The National Sleep Foundation has a page up debunking a few curious myths about sleep.
Myth: Men and women are affected the same way by insomnia.
Fact: Insomnia is nearly twice as common in women than in men, and women are more likely than men to report insomnia to their healthcare professional. A woman’s sleep is uniquely influenced by menstrual cycle, biological life stage, stress level, health, mood, parental status, work hours and other life responsibilities.
Source: The National Sleep Foundation