A new study came out before the Alzheimer's Association conference in Boston, showing that patients with cancer had a dramatically lower risk of developing Alzheimer's disease. Those treated with chemotherapy also fared better, leaving scientists to wonder what the connection is between chemo and protecting against the neurological disorder.

Obviously, no one is going to voluntarily develop cancer to prevent Alzheimer's, but if scientists can determine why receiving chemo reduces the risk, we could see new treatment ideas. 

In this video, health-care analyst David Williamson details this study's results and discusses two high-profile treatments in development by Eli Lilly and Merck .

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The article Bizarre Protection Against Alzheimer's: Cancer originally appeared on Fool.com.

David Williamson owns shares of Eli Lilly and Merck. Follow David on Twitter: @MotleyDavid. The Motley Fool has no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools don't all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.

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