Good news if you like coffee: caffeine may turn back the clock when it comes to cognitive decline.
A study has found that caffeine is one substance that can boost the production of an enzyme that prevents misfolded proteins in the brain, which are thought to play a role in several neurodegenerative diseases, such as Alzheimer's, Parkinson's, and Huntington's diseases.
Here's a quick summary of the research: Caffeine Boosts Enzyme That Could Protect Against Dementia.
As always, treatments based on these findings are still in the future, and you shouldn't change your life based on the results of one study, but if you already drink coffee, now there's one more reason to feel good about it.