This led to significantly reduced HbA1C and diastolic blood pressure (Fukino 2008)
Working closely with a healthcare provider for accurate testing and diagnosis isn't just a stepit's a partnership in your journey toward better health
Preliminary clinical data and lab work suggest advantages for fertility, uterine recovery, and ovarian support, though large trials are still sparse

A physician investigating unexplained hypercobalaminemia will typically order some combination of the following: Complete blood count (CBC) with differential to check for abnormal red blood cell, white blood cell, or platelet counts Liver function tests (ALT, AST, ALP, bilirubin, albumin) to assess liver health Kidney function tests (creatinine, BUN, estimated GFR) to evaluate renal clearance Peripheral blood smear if a myeloproliferative disorder is suspected Abdominal imaging (ultrasound or CT) if liver or abdominal pathology is a concern Cancer-specific markers or screenings if clinical suspicion warrants them The NIH Office of Dietary Supplements fact sheet notes that observational data from a Danish registry analysis of 757,185 people found the adjusted 1-year cancer risk was 1.74 to 4.72 times higher among those with B12 above 813 pg/mL compared to those in the normal range of 203 to 813 pg/mL

Limited Clinical Safety Data : The human safety profile remains unclear because the evidence is primarily based on animal and laboratory studies rather than large-scale clinical trials
But as is usually the case, there is no magic pill for reaching your fitness goals: In isolation without diet and intensive exercise, the data suggest limited efficacy