According to a Coventry University study of 6,800 men and women ages 50-89, those who were sexually active performed better on memory tests than those who were not. Subjects were given two tests. One was a memory test in which people were asked to remember a list of 10 common words immediately after hearing them, and then again following a brief delay. Another was a test for executive function in which subjects had to identify the missing number from a numerical sequence.
Women who reported having had sex in the last year performed better on memory tests than their abstaining counterparts; whereas, men performed better on both tests.