By studying and keeping your mind occupied in working towards your college degree can go a long way in reducing your risk of developing dementia. A study published in the New England Journal of Medicine claims that studying at least till college making appropriate changes in your lifestyle by improving your physical health could eventually help delay the development of dementia or prevent it altogether. Did you know people who drive are at lower risk of dementia? Till date the exact cause of dementia still remains remains elusive for medical researchers. Read: Scientists find a new way to reverse dementia.