Feelings of Sadness
According to a study conducted by the American Journal of Geriatric Psychiatry, participants who were found to have the lowest levels of the vitamin were 11 times more likely to suffer from depression. Your exposure to the sun or lack of it directly reflects the production of serotonin in your body. This hormone can be found in the brain and is associated with mood elevation. With less exposure to light, there is a chance that you are more likely to feel sad.