b12 injection location on body Best Vitamin Site: Administering B12 Shots How to Use These 4

But there are also many other signs including fatigue, weight loss, lack of appetite, and dehydration

Other common reasons are a local injection-site reaction, your body adjusting to corrected levels, and an underlying deficiency that was more severe than expected

Okada K, et al

They have also been known to increase concentration, memory, and energy levels, support weight loss by improving metabolism, help boost the immune system, have been shown to improve sleep and can help stop some types of hair loss

Therefore, having sufficient vitamin B12 in your diet is necessary for the healthy growth and production of hair due to vitamin B12's role in better hair growth and stronger hair strands and follicles