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[121] Age is also a contributing factor: elderly individuals are often achlorhydric due to reduced parietal cell function in the stomach, increasing their risk of vitamin B 12 deficiency
Research indicates that methylcobalamin can modulate melatonin secretion, enhance light-sensitivity, and normalise circadian rhythm (your body's 24-hour clock)
There is no downtime, and normal activities such as work, exercise, or travel can continue without interruption
Oral supplements might not work, so injections or sublingual tablets are better
& Gordon, J
Br J Clin Pharmacol 45: 83-86
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