Guide | Older Fathers and Reproductive Risks: New Research Findings
Growing research suggests that a man's age may affect both fertility and the health of his children, challenging the longstanding view that the reproductive “biological clock” applies only to women.
Age and the Risk of Birth Defects
Columbia University researchers found associations between paternal age and birth defects and developmental conditions such as autism and Apert syndrome, as well as psychiatric conditions such as schizophrenia. In a study of about 90,000 births, the older the man, the greater his partner's likelihood of miscarriage, even when she was young, healthy, and had no other risk factors.
Experts believe these findings may be only the beginning. Dr. Jeremy Silverman, professor of psychiatry at Mount Sinai Medical Center in New York City, said current knowledge is limited, particularly because the effects of paternal age are not yet fully understood.
Physiological Changes in Older Fathers
Male reproductive organs also change with age. Research shows that aging is associated with lower testosterone, dehydroepiandrosterone (DHEA), and estrogen, and higher follicle-stimulating hormone (FSH) and luteinizing hormone (LH), indicating reduced reproductive function.
A French study found that older paternal age increased the risk of pregnancy failure even among couples using in vitro fertilization (IVF). Although men can produce new sperm throughout life, sperm quality declines with age and genetic abnormalities become more common.
Lifestyle and Sperm Health
In addition to natural aging, smoking, alcohol, drug use, and radiation exposure may adversely affect male fertility and sperm health. Oxidative damage may increase chromosomal damage in sperm, particularly in older men.
Protecting Sperm Health
Experts suggest avoiding steroids, managing blood pressure, limiting alcohol, performing appropriate cardiovascular exercise, avoiding excessive heat such as hot tubs and saunas, and avoiding heavy metals and toxic chemicals.
Research into paternal age and fertility continues, but current findings indicate that men should consider age when planning a family and take appropriate steps to support reproductive health.
Guide | Older Fathers and Reproductive Risks: New Research Findings
Guide | Older Fathers and Reproductive Risks: New Research Findings
Growing research suggests that a man's age may affect both fertility and the health of his children, challenging the longstanding view that the reproductive “biological clock” applies only to women.
Age and the Risk of Birth Defects
Columbia University researchers found associations between paternal age and birth defects and developmental conditions such as autism and Apert syndrome, as well as psychiatric conditions such as schizophrenia. In a study of about 90,000 births, the older the man, the greater his partner's likelihood of miscarriage, even when she was young, healthy, and had no other risk factors.
Experts believe these findings may be only the beginning. Dr. Jeremy Silverman, professor of psychiatry at Mount Sinai Medical Center in New York City, said current knowledge is limited, particularly because the effects of paternal age are not yet fully understood.
Physiological Changes in Older Fathers
Male reproductive organs also change with age. Research shows that aging is associated with lower testosterone, dehydroepiandrosterone (DHEA), and estrogen, and higher follicle-stimulating hormone (FSH) and luteinizing hormone (LH), indicating reduced reproductive function.
A French study found that older paternal age increased the risk of pregnancy failure even among couples using in vitro fertilization (IVF). Although men can produce new sperm throughout life, sperm quality declines with age and genetic abnormalities become more common.
Lifestyle and Sperm Health
In addition to natural aging, smoking, alcohol, drug use, and radiation exposure may adversely affect male fertility and sperm health. Oxidative damage may increase chromosomal damage in sperm, particularly in older men.
Protecting Sperm Health
Experts suggest avoiding steroids, managing blood pressure, limiting alcohol, performing appropriate cardiovascular exercise, avoiding excessive heat such as hot tubs and saunas, and avoiding heavy metals and toxic chemicals.
Research into paternal age and fertility continues, but current findings indicate that men should consider age when planning a family and take appropriate steps to support reproductive health.
Source:
Collected online