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A.J. says reading the encyclopedia is one way to keep memory from diminishing with age. If you don't have time to read the whole set, you can just read his book, he says. "I give you the best part."

Where does fat go when you lose weight? Why are barns red? If you have a question, A.J. has the answer!
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FROM: Oprah's Most Burning Questions
Published on September 22, 2006

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