In some cases, the swelling may be accompanied by warmth or redness around the knee, indicating inflammation
10.1186/s13024-023-00595-7 73 CharneyD
The main causes of a vitamin B12 deficiency are as follows: Malabsorption due to poor intestinal health (inflammation, bacteria, fungal infection, parasites, disturbed intestinal flora) due to a lack of transport molecules (intrinsic factor), genetic diseases (cobalamin disease) or medications that hinder uptake
Eliminate some or all of these and keep a food diary to track the results and identify which of them is causing problems
moreover, no significant within-/between-group disparities were noted for the stated factors, even after adjustment for baseline values or other potential confounders