doi:10.3945/an.117.015628
Clinicians estimate vitamin B12 requirements using values such as: Recommended dietary allowance (RDA): RDArefers Trusted Source National Institutes of Health Office of Dietary Supplements Go to sourceto a daily intake that, on average, is enough to meet the nutritional requirements of almost all people without underlying health conditions
Clinicians may monitor complete blood counts, vitamin B12 levels, methylmalonic acid, homocysteine, potassium, or other markers depending on the situation
Supporting cancer therapy Studies show that NNMT can affect cancer development and growth
Full effects build as your body stores more B12 and uses it efficiently
When you lack B12, your red blood cells become malformed, and the oxygen delivery is compromised, making you feel tired