Aarhus University

---

Men are responsible for a third of the cases of couples with infertility problems

newborn baby boy with a weight of less than 3 kg (6 lb 10 oz) could be at increased risk of infertility, when the adult points to a Danish study it.

By her early 30s, 8. 3% of the men were small at birth, had fertility problems, compared with 5. 7% of persons born in the normal weight range.

The researchers say that poor growth in the womb could lead to poor development of Sperm production and other organs.

12. 5% of couples affected by infertility - a third of the cases of men affected.

women with fertility problems, and another third, while the Rest of the cases are due to problems in The Man and woman, or of an unknown cause.

The study found that infertility in women is not associated with weight at birth.

scientists at the University of Aarhus looked at More Than 5,500 men and 5,300 women, born between 1984 and 1987, and followed them into adulthood, until 2017.

of these, 10% of the men and women were born, were born for their age; 80% were a "normal" weight at birth and almost 9% in size.

babies born at 40 weeks had a weight of 2. 5kg-4. 5kg in this study. Babies that were defined in the bottom 10% as low.

the mothers with low weight babies had damage to the highest level of cigarette and alcohol consumption, found the study, Smoking is known, the fruit.

Two specific conditions, hypospadias (a malformation where the opening of the urethra not at the tip of the penis) and cryptorchidism (undescended testis) were behind most of the male fertility problems.

Sperm production could be affected by a weak growth of the male fetus in the womb

Anne Thorsted, from The Department of Public Health at the University of Aarhus, said it was not yet clear what was behind The Link between birth weight and infertility.

"A sub-optimal growth environment for the fetus, for whatever reason, could adversely affect the development of Sperm and sexual organs

"It could also be speculated that The Mother could affect the health and lifestyle during pregnancy with both fetal growth and the development of the reproductive functions. For example, we already know that, if The Mother smokes, this can impact on the fetus. "

she added: "Our results show that sometimes we need to on the very early life, explanations of health problems later in life. "

Pre-birth theory

Allan Pacey, professor of andrology at the University of Sheffield, said the study showed that "a fascinating Association".

"It is important to note that this observation prove cause and effect, although it is the theory that one of The Most important parts of a person's life in terms of its fertility occurs, before he was ever born fits.

"This is a bit difficult to get your head around, as a concept, but there is a lot of evidence to support the idea that this new study is now an important part of it," he said.

The researchers acknowledge, has had some limitations.

the average age of The people in the study was 32, and they had not yet reached, the change to the end of their reproductive years, and a follow-up study could be in another 10 years, and the conclusions.

Those classified as "infertile" a diagnosis of infertility or were part of a couple seeking fertility treatment, but that included lesbian and Single Mothers , which may skew the results somewhat.

How To reduce The Risk that a little baby

women are more likely to have a smaller baby if you are over 40 or have high blood pressure, kidney problems or diabetes complications.

Sometimes babies don't grow so well, as expected, for other reasons, such as:

Source :

infertility, fertility, pregnancy

Source of news: bbc.com