Couples looking to conceive may first have to start in the dentist’s chair, Fox News reported.

Data shows that it takes a woman an average of five months to get pregnant after they begin trying, but if the woman has severe gum disease, the average time to conception increases to seven months — the same average time it takes an obese woman to get pregnant.

Watch the explanation, originally aired on Fox News July 5, 2011, embedded via Fox News, below.