Fears surround over-the-counter genetic tests

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Shoppers able to check propensity for Alzheimer's, breast cancer, diabetes

Beginning Friday, shoppers  in search of toothpaste, deodorant and laxatives at more than 6,000 drugstores across the nation will be able to pick up something new: a test to scan their genes for a propensity for Alzheimer's disease, breast cancer, diabetes and other ailments.