In the U.S., 7 to 10 percent of the population suffer from winter depression.

Symptoms of SAD are a little different from depression.

When symptoms clearly begin to interfere with daily functions, students who are having trouble going to class and getting assignments done, they need some coping methods - counseling can help with that.

The light box is the preferred treatment. Not any light will do; certain studies show that a specific intensity is needed.

Exercise, eating right, and adhering to a schedule helps.

All this homework should be done before the vaccine is recommended for use in any population, not after.