Olasupo Odunsi, MD, Medical Director Reviewed July 5, 2026 If you're constantly tired and your metabolism feels stuck, low B12 could be part of the problem
Analyzing US prescription lists with RxNorm and the ATC/DDD Index
10.4161/15592324.2014.990843 Plant Signal
The current results show that number needed to benefit (NNTB) was 207 (95%CI: NNTB 129 to NNTB 620, Follow-up time: 3.48 1.51 years) for total MI, NNTB 67 (95%CI: NNTB 46 to NNTB 135, Follow-up time: 3.48 1.51 years) for MACE, NNTB 170 (95%CI: NNTB 120 to NNTB 306, Follow-up time: 3.48 1.51 years) for cardiovascular mortality, and NNTB 93 (95%CI: NNTB 52 to NNTB 1717, Follow-up time: 3.45 1.21 years) for coronary revascularization
eClinicalMedicine 58 , 101882 (2023)