Women tend to be less fertile as they get older, but how much, exactly? Math nerd Richie Cotton at 4dpiecharts.comdecided to figure it out with a chart.
Cotton, who is trying to have a baby with his girlfriend, used data from the Journal of Human Reproductie Sciences and Social Fertility to figure out “monthly fecundity rate,” or likelihood of getting pregnant each month if you’re having sex without birth control. A healthy, average woman of 25 has an MFD of 25 percent. MFD decreases to 10 percent for a woman of 35. He then put the data in some formulas to plot out the chart.
According to the chart, after two years, nearly all 25-year-old women will get pregnant. The older women get, the less steep their dotted lines get. In other words, the graph visualized what we already knew: It takes longer for older women to get pregnant.
Personally, I think he’s a bit optimistic about the 30 and 35 year olds, as from what I’ve heard, fertility drops off precipitously at 30. But it does show that it’s harder, anyway, and forget after 35…