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- Paternal_age_effect abstract "The paternal age effect is the study of the statistical relationships of a man's age to sperm and semen abnormalities, fertility, pregnancy outcomes, birth outcome (such as birthweight), probability that the offspring will have a health-related condition, or risk of mortality, or social and other psychological outcomes. The genetic quality of sperm, as well as its volume and motility, all typically decrease with age. The population geneticist James F. Crow said that the fact that DNA in sperm degrades as men age and can then be passed along to children in permanently degraded and irreparable form, which they likely pass on as well, means that the "greatest mutational health hazard to the human genome is fertile older males". He described mutations that have a direct visible effect on the child's health and also mutations that can be latent or have minor visible effects on the child's health; many such mutations allow the child to reproduce, but cause more serious problems for grandchildren, greatgrandchildren and later generations.Because paternity did not become provable until 1970, and the cost of definitively establishing it only recently became low enough to do it on widespread basis, this has meant that only limited scientific research into paternal age effect problems of degraded DNA has been done. Harry Fisch, a physician who has done research in this area, says that research into paternal age effect degradation of DNA is "in its infancy".A 2009 review focusing on the effect to children said that the absolute risk for genetic anomalies in offspring is low, and concludes "There is no clear association between adverse health outcome and paternal age but longitudinal studies are needed."A 2014 study had experts suggesting that the debate based on mixed evidence whether a father’s age is linked to his child’s vulnerability to individual disorders like autism and schizophrenia had been settled. The result being that "Men have a biological clock of sorts because of random mutations in sperm over time". Dr. Patrick F. Sullivan, a professor of genetics at the University of North Carolina, who was not involved in the study said "This is the best paper I’ve seen on this topic, and it suggests several lines of inquiry into mental illness".".
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- Paternal_age_effect wikiPageExternalLink father_factor_raeburn.html.
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- Paternal_age_effect wikiPageID "8610048".
- Paternal_age_effect wikiPageRevisionID "604922541".
- Paternal_age_effect hasPhotoCollection Paternal_age_effect.
- Paternal_age_effect subject Category:Biology_of_bipolar_disorder.
- Paternal_age_effect subject Category:Medical_genetics.
- Paternal_age_effect subject Category:Senescence.
- Paternal_age_effect comment "The paternal age effect is the study of the statistical relationships of a man's age to sperm and semen abnormalities, fertility, pregnancy outcomes, birth outcome (such as birthweight), probability that the offspring will have a health-related condition, or risk of mortality, or social and other psychological outcomes. The genetic quality of sperm, as well as its volume and motility, all typically decrease with age. The population geneticist James F.".
- Paternal_age_effect label "Paternal age effect".
- Paternal_age_effect sameAs m.0279wlz.
- Paternal_age_effect sameAs Q7144548.
- Paternal_age_effect sameAs Q7144548.
- Paternal_age_effect wasDerivedFrom Paternal_age_effect?oldid=604922541.
- Paternal_age_effect isPrimaryTopicOf Paternal_age_effect.