Conditions associated with elevated B12 levels include: Liver disease : Hepatocellular damage releases stored B12 into circulation, with levels correlating with disease severity in conditions such as cirrhosis, hepatitis, and hepatocellular carcinoma Renal impairment : Reduced kidney function decreases B12 clearance, leading to accumulation Haematological malignancies : Myeloproliferative disorders, acute leukaemia, and polycythaemia vera can elevate B12 through increased production of B12-binding proteins (transcobalamins) Solid tumours : Certain cancers, particularly those affecting the liver or gastrointestinal tract, may elevate B12 levels A specific concern relates to cyanocobalamin in patients with Leber's hereditary optic neuropathy , a rare mitochondrial disorder
We do ask that before booking, you read the information on this page, and if you suspect you have low B12 but its unconfirmed, contact your GP for investigations
Not only did the discomfort resolve, he says, but my joints and tendons felt good
As The New York Times has noted, "imports of hormone and peptide compounds from China roughly doubled to $328 million in the first three quarters of 2025, from $164 million in the same period of 2024," according to U.S