SAD, commonly known as Seasonal Affective Disorder, usually causes depression during the winter months, when the days are shorter and we have less exposure to daylight and sunlight. SAD occurs with the changing of the seasons and you will be affected by it at roughly the same time every year.
Serotonin is a naturally produced mood stabiliser and if levels drop, this can create feelings of depression, anxiety and irritability. You may also eat more and gain weight.
If you think you may be suffering from SAD, then speak to your GP to find the best treatment for you and to get a correct diagnosis. There’s information on other mental health illnesses on our site.