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Why Vitamin B12 Is Important Though it may take years for deficiency to develop in those starting out with adequate stores of vitamin B12, the results of B12 deficiency may include a magnitude of devastating physical and psychiatric symptoms, including death

Steve Horvath, a gram a day slowed several DNA methylation clocks of biological aging over three years, around three to four months across the clocks, with an added benefit when combined with vitamin D and exercise

Wearable sleep trackers provide objective data on sleep stages, though their accuracy varies by device and metric

Cyanocobalamin must first be converted to hydroxocobalamin, then to either methylcobalamin or adenosylcobalamin depending on tissue needs