Blood type and gender : are women more likely to be A and men O ?

[Maciamo]

After finding out that women with blood type O were likely of suffering from lower ovarian count (http://www.eupedia.com/forum/showpost.php?p=361281&postcount=5), and that type O tended to be protective against cardiovascular problems (http://www.eupedia.com/forum/showthread.php?t=25371), I came to wonder whether there was some of natural selection (e.g. among spermatozoa at conception) favouring O blood type for male embryos and A, AB or B blood type for female ones ?

I have noticed that among my relatives and friends women were far more likely to be A, while men were very often O. I have never heard of a difference of blood type distribution according to gender.

For what it's worth I would like to start a little poll here and see whether my suspicions are confirmed. Thanks for voting.

[iodalach_draiodoir]

I am A+, exactly as my mother.

[MPA]

O+[Father B-/ Mother O+]

[Carlitos]

I'm AB +

Father A-
Mother do not know.

[Marianne]

I'm A+

My mother is A+ and my father is O-

[Nasturtium]

Me (mom) O+
Dad A+
Son O-
Daughter O+
Dad's mom A-
My mom O+

[Angela]

I don't know my mother's or father's blood type, (I don't know where the paperwork is).

However, I was surprised to find out that I am B+, particularly in light of the fact that I read somewhere that it is speculated that B+ people were not as resistant to plague as people of other blood types; some of the towns where my ancestors lived had a 90% mortality from the Black Plague during the Middle Ages.

This is the first I've heard of a connection to gender.

[Mzungu mchagga]

I'm AB +

Father A-
Mother do not know.

I can tell you, your mother is B+ !
I know her very well :grin:

[Carlitos]

I can tell you, your mother is B+ !
I know her very well :grin:

I really imagined.

I guess you're referring to the group B, because otherwise you could not bear so much beauty and joy. :grin:

[Mzungu mchagga]

I really imagined.

I guess you're referring to the group B, because otherwise you could not bear so much beauty and joy. :grin:

Oh wait... she could have also been AB+ :ashamed2:
Didn't think about that first

With your father's A- and you AB+ there wouldn't be more possibilities than that.

[Carlitos]

Oh wait... she could have also been AB+ :ashamed2:
Didn't think about that first

With your father's A- and you AB+ there wouldn't be more possibilities than that.

Lo ignoro, es posible.

[Carlitos]

I asked my mother and said it was B +

[Estella]

I am o negative, the same as my mother. My father and my siblings are all o positive. Also, my husband and 3 children are o positive! There seems to be a lot of group o around in the English midlands.

[Rinoa'Bri]

I am A, and both my children, and my husband, are O positive.

[Reinaert]

A+

Very common over here.

[archaiocapilos]

I am O+. my mother is A-

[hope]

A- Father was negative also and all my siblings.

[Grubbe]

You inherit your blood type like everything else, there is no hocus pocus about it. I am A-, my father is A+ and my mother A-. I suppose there must have been a Rhesus minus connection in my father as well, since I inherited the recessive gene. The blood type A is the most common in Norway.

[julia90]

B0 positive, so i'm B carring also the allele for 0

father is A0, mother is AB brother is A (but i don't know if AA or A0)

[Carlos]

I`m AB+
father A-
mother B+

Hello!!!

[oreo_cookie]

I am male and B+.

[Twilight]

I'm A+ got tested as an infant to figure out if I had 2 X-Chromozones. Not sure about my parent's blood type though.

[MOESAN]

I'm A+ father A+ mother O (+?-?)

[Joey D]

I'm A- (don't know about anyone else)

[Pi gman]

I'm A- (don't know about anyone else)
Hello Joey,

I am male and A- as well. Do you have any blood related disorders? Unfortunately, I have and have had several of them!!

[firetown]

I am also A negative. Which disorders do you have?

[stevenarmstrong]

My partner (female) and I (male) are both O+. Not sure about our parents...

[mitty]

Interesting about women with type O having a lower ovarian count. I am O- and had ovarian failure at the age of 36. My mother was type O+.

[Dagne]

I am A+ as my mother, My father and brother are O+

[TardisBlue]

I'm O-, like my mother. My father is A+

[firetown]

A study from Lower Silesia, Poland shows the opposite. More men than women were type A and more women than men type O.
http://www.rhesusnegative.net/staynegative/why-is-lower-silesia-so-high-for-rh-negative-frequencies/
Data on 158,134 adults (including 113,714 men and 44,420 women) were obtained from two electronic databases containing information about voluntary blood donors.