In Alzheimers disease, excessive ROS production inhibits autophagic function, resulting in the accumulation of neurotoxic proteins
Supporting Study: Veljaca, M., et al
Due to the fact that changes in calcitriol levels alter plasma calcium and PTH levels it is not clear what the exact mode of action is for calcitriol relative to renal phosphate retention
However, a multicenter study in 5,485 subjects with cardiovascular disease or diabetes mellitus showed that daily supplementation with folic acid (2.5 mg), vitamin B 12 (1 mg), and vitamin B6 (50 mg) lowered homocysteine concentrations but had no effect on fracture risk compared to placebo (118)
DSIP Clinical Evidence Context Human evidence A handful of small placebo-controlled studies in chronic insomniacs from 1981-1987 reported modest improvements in total sleep time, sleep efficiency, and daytime function