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Grenell, A
When B12 levels fall below normal ranges, the bone marrow produces abnormally large, immature red blood cells called megaloblasts, which cannot function effectively to transport oxygen throughout the body
Energy Recovery from Fatigue: Combats the "brain fog" and physical exhaustion associated with illness by replenishing essential B-vitamins and electrolytes
Authors of the latter study reported further increase of sperm density on subsequent visits, and 2 pregnancies within 3 months
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