Alzheimer's disease may be infectious, study suggests

The “seeds” of Alzheimer’s disease may be transmitted from one person to another during certain medical procedures, scientists have found.

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A study into people who died of a separate kind of brain disease after receiving injections of human growth hormone suggests that Alzheimer’s may also be a transmissible disease. The findings have raised questions about the safety of some medical procedures, possibly including blood transfusions and invasive dental treatment, which may involve the transfer of contaminated tissues or surgical equipment. More...