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Infertility has many causes that involve either the woman's, the man's, or both partners' reproductive systems. Some causes include:
Rates of infertility and miscarriage increase with age. A woman's fertility peaks in her late 20s and gradually begins to decline in her early 30s. A more pronounced drop in fertility and increase in miscarriage risk begins around her mid-30s, primarily due to the aging egg supply. Male fertility also decreases with age, but it is a more gradual decline than in women.
| By: | Healthwise Staff | Last Revised: April 23, 2010 |
| Medical Review: | Sarah Marshall, MD - Family Medicine Femi Olatunbosun, MB, FRCSC - Obstetrics and Gynecology | |
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