NDTV | Caffeine is Not All Bad: It Can Prevent Dementia and Alzheimer's NDTV According to a new study done by Indiana University, little doses of caffeine can protect the brain against several degenerative neurological disorders like dementia by boosting the production of an essential enzyme. There have been previous studies ... Is Coffee Good For You? Caffeine Prevents Dementia and Alzheimer's, New Study Suggests Caffeine May Prevent Alzheimer's and Other Dementias | Big Think IU study finds caffeine boosts enzyme that could protect against dementia |