H.E-DISS Alzheimer’s disease

“Suppose that a person learns from a genetic test that they have a predisposition for Alzheimer’s disease
-Who should have access to this information?  Medical practioners? Insurance Companies?  The Individual?  Would you want to know?  Why?
-Should insurers be allowed to refuse health insurance policies to individuals who are genetically predisposed to certain diseases?  To those whose lifestyles place them in high-risk categories for certain diseases?  
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