Low levels of vitamin D have been associated with low mood and behavioral difficulties in children, and psychological difficulties, such as feelings of anxiety, in adults
Probiotics are live microorganisms with health benefits, or more of the 'good bacteria'
Genetics: Genetic variants in the genes involved in vitamin B6 absorption and conversion can also increase susceptibility to having low vitamin B6 levels
It metabolizes toxins, plays a vital role in sperm production and maturation, mounts an immune response to pathogens, and neutralizes free radicals implicated in skin aging, abnormal pigmentation, and diseases such as cancer, Alzheimers, and Parkinsons
One article proposed that excessive serotonin levels could explain classic symptoms of ME/CFS (433), as it would promote the release of excess CRH, and therefore cause chronic reactivation of the HPA axis (434)
PubMed Central , Accessed 11 Dec