But dementia experts say such slips, on their own, are no cause for concern. "We've all had them," says Dr. Zaldy Tan, who directs the Memory and Healthy Aging Program at Cedars-Sinai Medical Center in Los Angeles. "It's just that we are not public figures and therefore this is not as noticeable or blown up." Also, memory lapses become more common with age, even in people whose brains are perfectly healthy. The temporary inability to remember names, in particular, "is very common as we get older," says Dr. Sharon Sha, a clinical professor of neurology at Stanford University.