Children born to Older Dads
As many as 50 percent of A.D.D. affected people may have another syndrome during their lifetime; most commonly depression, anxiety disorder, learning disabilities or bipolar disorder.
Only 15 percent of those eight million actually know they have A.D.D. but all are looking for a label for their lifelong restlessness, spaciness, jumping from one subject to the next, easily distracted from completing tasks and meeting deadlines that adversely affect their world of work.
Previous research has connected schizophrenia and autism with children born to older dads, and a Danish study published last year added bipolar disorder to the list. Biopolar affects more than five million Americans. The new study led by researchers at Sweden's Karolinska Institute strenghtens the evidence.
The leading theory is that older men's sperm may be more likely to develop mutations. Even so, the odds of a person becoming bipolar are so low that the study's authors said it shouldn't dissuade older men from becoming fathers. The study appears in the September 2008's Archives of General Psychiatry.
Researchers analyzed Swedish national registry data from more than 80,000 people, including 13,428 with bipolar disorder who were born between 1932 and 1991. The risks started around age 40 but were stronger among those 55 and older. Children born to those dads were 37% more likely to develop bipolar disorder than those born to men in their 20s. The age of the mothers didn't appear to be much of a factor.
These children also faced more than double the risk of developing bipolar disorder before age 20. Scientists call that early onset disease, and while they have long known that bipolar disorder tends to run in families, early onset disease has been thought to be most strongly linked with genetics.
Source: The Wall Street Journal, September 2, 2008







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