Silver Book Fact
After the age of 65, the rate of people who develops Alzheimers doubles every 5 years.
Alzheimer's Association. 2013 Alzheimer’s Disease Facts and Figures. Alzheimers Dement. 2013; 9(2): 208-45. http://www.alz.org/alzheimers_disease_facts_and_figures.asp#quickFacts