If you are trying to get pregnant, it's important to know how age impacts fertility. Younger and healthier women have the highest fertility rates, around an 85% success rate.Fertility rates decrease 11% by age 34, 33% by age 40 and 87% by age 45. Today we have with us Dr. Bradley Klebs, an Allina Health OB/GYN, to talk about how fertility differs by age and tips to improve fertility at each age.