This week the American College of Obstetricians and Gynecologists released an opinion saying that women’s ability to have babies decreases gradually but significantly beginning around age 32 and then goes down more rapidly after age 37. The younger estimate may come as a shock to women who have long been conditioned that 35 is the “I’ve got to deal with this!” age and that 40 is the cut-off for either freezing your eggs or giving your on-the-fence man an ultimatum.