Would you want to know your chances of getting Alzheimer's?

Chris Hemsworth has said he will take time off after discovering he has a genetic pre-disposition to Alzheimer's disease. There's no cure to Alzheimer's, no way to know when or if he will get it, or how his symptoms will manifest. Which raises the question, 'when is it worth undergoing genetic testing?'. 

Learn more about your ad choices. Visit megaphone.fm/adchoices

See omnystudio.com/listener for privacy information.