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[Aug. 23rd, 2012|10:35 am] |
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Older fathers pass on more new genetic mutations to their children than younger fathers, increasing their children's risk of autism, schizophrenia and other diseases, new research published Wednesday shows.
While advanced maternal age is a major cause behind rare chromosomal problems such as Down syndrome in babies, the latest findings add to growing evidence suggesting that at conception it is the father's age— rather than the mother's—that is the main factor behind the passing of new hereditary mutations to children. |
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| á, un vél viens |
[Aug. 23rd, 2012|10:39 am] |
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Older fathers made headlines several years ago when researchers at the Mount Sinai School of Medicine reported that a man over 40 is almost six times as likely as a man under 30 to father an autistic child. Since then, research has shown that a man's chances of fathering offspring with schizophrenia double when he hits 40 and triple at age 50. The incidence of bipolarity, epilepsy, prostate cancer and breast cancer also increases in children born to men approaching 40. (...) A 2009 study at the University of Queensland, Australia, found a correlation between advanced paternal age and poorer performance by children on intelligence tests (the children of older mothers actually performed better). And when researchers at King's College, London, bred mice from fathers of differing ages, the offspring of older fathers exhibited significant deficits in social and exploratory behavior. |
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[Aug. 23rd, 2012|12:15 pm] |
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Shodien loti gribas nolist sturiti un aizmigt, lai ari kadas 9h miega nakti iehavotas. Aiz biroja loga berziem dzelteno lapu aizvien vairak. Gribejas nokert vasaru drusku, bet garaja nedelas nogale sola lietu. Un bus draugi - ta ka slinku dirneshanu parcina diez vai bus. |
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