The FucosylTransferase 2 (FUT2) gene is associated with the synthesis of fucosyl transferase 2, an enzyme found to attach the bacterium Helicobacter pylori to the gastric mucosa, which affects the absorption of vitamin B12 in the gut. People with the A variant of the gene have been shown to be associated with an increased secretion of FUT2 enzyme which increases the susceptibility of attachment of the Helicobacter pylori.
Vitamin B12 is also called cobalamin, and is absorbed from dietary sources or is synthesized by gut microbes. Vitamin B12 is necessary for the synthesis of red blood cells, myelin nerve sheath maintenance and in the synthesis of DNA.
Deficiency of vitamin B12 is associated with
The symptoms of vitamin B12 deficiency are fatigue, tingling sensation in the hands and feet, weakness, numbness and bloating.
In a study conducted on 1146 Indians, people with the G variants who were on a vegetarian diet were found to have significantly lower level of vitamin B12 when compared with people with the A variant.
In another study conducted on nearly 3000 people, people with the A variant of the gene were shown to have 44.2 pg/mL higher concentrations of vitamin B12.
How can this information be used?
It is important to choose an appropriate diet based on the genetic profile
For people with G variant (Decrease in plasma Vitamin B12 level)
For people with A variant (Normal plasma Vitamin B12 level)
“Nutrigenetics, fitness genetics, health genetics are all nascent but rapidly growing areas within human genetics. The information provided herein is based on preliminary scientific studies and it is to be read and understood in that context.”