The primary symptom of alopecia areata is sudden hair loss, which typically occurs in small, round patches on the scalp, beard, or other body areas
Two separate human clinical trials (ulcerative colitis and multiple sclerosis) proceeded without significant adverse event reporting
Doctors may recommend vitamin B12 supplements if you have certain health conditions or dietary restrictions
Intake of specific carotenoids and risk of lung cancer in 2 prospective US cohorts
Petrasek J, Bala S, Csak T, Lippai D, Kodys K, Menashy V, et al
While you can get B12 from food, some people have a tough time absorbing it through their diet