Birth control effectiveness is calculated in a manner that’s not intuitive If a contraceptive method is 90 percent effective, some people believe they it fails 10 percent of the time, that they’re fated to get…

You may not be as healthy as you used to be or as you’d like to be. You may have a chronic condition—arthritis, diabetes, heart disease, etc. You may have disabilities. But when it comes…

This is the weird, improbable story of vaginal orgasms. More than a century ago, a famous physician postulated their existence. Sixty years later, the first scientific sex researchers declared them nonsense. Finally, over the past…

A key reason older women pursue relationships with younger men— better sex. Relationships involving older women (cougars) and significantly younger men (cubs) went mainstream in 2009 with the premiere of the TV show “Cougar Town.”…