The best needle for B12 injection into fat tissue would be within the 4-5 mm size range, combined with a gauge of 30G or higher
First-line obesity treatments include lifestyle intervention (e.g., low-calorie diets) and behavioral modification therapies 4,5 since approved obesity medications have limited efficacy and commonly have side effects 6
By administering a vitamin B12 shot, individuals with a deficiency can significantly improve their energy levels
Excluded were those mothers who anticipated moving out of the area before study completion, who had twin or multiple pregnancies, who were treated for infertility, who tested positive for hepatitis B (hepatitis B surface antigen), HIV, or syphilis (Venereal Disease Research Laboratory test) infections, or who were taking daily vitamin supplements in addition to folic acid and iron
It depends on their health, lab results, and how they respond to treatment
For hair-specific goals, AHK-Cu may be slightly more targeted