weekly b12 injections at home Vitamin Supplements and in Orlando FL (The National Institutes of Health) Aging can make it more difficult for the body to break down and absorb B12 Vitamin B12 Injections: Ideal Dosage
Description
By supporting the creation of healthy red blood cells, injections directly combat anemia and improve oxygen delivery throughout the body

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doi: 10.1016/s0092-8674(00)81865-6

Weight Fluctuations: Low Body Weight: Being significantly underweight (e.g., due to eating disorders like anorexia or bulimia, or intense athletic training) can disrupt hormonal signals necessary for menstruation