Vivus, aiming at surgically menopausal women, found a 64% increase in "satisfying" sexual activity in a small trial of premenopausal women (placebo was 42%) and is now launching a larger late-stage test in postmenopausal women.

FORBES: Health

Unlike the male condom, the effectiveness of the Pill was not linked to use during sexual activity, giving women unprecedented sexual freedom and control over their fertility.

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"This study underscores the enduring importance of sex among older men and women, even among these who report infrequent sexual activity, " said Neal Cutler, NCOA's director of survey research.

CNN: Sex after 60: You betcha, survey says