For millions of women in America, sex isn't always pleasurable or even possible. Instead, sex has become a low priority as they navigate marriage, motherhood, and work . . . not to mention cope with chronic stress and lack of sleep. Throw in the natural fluctuations in hormone levels that all women experience throughout their lives and it's not surprising that sex can become, well, a little less sexy. Additionally, common gynecological problems can make sex uncomfortable, and medical issues can cause it to be downright painful.

Dr. Lauren Streicher, a leading women's sexual health...