https://www.youtube.com/watch?v=dWcdBOYy_bU In this very interesting Vsauce video, host Michael explains that before the past was recorded in written form, people relied on older people and their memory for accounts of history, noting that the memories of older people are just as valid and important today as they were in pre-writing times. Discover the major difference between dementia and Alzheimer's disease. He goes on to explain that while many known diseases are in decline, the rate of Alzheimer's disease continues to rise. As other diseases are cured, more people will die of Alzheimer's in the future unless a cure is found. Michael shares some fascinating facts about how the brain--and more specifically, memory--works and how Alzheimer's disease affects a person's memory. He also touches on some of the ways a person can help lower the risk of developing Alzheimer's in later life. 10 interesting facts about Alzheimer's disease you may not be aware of. Alzheimer's News Today is strictly a news and information website about the disease. It does not provide medical advice, diagnosis or treatment. This content is not intended to be a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or another qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website.