The researchers decided to test the compounds found in different beans, including light roast, dark roast, and decaffeinated coffee.
Since a longer roast leads to an increase in the amount of phenylindanes, the researchers concluded that dark roast coffee provided better protection against the neurological condition.
But the Krembali Brain Institute team also discovered that levels of phenylindanes—which give coffee its bitter flavor—were as strong in dark roasted decaffeinated coffee as they were in a regular caffeinated dark roast.
The Krembali Brain Institute scientists acknowledged that their findings show more research is needed on the connection between the coffee and cognitive decline.In a statement, Weaver quickly dispelled any ideas of dark roast coffee being a miracle elixir when it comes to Alzheimer's, emphasizing that more research on the subject is necessary.When it comes to coffee and your overall health, it's not only dark roast varieties that have a benefit.