Hello, I'm Monica Reinagle and you're listening to The Nutrition Diva Podcast Welcome.

I got an email this week from a listener who wanted to know if I'd ever done an episode

on the blood type diet.

I recently ran across a quick mention of the blood type diet he wrote, and I wanted to

hear your take on the legitimacy of it.

If you've previously talked about it, I would greatly appreciate it if you could point

me to that episode.

In fact, I have talked about the blood type diet way back in 2009, which was toward the

end of my very first year doing the podcast.

And after I sent this listener a link to that episode, I started to wonder whether any new

research had been published since then, and sure enough, there was a study published

in 2014 that shed some new light on this old idea, so I thought an update wasn't order.

The blood type diet was proposed by naturopathic physician Peter Diadamo way back in the 1990s.

His book Eat Right for Your Blood Type was a best seller for years.

And the basic idea is that your blood type may be the key to what type of diet is best

for you, and that you won't feel as well or be as healthy if your diet is inappropriate

for your blood type.

The different blood types, O, A, B, and A-B, are genetic variations that appeared at various

points in human evolution.

Type O blood is thought to be the oldest surviving blood type, corresponding with the hunter-gatherer

period.

Type A blood appeared roughly 20,000 years ago, coinciding with the dawn of primitive

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