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Vitamin B12 is found in animal products such as meats, fish, dairy products and eggs. Vitamin D is found in fortified milk and cereals, but your body can make most of the vitamin D you need when your skin is exposed to sunlight. Both vitamins can be taken as dietary supplements as well.
There is some evidence that reducing saturated fats and increasing polyunsaturated fatty acids may be of some benefit to people with multiple sclerosis. You can do this by eating more fish, lean poultry, fruits and vegetables and less fatty red meat, processed lunch meats, bacon and sausages. Be sure to eat at least five servings of fruits and vegetables every day and choose whole grains whenever possible.
Sources:
National Multiple Sclerosis Society. "Nutrition and Diet."
Weinstock-Guttman B, Baier M, Park Y, Feichter J, Lee-Kwen P, Gallagher E, Venkatraman J, Meksawan K, Deineher, S, Pendergast D, Awad AB, Ramanathan M, Munschauer F, Rudick R. "Low fat dietary intervention with omega-3 fatty acid supplementation in multiple sclerosis patients." Prostaglandins, Leukotrienes and Essential Fatty Acids
Volume 73, Issue 5 , November 2005, Pages 397-404. Miller A, Korem M, Almog R, Galboiz Y. "Vitamin B12, demyelination, remyelination and repair in multiple sclerosis." Journal of the Neurological Sciences Volume 233, Issues 1-2 , 15 June 2005, Pages 93-97.
Lauer K. "Sausage Preservation Methods and the Prevalence of Multiple Sclerosis: An Ecological Study." Ecology of Food and Nutrition, Volume 46, Number 1, January-February 2007, pp. 1-11(11)
Cantorna MT, Mahon BD. "Mounting evidence for vitamin D as an environmental factor affecting autoimmune disease prevalence." Experimental Biology and Medicine 229:1136-1142 (2004).
