But before any talk of alternative treatments is tabled, more research needs to be done.
"It's the first time anybody's investigated how phenylindanes interact with the proteins that are responsible for Alzheimer's and Parkinson's", said Mancini. They first eliminated the possibility that caffeine is the element that improves thinking and prevents cognitive impairment in coffee drinkers.
Coffee helps increase focus and mental alertness. But you have to make sure you drink a dark roast because a new study has found that darker roasts work better as a preventative of the debilitating disease.
Researchers tested the effect of one type of coffee (Arabica), which was prepared from beans of different roasts: mild roast and strong roast strong roast without the caffeine.
Though the study's findings were significant in showing that coffee can do more than just wake consumers up in the morning, the researchers did note that more research is required in this area, and coffee is certainly not a cure for Alzheimer's or Parkinson's disease.
They then identified a group of compounds called phenylindanes, which emerge as a result of the roasting process for coffee beans.
"The next step would be to investigate how beneficial these compounds are, and whether they have the ability to enter the bloodstream, or cross the blood-brain barrier".
COFFEE has always been believed to have certain health benefits.
Dr. Weaver and colleagues hypothesized that compounds found in brewed coffee may elicit neuroprotective effects by inhibiting the aggregation of beta-amyloid, tau or alpha-synuclein proteins. The researchers believe that these coffee antioxidants protect against the development of Alzheimer's and Parkinson's, because they have the potential to inhibit proteins beta-amyloid and Tau proteins that accumulate in the brain and cause damage, leading to the development of unsafe diseases.
However, not all coffee would have the same amount of phenylindanes.
Dr Weaver said: 'So phenylindanes are a dual-inhibitor. The darker the roast, the more compounds in each cup. "Very interesting, we were not expecting that", Weaver noted. However, the researchers said that they hope to continue investigating how the phenylindanes in coffee affect the human body.