Bipolar Disorder Linked To Older Fathers
Older Men's Sperm May Be More Likely To Develop Mutations, Study Shows
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Previous research has connected schizophrenia and autism with older dads, and a Danish study published last year added bipolar disorder to the list. The new study led by researchers at Sweden's Karolinska Institute strengthens 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.
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 increasing around age 40 but were strongest among those 55 and older. Children born to these dads were 37 percent more likely to develop bipolar disorder than those born to men in their 20s.
They 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.
The age of the mothers didn't appear to be much of a factor.
The study, released Monday, appears in September's Archives of General Psychiatry.
While the findings don't explain what might cause some older men to have bipolar children, it "reinforces the notion that there's a strong biological component to this," said Dr. Harold Pincus, vice chair of psychiatry at Columbia University.
Bipolar disorder causes dramatic mood swings, from deep depression to manic highs. It affects more than 5 million Americans.
Sperm are produced throughout a man's lifetime, and scientists believe that as men age there is a greater chance for mutations that could contribute to disorders in their children.
Factors involving mothers, including age and health, have long been thought to be most closely linked with birth defects and other abnormalities. But the new study adds to mounting evidence that paternal factors also play an important role, said New York University researcher Susan Harlap.
Sperm are produced throughout a man's lifetime, and scientists believe that as men age there is a greater chance for mutations that could contribute to disorders in their children.
Advanced paternal age also has been linked with birth defects, and some sperm banks have age limits for donors because of that.
While important for scientists, the study results shouldn't discourage older men from fathering children, said Emma Frans, the lead author.
She said the results suggest that similar mechanisms might contribute to risks for bipolar disorder, schizophrenia and autism. Each of these disorders is thought to have many causes including biologic and outside factors.
© MMVIII The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten, or redistributed.



Parents should refuse the standard course of shots given in America. Insist on safe vaccinations!
Parents should refuse the standard course of shots given in America. Insist on safe vaccinations!
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Posted by caliengineer at 07:23 PM : Sep 01, 2008
Yeah!! Being back Polio, Smallpox, Mumps, Measels and all the other illnesses that caused such a high infant and child mortality rate not so many years ago.
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Utter nonsense. The most reliable studies, and there are now many of them, refute this beyond any reasonable doubt. Reasonable being the operative word, of course.
They actually paid somebody for this?
The comment that BP is nutritional is very close to the reality. I prefer to call it environmental deficiencies with a sales pitch attached. Mental illness is a falsehood. The few real cases are either some controlling factor such as nutrition or organ malfunction (ie liver) or physical damage.
It is usually a pack of lies so one person can gain control of another person. I know of a wonderful young lady right now with supposed deficiencies who has never been helped and the con artists actively interfere with alternative ideas and even religious intervention. Now they look for a fictitious cause for a fictitious illness. HA.
Posted by SistaTee at 03:23 AM
You have a good point. It''s much more realistic to envision someone being "manic" or "depressive" in relation to the disorder. However, it seems that in order to be politically correct, manic must fit in to some category of offensiveness. Manic is perfectly descriptive and the disorder never should have been renamed.
I agree 100% CWP. There''s tons of these people, all they need is to know someone who suffers from a biological disorder to change their mind but until they do it''s ignorance central. I''ve spent my whole life explaining the difference between HAVING depression and BEING depressed. Not the same thing!
Posted by GOP_forever at 08:40 AM : Sep 02, 2008
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And these are exactly the women who will jump from Hillary and vote for Palin. The women who just want a woman in power.
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by Liz_Kelly
May 31, 2009 6:56 PM PDT
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