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However, recent clinical evidence suggests the picture is more nuanced than previously understood
National Library of Medicine: Indeed, DNA synthesis is impaired by low vitamin B12, which hampers the activation of folate and, as a result, decreases normal red blood cell production, impairing oxygen delivery [62] WebMD indicates, if you have vitamin B12 deficiency, you could become anemic
Quad/thigh injection site (intramuscular) If you struggle to inject into your glute because of mobility issues or other reasons, your quads (the leg muscles at the front of your thigh) can work really well
Not having enough functioning red blood cells to carry oxygen through the body will leave you feeling tired and weak as a result
