Summary
In a double-blind, placebo-controlled clinical trial involving patients with coronary heart disease, a Norwegian team of doctors showed that micronutrient supplementation with folic acid (vitamin B9) and vitamin B12 had a positive effect on the blood supply to the coronary arteries. During the study period of two years, both basic and maximum blood flow in the coronary arteries were significantly improved by this micronutrient supplementation. Further details can be found in the study.
References
Hao Wang, Éilis J O’Reilly, Marc G Weisskopf, Giancarlo Logroscino, Marjorie L McCullough, Arthur Schatzkin, Laurence N Kolonel, Alberto Ascherio