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The 2025 Kuceki study demonstrated 26.5% hair regrowth with this combination approach

Neurologic complications are not always associated with megaloblastic anemia and are the only clinical symptom of vitamin B 12 deficiency in about 25% of cases (21)

Funding This work was supported by grants from the National Natural Science Foundation of China (No.82271847)

Most symptoms of Vitamin B12 deficiency can be reversed with supplementation, but if a deficiency goes on for too long, it can cause permanent neurological damage

Low-BMI, sub-160 lb, older, or side-effect-sensitive non-micro users often start at 0.3 mg, with the band still building to at least 1 mg before response is judged