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Cell Commun Signal 23 , 46 (2025)

Smaller nanoparticles (typically less than 100 nm) are more likely to pass through the BBB because they are more easily taken up by brain endothelial cells (Nowak et al., 2020)

Signs of this may include the following symptoms: tingling, feeling cold in the hands and feet, weakness and rapid fatigue, and difficulty concentrating
Samira Meymand and Rand McClain, for providing both a clinical and service member perspective

No, simple fatty liver disease does not directly cause vitamin B12 deficiency, as the liver typically maintains its B12 storage capacity in early stages
