Molecules , 19(11), 19066-19077
Premature aging Vitamin B12 plays a role in skin cell regeneration, helping maintain healthy skin
Older adults, vegetarians, vegans, people with digestive disorders, and anyone experiencing low energy
Fatigue and brain fog become unmistakable below 30 ng/mL
Minimizing Methylmalonic Acid Levels A potential problem with the IOMs method for determining B12 requirements (see Institute of Medicines Recommendations above), is that a small percentage of people with neurological symptoms of B12 deficiency have normal blood parameters, including 13% of patients in one series of case studies (Lindenbaum, 1988)
This condition, called megaloblastic anemia, devastates endurance performance even in its mild forms