Sperm abnormalities in older men











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Molecular aspects of declining sperm motility in older men

Relative to children born to men 20 to 24 years old, those who were born to men over 45 were 13 times more likely to be diagnosed with ADHD. The type of men who have children later in life may be different from those who do not, and those differences may be at least partially responsible for the increased autism rates. They were born to the same father at different times in his life. But even more striking, and notable, were the effects on ADHD diagnosis. Obstetricians have a special category for pregnant women over It turns out this problem is surmountable with a simple trick. The primary issues in the latter category are autism and attention deficit hyperactivity disorder ADHD. Because mothers often age along with fathers within a family, if we analyzed sibling pairs with the same mother and the same father, it would be impossible to separate the effects of maternal and paternal age. Worries about aging sperm — or, more accurately, sperm from aging men — are the same as the concerns about aging eggs. The authors actually ran three analyses. You might think that it would be easy to figure out how sperm quality declines by comparing pregnancy rates for the partners of older and younger men.

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Description: The primary issues in the latter category are autism and attention deficit hyperactivity disorder ADHD. First, they looked at the raw data and asked, on average, are children born to older fathers more likely to have ADHD. So more sex may be necessary. Why push so deeply into the statistics here. The authors actually ran three analyses. Last year, the journal JAMA Psychiatry published a study about paternal age that included this design, and, to put it mildly, the results were alarming. Most obviously, we may wonder whether being a child in a fluid family situation could itself have an impact on ADHD risk as other studies have found. The evidence on autism and other behavioral disorders appears less reassuring. They did not all find the same size effect, but virtually all pointed to increased risk of autism with increased paternal age. Obstetricians have a special category for pregnant women over Older men had lower semen volume mean semen volume 1. They found big effects on autism. This fixes a few problems. Studies that do this — here is one nice review in the journal Fertility and Sterility — tend to find that while semen volume and, hence, sperm count does decline with age, there is little overall impact on reproductive success the ability of the sperm to penetrate the egg, fertilize it, etc. So, I challenge any woman in this group not to feel just a teensy bit of schadenfreude at the increasing discussion of aging sperm and its effects on childbearing.
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