Category Archives: Blood types and fertility

Who is your perfect partner according to your blood type?

The formula is very simple:

For women:

If a man can donate blood to you, he is compatible.

For men:

If you can donate blood to a woman, she is compatible.

However, two people with the same blood types appear to be the most compatible ones.
Communication appears more natural, less misunderstandings.
People are more likely to just “get each others” in terms of non-verbal communication.

There also needs to be considered whether a person who is not blood type O carries the O recessively or not.
This is called your genotype. Your phenotype only registers the dominant gene, so if your phenotype is A or B,
it means your genotype can be AA, AO in the case of phenotype A and BB or BO in the case of phenotype B.
There are many more AO and BO people than AA and AO people and the distribution in Europe looks as follows:

Genotype distributions in Europe

OO: 42 percent

AO: 38 percent

AA: 8.4 percent

BO: 8 percent

BB:0.36 percent

AB: 7 percent

Note: Blood type AB is both, the genotype and the phenotype as neither A nor B are dominant.

Note: You can also carry the O recessively if you are AB, but that is rare. It is a phenomenon called cisAB where the A and the B are encoded into one gene.
So for example, your blood type can be phenotype AB but your genotype can be cisAB/O.

The formula that I am mentioning above will guarantee that there is a good chance for a healthy pregnancy.
One example is the so-called rh disease which would never come into play.
So do not expect the pharmaceutical industry ever to endorse blood type dating.

Not convinced?

Take a second to go to http://www.datebytype.com/users and type in your own blood type and see who pops up who shares it.

You can play around with the search function and see other blood types which are compatible. The most important thing to remember is knowing what you are looking for to be the key. If you think long-term then act long-term. You just want to have fun, be open and honest about it.
bloodtypedating
Here is the chart pointing out who can donate to you, who you can donate to … meaning … which men and women are most compatible with you.

If you are:

A+
and a man, your perfect woman is blood type:
A+ AB+
and a woman, your perfect man is blood type:
A+ A- O+ O-

O+
and a man, your perfect woman is blood type:
O+ A+ B+ AB+
and a woman, your perfect man is blood type:
O+ O-

B+
and a man, your perfect woman is blood type:
B+ AB+
and a woman, your perfect man is blood type:
B+ B- O+ O-

AB+
and a man, your perfect woman is blood type:
AB+
and a woman, your perfect man is blood type:
Every blood type compatible

A-
and a man, your perfect woman is blood type:
A+ A- AB+ AB-
and a woman, your perfect man is blood type:
A- O-

O-
and a man, your perfect woman is blood type:
all types are compatible
and a woman, your perfect man is blood type:
O-

B-
and a man, your perfect woman is blood type:
B+ B- AB+ AB-
and a woman, your perfect man is blood type:
B- O-

AB-
and a man, your perfect woman is blood type:
AB+ AB-
and a woman, your perfect man is blood type:
AB- A- B- O-

You have 3 choices:

1) Go to the Datebytype.com homepage and look for the picture of someone you like. Who knows, she or he might be perfectly compatible in terms of blood type and everything else.

2) Go to the users page and then type in your blood type as this is the most compatible one long-term speaking.

3) On the same users page type in the blood types compatible with you as given in the chart above. And if you happen to be set on a certain blood type that you really want to search for, then just go for that.

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Women with O blood type may struggle to conceive

Women with blood type ‘O’ could have more trouble conceiving as they age, a study has indicated

Researchers who tested a group of women seeking fertility treatment found those with the blood type O appeared to have a lower egg count and poorer egg quality than others.

blood type fertility

Scientists have discovered for the first time that a woman’s blood group could influence her chances of getting pregnant.

Researchers who tested a group of women seeking fertility treatment found those with the blood type O appeared to have a lower egg count and poorer egg quality than others.

By contrast those with blood type A seemed to have more and better quality eggs.

The findings could lead to women with type O blood being advised to try for a baby earlier, but experts said much more research was needed before such a step was taken.

O and A are the two most common blood groups in the British population: some 44 per cent are type O and 42 per cent are type A.

The study of 560 women, whose average age was just under 35, found that those with blood type O were more likely to have higher levels of ‘follicle stimulating hormone’ (FSH) than those with type A.

Fertility experts regard a high FSH level as a key indicator of having a low egg count, which is known as “diminished ovarian reserve”.

FSH is naturally produced by the body to stimulate the follicles in the ovaries which produce eggs.

As a woman’s ovaries run out of eggs in her 30s and 40s, production is stepped up to encourage more follicles to be made.

The study found that women who were blood type O were twice as likely to have an FSH level above 10 – commonly regarded as the threshold between normal and raised levels – as those in any other blood group.

It did not quantify how much more difficult women with blood type O could find it to conceive.

People with blood group A carry the A antigen, which is a protein on the surface of the cell, but this is absent in people with O type.

The lead author, Dr Edward Nejat of the department of obstetrics and gynaecology at the Albert Einstein College of Medicine in New York, said this was the first time a potential link between blood type and fertility had been identified.

He is presenting his findings, based on women undergoing fertility treatment at the Yale University IVF programme and the Montefiore Institute in New York, at the annual American Society for Reproductive Medicine (ASRM) conference in Denver on Tuesday.

He said: “Those with blood type O were twice as likely to have an FSH level over 10 than those with blood types other than O.

“We found that women with the A blood group gene were protected from this effect of diminished ovarian reserve.

“Patients with blood type O seeking infertility evaluation at these centres have a higher likelihood to be diagnosed with elevated FSH and hence manifest diminished ovarian reserve.”

Susan Seenan, of Infertility Network UK, welcomed the study.

“Anything which might help couples avoid having to have fertility treatment has got to be good news,” she said.

“If couples know that there is a possibility that they might have a fertility problem then perhaps they can address that earlier.”

However, she cautioned that it was “early days” for the research and said more studies should be done before advising blood group O women to try for a baby earlier.

Tony Rutherford, chairman of the British Fertility Society, described the research as “interesting” in that it showed “a potential link” between blood type and fertility.

But he too said a larger study needed to be carried out among the general population – not just those who had gone for help with fertility problems.

“We need to look at a prospective group of women to see if blood group affects your chance of getting pregnant,” he said.

He also said the link between blood group and other hormones that were better predictors of fertility needed to be examined.

Age is the most important determinant of ovarian reserve, which tends to start dropping in the early 30s and then accelerate in the late 30s and 40s. Being obese is also known to affect the number and quality of eggs.

Original article here.

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