what I’m supposed to eat and not eat is almost the opposite of keto. (You can google it.) Definitely not for me.

The only foods that have given me a problem are non-keto foods. (Except for steak, pork chops, and the like, but that’s another issue.)

My recommended ayurvedic diet is all wrong for me too.

(Allie) #10

I’m A+ and never had a problem.

(Ken) #11

This concept is based on D’Adamo’s “Eat Right for your Type” guidelines of a couple of decades ago. The problem is that he got the Evolution backwards, so his concept is invalid. It was also debunked repeatedly by Cordain and the old Paleo working groups. D’Adamo’s guidelines for Type O are not too bad, but he’s off base for the other types due to him not understanding the Evolution.

(Jeanne Wagner) #12

I’ve read Eat Right 4 Your Type as well, around 15 years or so ago. No for me. Also the Ayurvedica diet for me was for Kapha was opposite what seems to work for me now. It’s primarily vegetarian-like, or Mediterranean style with little to no meat. My secondary was Pitta. I am least Vata. But that was also around 20 years ago and I wonder if I would test differently now. Just goes to show us that we are all so different and we have to keep searching until we find what works for us.

(Jeanne Wagner) #13

I am A positive and I can’t seem to get enough ribeye. The fatty red meat. I’ve tried NY strip too, and I just prefer ribeye. I had bought a pack of sirloin the other day to try to save money on the meat, and it was not very good to me. It tasted like the muscle it is. I still ate it, but I definitely tasted the difference.

I personally would not go by what a health food store person told me per se, it’s good that you are asking around.

(Penny) #14

Lauria, exactly the book that I was told to read…and bought…and did. That is why I thought ketosis might not work for me. But trying it anyway! …

(Doug) #15

A-negative here, and I’ve always liked MEAT. :smile: Even as a kid, when Mom made pork chops or steak, it was like, “Oh YEAH Baby!”

The “blood type diet” was successful for some people because it features less processed food, less added-sugar stuff, and much less “junk food” in general. Heck, it would be a step up for most.

There’s one little kernel of truth in it, as far as I know - that blood type A people will react to lectins in a very limited number of legumes, when they are consumed raw. Makes red blood cells clump together. But lectins are found in many foods, and the vast majority react with people of all blood types. Cooking or soaking the food before eating destroys the lectins, which renders the question considerably moot, to start with.

(Running from stupidity) #16

Yeah, I think this is the issue.

#17

Hello, I also have type A, but successfully lost around 20 kilos on LCHF, and i actually previously believed that meat is rather inappropriate choice for those having this blood type. According to this theory, we should eat vegetables, grains and so on, and get our protein from plant sourses. I personally never had any issues digesting any kind of meat while being LCHF. So my opinion is, that the theory is not correct…
sorry for my Englisch, I am from Ukraine)

(Tara) #18

I’m A positive. I don’t have any trouble digesting protein/meat. Whatever you were told was a myth. I’ve done atkins and keto off and on several times over the last 5 years with some decent weight loss.
Best of luck with your 10-15lbs to lose. That’s exactly where I’m at. The weight loss progress gets harder when you don’t have much to lose so I’m thinking about joining a gym. I have a list of excuses a mile long, I hate exercising, especially with other people around.

(Kema V) #19

I followed the blood type diet before starting Keto and felt much better. But I’m also type O so there’s that… It basically said to eat meat and lose the wheat, corn and white potato.

(Ken) #20

Just to clear things up. D’Adamo’s concept was that bloodtype evolution primarily occurred in response to the end of the Paleolithic when humanity started to introduce grains, beans etc. into our diets. He said type O was the oldest and more adapted to the Paleo type pattern. Next he said type A came about with adaptations for eating grains. Then type B for dairy tolerances. Lastly was the type AB variants with adaptations for both. He essentially said this all occurred within the last 12,000 years ago with the end of the Paleolithic.

The problem is that it’s wrong, and essentially backwards. Anyone with a basic understanding of Evolution, and especially the Hardy-Weinburg Equilibrium Equation understands that the 12,000 year timespan is absurdly short. It simply didn’t happen that way.

Actually, type O is the youngest blood type, and actually developed during the time of the Erectines one or two million years ago. The theory is that it was a response to Humanity’s evolution TOWARDS Obligate Carnivory, not away from it.

I followed his type O guidelines early on and did begin my fat loss process. It’s mainly fat based nutrition with a little fruit added. After more research I transitioned over to the 60-35-5 Paleo macro.