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Eating Right 4 Your Blood Type – John’s Colitis Connection

Below is an email that I recently received from John who uses the site too. I thought it was a great email and he gave me permission to post it for others to read. I think it will be helpful for some of you too.


My name is John. I’ve had UC since 2007 (at work, and it was BAD). I didn’t tell anyone (including my wife) until early this year, when I discovered your blog. I had already studied Eat Right 4 Your Blood Type by Dr. D’Adamo for years, but never committed, but decided to make a complete commitment. After two months, I took it farther and read The GenoType Diet by Dr. D’Adamo and figured out my genotype (it turns out that while I’m type B and my wife and kids are AB, we all happen to be Nomads). I’ve been 100% compliant with BTD and then GTD since January. Not only have I lost nearly 100 lbs, but I have not had a single flare up all year (not even a single cramp)! Nice side effect is that my wife has lost just as much weight as me, and is almost off of Metformin for type 2 diabetes. The beautiful thing about the Blood Type and Genotype Diet is that it takes into account that each person is different. What works for me wouldn’t necessarily work for you because we have different genetic needs. I would LOVE to encourage others suffering with UC to investigate Dr. D’Adamo’s work (actually both father and son).

A little additional information about my current eating habits:

I now eat so that I will be hungry at a given time, rather than eating in response to being hungry. I have even gone three days without food because of a business trip where I could not get quality food, and had no problem with the trip. I don’t eat when I’m feeling stressed either. Most days, I only have 6-12 raw almonds at a time to snack on throughout the day. Evening meals are always before 7PM, and include some mixture of whole eggs, turkey, cod, salmon, tuna, scallops, asparagus, cucumber, celery, eggplant, cauliflower, broccoli, mushrooms, zucchini, squash, basil, ginger, cilantro, thyme, parsley, extra virgin olive oil, virgin coconut oil, and sea salt. Once in a while, I’ll add in other vegetables that are appropriate for my genotype (Nomad) and blood type (B), and I’ll occasionally make almond butter with roasted almonds and some sea salt (though it’s almost become an addiction and I’m cutting that out for a while). My daughter was still on bottles as we made the switch to this diet, so we’ve had no trouble with her eating correctly with us. My son is a different story. He gave us a lot of trouble for a few months, but my wife’s idea about using “sauces” to get him to eat worked like a charm. I just started putting chopped cilantro, lime juice, and extra virgin olive oil on just about everything. Now we all eat very well together. We drink pure water 98% of the time, and decaffeinated green tea the rest of the time. The difference it has made is unbelievable.

Now, having said all of that, I want to thank you for your blog, because the stress of keeping it secret from my friends and family was adding to my problem. Once I read your blog, I let go of it, and I have never felt that level of stress again. In fact, I actually find it difficult to get angry at all any more (and find I have to put on a little bit of a show when I want to get a reaction out of someone, which actually frustrates me that I think I have to do that when I’m not actually angry any more). I love helping others, and I really support what you are doing, so if I can ever be of help on the blog, to help you inspire hope in others, please don’t hesitate to ask.


Thank you so much John for your email and allowing it to be published for others to read. Wishing you and your family the best with good health in 2015 and beyond!

5 thoughts on “Eating Right 4 Your Blood Type – John’s Colitis Connection”

  1. Good for you, John. I started reading up on eating right for your blood type a few years ago. I wish I was as good as you, though. I’m type O pos. I believe this is why the paleo diet doesn’t work for everyone, because we’re all different blood types. Unfortunately for me, I have been a basic vegetarian my whole life so I have a problem with eating meat and I’m sick of chicken but I do eat seafood and sometimes grass-fed beef, I should be on the paleo diet for my blood type. Hope you continue to have excellent results! Good for your wife, too!

  2. Hi All,

    I’m happy that this diet worked for many as per their blood type. I’m on modified SCD. I modified it based on what worked for me. I’m happy with the diet.

    After reading this post one question comes to my mind. We follow paleo or SCD like diets with a notion that our ancestors are these diets 10000 years ago. Or our bodies were made to eat these diets or are capable of digesting them.

    My question is back then were people able to afford different diets? I completely agree with Geno Type diet and my question should be for the author and not you. However just putting this question up as I’ve not read the book and you might throw some ideas.

    In the end it doesn’t matter as long as the diet works. Maybe it’s based on a new science. I’ve heard about the diet from other people not suffering from UC as well.

  3. Diane D

    I used the blood type diet for 18 years with occasional straying but always finding my way back. It wasn’t until a year ago when I fell in to some serious mourning that I started eating some foods that were over the top for me. I ended up in a serious flair and turned to SCD. I still use the blood type as a guide when I feel something in the SCD isn’t agreeing with me. I’m a type A so protein was an issue and I needed to eat more meat than the blood type diet recommended. I’m a big believer in it though. I had already discovered, before being introduced to the diet, so many triggers that the blood type diet confirmed. I could not ignore the accuracy of the diet’s recommendations (for me). Thanks for the post. It sounds like UC affects all blood types. Wishing you well.


  4. The blood type diet works. Its the only thing that stopped my rectal bleeding in a week (along with other supplements that I’ve been taking for months with no results until i tried the blood type diet by dr d’adamo). Im not on any chemical meds for 3 months and willing not to go back to it even though I’ve been through very bad flares.

  5. Glad to see this post, I just got the book and am type O and am going to give it a try. My normal way of eating included dairy and caffeine and I always wondered about the caffeine and it’s affect on me as far as anxiety, etc. It’s hard to switch but interested to see how my body will react. Thanks for the post.

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