Dr. David G. Williams - Each month in Alternatives, I report on prac­tical tools and techniques you can use to both protect and improve your health. I also try to step back a bit and spot overall trends in our lifestyles or diets that could have a profound effect on our future health. Often by making a simple change or two in your diet, for example, you can help prevent problems that will be common in the general population years down the road. Two good examples that I've been following closely have to do with iodine and vitamin D.

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