B12 deficiency is quite common in both the US and UK, affecting around 6% of people aged under 60, and nearly 20% of those 60 and over
The ratio of Firmicutes to Bacteroidetes is a commonly-studied change with an increase often linked to HFD consumption/obesity in mice 43,44 and humans 45,46 (for review, see John and Mullin, 2016 47 )
its increasingly popular among women seeking anti-aging benefits
For individuals requiring supplementation due to confirmed deficiency or malabsorption, therapeutic doses vary considerably depending on the underlying cause: Dietary deficiency : 50150 micrograms daily orally, or cyanocobalamin tablets as prescribed Pernicious anaemia : Initially hydroxocobalamin 1 mg intramuscularly three times weekly for two weeks, then maintenance injections every two to three months [3] Neurological involvement : More intensive regimens may be required, with hydroxocobalamin injections on alternate days until symptom improvement [3] NICE guidance emphasises that supplementation should be evidence-based rather than speculative
Vitamin B12 is essential for keeping your central nervous system healthy, making red blood cells, and creating DNA
