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Questions of A More Technical Nature

Marriage and Blood Type Compatibility


Hello, Dr. D'Adamo! Do you think there is any reason for a couple considering marriage to consider blood type compatibility?


Well, I would not recommend one choose a mate based upon blood type, since, for example, I know many couples where the man is A and the woman is O (considered a very good combination in Japan! [laughs]) who can't stand each other! However, that same combination seems to work for me.

There is some evidence that certain components having to do with fertility can be shown to be under the influence of blood type, in particular, the level of antibodies a woman secretes into her vaginal tract that are directed toward other blood types can be shown to be under the influence of secretor status and diet. Since the rejection of the man's sperm can often be the result of blood type incompatibility, and the level of antibody in the woman's cervical mucus can be controlled somewhat by diet, we have here a possible rationale for why following the blood type diet has been shown to be so successful in situations of marginal fertility. This is quite dramatic. The woman I wrote about in Eat Right who had 23 miscarriages prior to seeing me, and gave birth a year later after following the diet, recently came back into my office with two more children! When I asked her why she didn't contact me when she was trying to conceive numbers two and three, she said she was rather tight on money so she just followed my directions for what to do for child number one. So the lesson here is not to necessarily choose your mate by blood type, but rather by adherence to the blood type program.

The Ask Dr. D'Adamo internet advice column ran from 1996 to 2009, at which time Dr. D'Adamo's teaching and programming responsibilities no longer allowed him to devote time and resources to directly answering visitor questions. However we've recently reorganized this treasure-trove of material and made it again available to his readership. He occasionally posts new entries. These are marked with a NEW tag.

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