Sunlight regulates much of our bodily functions: sleeping patterns, moods, immune system, stress levels and resulting blood pressure.

What happens when there is not enough sunlight entering our eyes? The body becomes tired and lethargic. Growth in children is affected and our immune systems become compromised. It can even affect our mood swings.

For people living in the northern hemisphere, this can be a problem during long winter months when there are shorter daylight hours. Many people, especially women, may experience the inter blues,?a condition stemming from Seasonal Affective Disorder (SAD for short), exhibiting symptoms of lethargy, drowsiness, irritability, food binges, loss of sexual drive, social withdrawal, mood swings, and depression.