Genetic Polymorphism
These polymorphisms interfere with vitamin D absorption, conversion, receptor binding, or downstream signaling. People with autoimmune disorders commonly have genetic polymorphisms affecting up to nine genes required for proper vitamin D f…
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These polymorphisms interfere with vitamin D absorption, conversion, receptor binding, or downstream signaling. People with autoimmune disorders commonly have genetic polymorphisms affecting up to nine genes required for proper vitamin D function. Autoimmune patients face a double deficit of insufficient vitamin D input and impaired utilization. Certain genetic variants impair the gene responsible for vitamin D absorption, causing persistent deficiency that requires larger-than-normal doses to overcome. The 23andMe genetic test can identify whether a person carries variants that create genetic weaknesses in vitamin D metabolism.