In short, yes. In fact, step 6 of the program is Preventing Family Members from getting MS.
It will be easier for you to get others on board with your lifestyle changes and there is also an increased MS risk for people with a close relative who has MS. By making lifestyle changes, this risk can be reduced.
The areas of particular importance are; stopping smoking, eat a healthier diet and getting enough vitamin D through sunlight or supplementation. Vitamin D supplementation should start before birth – therefore vitamin D supplementation in pregnancy is imperative.
Diet for family members does not need to be strict– but consider encouraging a largely wholefood diet, with more plants and fish and less meat and dairy, and keep away from processed food.
We also encourage family members to take on elements of the program as they offer additional health benefits.
Note: Vitamin D supplementation recommendations are lower for people who haven’t got MS (5,000 IU a day supplement in winter)