This news particularly touched me and I think my friends must know! I’m talking about the fertile age “that for males does not count”, is one of the most popular excuses by men to postpone the search for a child. Yet, even if quietly, the biological clock ticks even for males. Often we talk about the decline in female fertility after age 35, but now a study by Harvard University reveals that the age of men has, on the chances of starting a pregnancy, a more significant impact than what is thought.
AGE IN COMPARISON. Laura Dodge, an expert biologist in reproduction, studied data on 19 thousand cycles of in vitro fertilization performed in Boston and surroundings between 2000 and 2014. Women were divided into 4 age groups: under 30, between 30 and 35 years, between 35 and 40 years and between 40 and 42 years. For men it was done the same, with an extra band for the over 42. At this point we tried to understand how the age of him or her could influence the success of the treatment.
For women aged between 40 and 42, the lowest chances of successful births were recorded, and in this case the age of the partner did not seem relevant.
For younger women, however, the age of the partner proved to be important. For those under 30 with a partner between 30 and 35 years of age, the chances of live birth after in vitro fertilization were 73%; but if the man was between 40 and 42 years, the chances would fall to 46%.
WHEN IT IS REALLY. In couples with age-matched partners, his years do not seem to have a significant impact on the birth rate. However, having a younger partner can increase the chances of success: 35-40 year old women with 30-35 year-old mates have registered 54% of completed pregnancies, compared to 70% of those in cases where the man was under 30 years.
On average, 30-35 year-old women with more mature partners had 64% chance of success in these treatments; when the partner was the same age, the odds rose to 70%.
WHY REASON? The study, presented at the meeting of the European Society of Human Reproduction and Embryology in Geneva (2-5 July 2017), does not definitively clarify the causes of this phenomenon. The male age could negatively affect a decline in sperm quality, but because similar results have been found even with men without fertility problems, other factors may come into play that subsequent research will try to identify.
So a news for my male friends that will surely make you think a little and do not say: for children there is Time :))
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