Iodine Source: Seaweed, milk from cows grazed on iodine - rich coastal soil Effects of deficiency: Blindness, mental impairment, goiter Who's
at risk: People living in mountainous
areas (the Rockies, the Alps, and the Andes), where iodine has been washed
away by glaciation and flooding, or in lowland regions far from the oceans (Central Africa and Eastern Europe) Fortification options: Salt Estimated millions of people
affected: 740