Although studies have had a limited number of sperm during pregnancy during pregnancy over a period of pregnancy, a new study shows that men who were pregnant had a 50% reduction in their pregnancy compared to non-smokers.
The discovery demonstrated that the mother's exposure to nicotine, socioeconomic factors, and smokers had a 41 percent lower birth rate than sperm count and 51 percent less sperm than non-smokers.
"I was very surprised that due to the bad mood exposure, the number of sperm men was so small," said Jonatan Axelsson, a medical specialist at the Lund University in Sweden.
"We know that there is a link between sperm counts and pregnancy, so they can have children in the future.
"Father's smoking is also linked to daughters' breeding life, so the difference that decides whether or not mothers are persuasive is not convincing."
However, the research does not define mechanisms behind it. However, similar studies combine smoking amongst children and among various health outcomes, such as malformations, Axelsson said.
The most recent mutations (known as de novo mutations) come from fatherhood and are related to father's age and complex illnesses, said paperwork published by PLOS ONE.
In addition, researchers have shown that burning is harmful to sperm DNA and smokers have DNA tube steps.
Fake children have been mutations in more than four times in a certain recurrent DNA, like non-smokers.
"Unlike mother's mother, father's gametes are constantly distributed throughout life and mutations occur at a specific moment in cell division.
"We know that tobacco suckers have a lot of substances that cause mutations, so gametes may be able to overcome genes that achieve a reduced quality of sperm," Axelsson said.
The 104 Swedish men aged 17 to 20 carried out their studies.