b12 injections and dementia Deficiency of vitamin its relation with neurological disorders: a critical review | The Journal of Basic and Applied Zoology Vitamin B12 Deficiency: Causes, Symptoms,

Brain Function: These vitamins support healthy nerve tissue, cognitive function, memory, and concentration

PMID: 27304506

Cell culture studies using adipocytes have shown that NNMT overexpression promotes lipid accumulation and insulin resistance, while NNMT knockdown or inhibition increases NAD+ levels, activates SIRT1, enhances mitochondrial respiration, promotes expression of thermogenic genes including UCP1, and drives white adipocyte browning toward a beige phenotype

As you can see, Vitamin B12 is one of those 8 B Vitamins typically in a B-Complex, but also available as a standalone supplement

Be patient, your hairs health reflects whats happening inside your body, and it takes time for follicles to respond

If you are doing the injection yourself, wash your hands with warm water and antibacterial soap