Other groups who may benefit include: Patients following gastric surgery (gastrectomy, bariatric procedures) where intrinsic factor production or absorption sites are compromised Individuals with malabsorption disorders such as Crohn's disease, coeliac disease, or chronic pancreatitis Strict vegans and vegetarians with dietary insufficiency, though oral supplementation is usually tried first Elderly patients with atrophic gastritis or reduced gastric acid production Patients on long-term metformin or proton pump inhibitors, which can impair B12 absorption [6] [8] Individuals with nitrous oxide exposure (recreational or medical), which can cause functional B12 deficiency Diagnosis typically involves serum B12 measurement, with levels below approximately 148 pmol/L (though thresholds vary between laboratories) generally indicating deficiency
That's why he says it's buyer beware with methylene blue, and similar products "The internet is a big place," he told NPR
Vitamin B12 injections are said to be effective at increasing blood levels of B12, preventing or reversing deficiency of the same
Doctors frequently recommend Methycobal for its reliable results and high-quality formulation
The reality is far less dramaticand far more interesting
I have bought red (light strength) flex bar and gave eccentric loading another try