Sperm in older men

Evidence-based guidance. Personal stories that matter. Sign up now to get NYT Parenting in your inbox every week. People are becoming parents at ever-increasing ages, a trend that can have implications for the health of the pregnancy, the babies and the women who birth them. But while most women know that reproductive risks to themselves and their babies rise as they get older, few men past 40 realize that their advancing years may also confer a risk. Since the s the percentage of births to fathers aged 40 or older in this country has doubled, and by they accounted for 9 percent of births.
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Aging changes in the male reproductive system

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The Risks of Fathering a Child As You Age | Men's Health

Sperm donation is a procedure in which a man donates semen — the fluid containing sperm that is released during ejaculation — to help an individual or a couple conceive a baby. Donated sperm can be injected into a woman's reproductive organs intrauterine insemination or used to fertilize mature eggs in a lab in vitro fertilization. The use of donated sperm is known as third-party reproduction. A man who makes a sperm donation can be known or anonymous to the recipient. Sperm donations made to a known recipient are called directed donations. Before you can donate sperm, you must be screened for medical conditions and other risk factors. It's also important to understand the possible emotional, psychological and legal issues of sperm donation.
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Vitamins May Improve Sperm for Older Men

Background: Declining fertility of couples from the fourth decade of life is largely attributable to the drop in female fertility. However, increasing numbers of men, whose fertility theoretically lasts until death, are seeking fertility treatment at older ages, yet there is little information on sperm production and function past the age of 50 years. The few studies of such older men have examined men attending fertility clinics, and therefore willing to provide semen samples, but the participation bias of such recruitment hinders extrapolation to the unselected general male population. Methods: We have taken the opportunity to study a convenience sample of 55 healthy, non-infertile men ranging in age from 52 to 79 years old who provided semen samples as part of a prostate cancer screening project. Results: Older men had lower semen volume mean semen volume 1.
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The paternal age effect is the statistical relationship between the father's age at conception and biological effects on the child. The genetic quality of sperm, as well as its volume and motility, all may decrease with age, [4] [5] leading the population geneticist James F. Crow to claim that the "greatest mutational health hazard to the human genome is fertile older males". The paternal age effect was first proposed implicitly by German physician Wilhelm Weinberg in [7] and explicitly by British psychiatrist Lionel Penrose in
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