Yes, due to inadequate consumption, vegetarians and vegans are at risk of Vitamin B12 deficiency
(PubMed) Lee SH, Oe T, Blair IA
Notably, increased NAD+ levels also activate NAD+dependent signaling pathways such as sirtuins (SIRT1/SIRT3), further enhancing mitochondrial biogenesis and energy metabolism
When To Take Vitamin B12 (The Best Time of Day)
Insurance coverage for B12 injections can vary greatlysome insurers may cover the injections if deemed medically necessary, such as for diagnosed deficiencies or associated conditions, while others classify these injections as elective and may not provide coverage
Injections may be scheduled weekly or monthly depending on need