“…However, there is evidence to suggest that vitamin D among people with psychosis is correlated with the season of blood sampling (Belzeaux et al, 2015;Berg et al, 2010;Crews et al, 2013;Grønli et al, 2014;Lally et al, 2016;Zhu et al, 2015) and parathyroid hormone levels (Bergemann et al, 2008;Rey-Sánchez et al, 2009;Schneider et al, 2000), the latter being negatively correlated to vitamin D. What this review highlights are a multitude of variables that have been found to not significantly correlate with vitamin D within the patient population including but not limited to: BMI, age, gender, smoking, duration of illness and GAF score.…”