B vitamin therapy for homocysteine: renal function and vitamin B12 determine cardiovascular outcomes
Vitamin B12 Enhances Healthy Cells in Nails, Hair, and Skin Vitamin B12 is essential for healthy cell formation, and a deficiency can lead to a variety of dermatological problems like hyperpigmentation, nail discoloration, and irritated and cracked corners of your mouth
It also supports healthier skin, nails, hair, and even eyes
The lipotropic effect of protein. Nature 135.3420 (1935): 821-822
However, I have it on good authority that this is your body adapting and improving your cardiovascular fitness The second side effect is arguably a positive benefit, as it can help someone who struggles with exercise get to the point where it easily becomes a daily habit almost like exercise in a pill