An estimated 10-12 million people in the U.S. alone suffer from Seasonal Affective Disorder (SAD), while about 25 million Americans suffer from the "winter blues," a condition not as serious as SAD but still requiring attention.

As sunlight deficiency is a key factor in SAD and the winter blues, both are particularly prevalent in the winter months, though especially those who live in regions of the U.S. and world where overcast days are common can experience the conditions at any time of year.

This test below will help you determine your likelihood of having SAD or the winter blues. You will automatically receive your results at the conclusion of the test, and you will be pointed in the direction of further information and (depending on your outcome) highly recommended solutions that you should seriously consider.