Sick all the time
Suffering from the fourth or fifth virus this year, it may be because a lack of vitamin D, causing the immune system to work poorly.
Cells in the immune system are actually able to synthesize when exposed to vitamin D.
People with autoimmune diseases could be treated with vitamin D.
Next time cold and flu season comes around everyone should make sure they prepped with lots of vitamin D in the body.
Feeling of sadness
Depression is no joke, many people who struggle with depression experience a lack of appetite, fatigue, and in some cases actual physical pain.
You should always consult your doctor before downing any kind of vitamin supplements.