Scurvy

ThevitaminC present in potatoescan help prevent this disease, caused by a deficiency of vitaminC. It is characterized by cracked lip corners, spongy and bleeding gums, and frequent viral infections. Although it has been eliminated from most first and second world countries with ready access to vitamin C, it still exists in certain nations of the world, so the prolific presence of potatoes in the world helps with this problem.