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doi: 10.1016/j.phytochem.2014.10.019

Vitamin B12 deficiency often leads to nervous system damage that damages the optic nerve leading to your eyes

COVID-19 patients often have hypoxemia and tissue hypoxia, and the oxygenated hemoglobin saturation of the brain tissue is also significantly reduced (48)

Oncogene 33 , 19121921 (2014)
