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(PubMed) McEvoy CT, Schilling D, Clay N, et al

A 2018 study published in The American Journal of Clinical Nutrition shows that without enough magnesium, vitamin D synthesis and metabolism in the body is impaired

Hematological Polycythemia vera

Vitamin B12 injections deliver a concentrated dose of this essential nutrient directly into your bloodstream, bypassing the digestive system for faster absorption

The American Academy of Family Physicians and NIH identify the following clinical manifestations: Fatigue and generalized weakness Megaloblastic anemia (abnormally large, immature red blood cells) Tingling or numbness in the hands and feet (peripheral neuropathy) Difficulty walking and balance problems Cognitive disturbances including memory difficulty and confusion Mood changes, including depression and irritability Glossitis (swollen, inflamed tongue) Early symptoms such as fatigue and mild tingling are often attributed to stress, aging, or other conditions