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Abstract Selenium is an element that plays a crucial role in the proper functioning of the body

In all of these cases, a thorough medical evaluation is essential before any B12 supplementation

Arthritis is the most common cause of Spinal Stenosis, as it causes facet joints to expand, leaving little room for nerve roots

Factors such as temperature, pH, light exposure, and the presence of other compounds can affect the potency of B12 in supplements

Ethics declaration All methods were performed in accordance with the relevant guidelines and regulations of the Ethical Committee for Medical Research of the National Research Centre in Egypt with approval number 01460124