Vitamin D is an important vitamin, and it can have serious effects on the body if we don’t get enough.
One of the main sources of vitamin D is UVB sunlight exposure on the skin.
And not getting enough vitamin D can lead to a host of problems, including muscle weakness and fatigue.
Therefore, someone who lives a sedentary “indoor” life will be more at risk at developing vitamin D deficiency.
Lack of sunlight can affect the production of serotonin, but also the production of melatonin – the hormone which makes you feel sleepy.
For those who have SAD, the body may produce it in higher levels than normal.
Other symptoms of SAD, in addition to low mood, includes loss of interest in normal activities, irritability, feelings of despair, guilt and worthlessness and sleeping longer than usual.
The NHS recommends to consider seeing your GP if you think you might have SAD and you’re struggling to cope.
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