Changing your menu. The connection between the diet and your health is apparent. If you try to consume only healthy food, you have a high chance that your organism overcomes the toenail fungus. You must get the needed nutrients: yoghurt with probiotics has iron that prevents brittle nails, protein that supports nail growth. There must be fatty acids in the meal you consume, food with vitamin D, calcium, which is in the dairy products with a small quantity of fat.