With respect to mood,
- the serotonergic pathway would predict that,
- in people who have insufficient levels of vitamin D,
- mood may improve when serum 25(OH)D increases as this may increase the availability of serotonin in the brain via TPH2 expression.
study indicates direct link between vitamin D levels and mental health is so strong that adding just 1,000 IU of vitamin D per day can reduce: Fatigue.
Feelings of Depression or Anxiety.