One 2009 study found that eating 10 grams more cereal fiber per day was associated with a 44 percent lower riskTrusted Source of ovulatory infertility among women older than 32 years.
However, the evidence on fiber is still mixed. Another study of 250 women aged 18 to 44 showed that increasing fiber by 5 g per day decreased hormone concentrationsTrusted Source with a higher probability of anovulation (when ovulation doesn’t take place).
Check with your doctor on your current fiber intake to see if you should be eating more.