![]() I get asked about this diet quite often so I decided to do a little bit more research on the topic and go straight to the author, Peter J. "We need to look at a prospective group of women to see if blood group affects your chance of getting pregnant," he said. Rutherford said a bigger study would need to be carried out in the general population to see if blood group caused potential problems for all women trying to conceive. "This is interesting and it shows a potential link but we really need to look at it with these other, more up to date tests of ovarian reserve." However, he said there were other hormones that predicted diminished ovarian reserve which were also important to assess. Tony Rutherford, chair of the British Fertility Society, said: "This is the first time that I'm aware of that researchers have shown a link between blood group and potential for fertility." "The baseline FSH gives us an idea of the quality and quantity of a woman's eggs." Nejat said FSH levels were just one marker of fertility and more studies were needed."A woman's age remains the most important factor in determining her success of conceiving. "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." "From the population we studied, and the fact it was two different centres and there was a good mix of patients ethnically and racially, we can say that blood type O was associated with an FSH level greater than 10 in women seeking infertility evaluation and/or treatment. ![]() "We found that women with A and AB – women with the A blood group gene – were protected from this effect of diminished ovarian reserve. ![]() He said: "In both groups of women that were seeking fertility treatment, those with blood type O were twice as likely to have an FSH level over 10 than those with blood types other than O. 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.ĭr Edward Nejat, from the department of obstetrics and gynaecology at Albert Einstein College, is presenting his findings at the American Society for Reproductive Medicine (ASRM) conference in Denver. Some 44% of the UK population are blood group O and 42% are type A. Meanwhile, those with blood group A were "significantly less likely" to have an FSH level greater than 10 than those who were blood group O. The findings held true even when a woman's age was taken into account and the fact the women came from two different clinics. The study found that women who were blood type O were twice as likely to have an FSH level greater than 10 as those in any other blood group. Ovarian reserve tends to decline significantly as a woman reaches her middle and late 30s and faster in the early 40s. More than 560 women with an average age of 35 undergoing fertility treatment took part in the research, led by experts from Albert Einstein College of Medicine in New York and Yale University.īlood samples were taken to measure levels of follicle stimulating hormone (FSH), a known marker of fertility.įSH levels greater than 10 suggest a woman will have more difficulty conceiving than those whose levels are under 10.Ī high FSH level indicates a diminished ovarian reserve, which refers to both egg quality and the number of eggs left available for fertilisation.
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