Here's what your personality says about your dementia risk

According to the World Health Organization (WHO), more than 55 million people around the globe currently suffer from dementia – a general term for diseases of the mind that affect memory and cognition, typically towards the end of someone’s life. For decades, finding out what people who are diagnosed with the disease have in common, or what they don’t, has left health experts scratching their heads. That's because dementia is complex and its causes are multifaceted, but an emerging line of research is pointing towards a surprising commonality: who you are as a person and how you view the world could be a missing piece of the puzzle.