Printer Friendly

Children with older fathers have lower Iqs.

By Ian Sample Children born to older men perform worse in intelligence tests than those with younger fathers, researchers have found. A review of medical records of more than 30,000 children showed that those born to 20-year-old men scored on average three points higher in IQ tests than children whose fathers were 50-years-old when they were born. The finding is the first to link menAAEs age to impaired cognitive ability in their children and builds on recent work that suggests older men are more likely to have children with congenital heart defects, autism, schizophrenia and childhood cancers. The same study found that childrenAAEs IQ was marginally higher if they were born to older mothers, a finding scientists have put down to those women spending more time caring for and nurturing their infants. The poorer performance of children with older fathers may be due to several factors, including how they interact with their children, but many scientists believe that genetic mutations that build up in the sperm of older men are to blame. John McGrath at the Queensland Centre for Mental Health Research in Australia analyzed records for 33,437 children born in the US between 1959 and 1965. The data included the childrenAAEs scores on a variety of intelligence tests at the age of eight months, four years and seven years. After taking into account differences in the parentsAAE education and financial security, McGrath found a range of subtle impairments among children whose fathers were older, according to a report in the journal Plos medicine. The differences in IQ scores are of concern because the age of fathers is rising. The Daily Mai

2009 Jordan Press & publishing Co. All rights reserved.

Provided by an company
COPYRIGHT 2009 Al Bawaba (Middle East) Ltd.
No portion of this article can be reproduced without the express written permission from the copyright holder.
Copyright 2009 Gale, Cengage Learning. All rights reserved.

Article Details
Printer friendly Cite/link Email Feedback
Publication:The Star (Amman, Jordan)
Date:Mar 16, 2009
Previous Article:Landfill intake declines as consumers reuse.
Next Article:Use aborted foetus organsin transplants, urges scientist.

Terms of use | Privacy policy | Copyright © 2021 Farlex, Inc. | Feedback | For webmasters |