Statistics indicate seasonal affective disorder (SAD) may affect as many as 6 out of every 100 people. Anywhere from 70 to 80 percent of people with SAD are women. Symptoms can range from the winter blues to serious depression. The onset for SAD usually begins in fall each year, and symptoms may start to dissipate as spring starts. However, some people have the opposite pattern of seasonal depression with symptoms occurring in the spring and summer.

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