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Older adults Vitamin B12 deficiency is Vegetarians and vegans Vitamin B12 mainly occurs in animal foods, so people who follow a plant-based diet have a In some cases, a doctor may recommend injections, but Vegetarians or vegans who are pregnant may If the infant is entirely breastfed, they may not consume enough vitamin B12
This minimizes discomfort and is ideal for both subcutaneous and intramuscular injections of small volumes
Routine labs may look normal even when local gut, skin, or connective-tissue symptoms remain
What symptoms indicate a Vitamin B12 deficiency
Apr 29, 2026 6 min read Anti-Aging How Do Vitamin B12 Transport Proteins Regulate Cellular Distribution in Biological Systems
