We all know that as a woman ages, her fertility declines. Â Weâ€™ve be told that a young woman (around age 25) has approximately a 25% chance of conceiving each cycle and that that rate decreases as she ages.
By the age of 35, a woman has only a 10% chance of conceiving each cycle. Â As you can imagine, a woman over the age of 40 faces even longer odds.
For people who learn better from pictures, Cottonâ€™s graph allows us to view the relative effect of age on fertility.
The most obvious observation is how the fertility lines flatten out over time, signalling a decrease in fertility.