Additionally, researchers often utilize standardized materials to support organized workflows and repeatable evaluation procedures
Specifically, eligible studies included participants (P) with a confirmed diagnosis of vitamin B12 deficiency, interventions (I) involving oral or sublingual vitamin B12 administration, comparators (C) using intramuscular supplementation, and outcomes (O) reporting changes in serum vitamin B12 or homocysteine levels
The most common side effects are gastrointestinal: nausea, diarrhea, constipation, and reduced appetite
Improved circulation may, in turn, speed up the recovery process and support overall tissue health
male factor infertility accounts for about 30% of cases