We have recently updated our reference page on MTHFR gene polymorphisms.

The MTHFR gene is involved in the production of the methylenetetrahydrofolate reductase (MTHFR) enzyme, which helps the body to break down folate.

People who have MTHFR gene polymorphisms (harmless changes to the gene which are very common) can safely receive vaccines.

The updated reference page reflects up-to-date research showing MTHFR gene polymorphisms do not cause any significant health problems.