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These processes include DNA synthesis, red blood cell formation, energy production, nerve cell health, and general neurological function
The takeaway is that B12 injections are usually considered very safe, and side effects are uncommon when used appropriately
Importantly, if you have unexpectedly high B12 levels without taking supplements or receiving injections, this warrants GP review as it may indicate underlying liver disease, kidney disease, or certain blood disorders
B12 is involved in metabolism and energy production, so if a deficiency is contributing to low energy and making it hard to exercise, injections might indirectly support weight loss efforts by boosting energy
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