Multiple sclerosis (MS) is not purely hereditary, but there is a genetic component to the disease. Research suggests that there are certain genetic variations that increase a person’s risk of developing MS, but having these variations does not mean that a person will definitely develop the disease.
MS is considered a complex disease, meaning that it is likely caused by a combination of genetic and environmental factors. Some studies suggest that certain environmental factors, such as infections or exposure to certain toxins, may trigger the disease in people who are genetically predisposed to it.
While having a family member with MS does increase a person’s risk of developing the disease, the overall risk is still relatively low. According to the National Multiple Sclerosis Society, the risk of developing MS is about 1 in 750 for the general population, but it increases to about 1 in 40 for people who have a first-degree relative (parent, sibling, or child) with the disease.
