New Study Shows Cannabinoids Improve Efficiency Of Mitochondria And Remove Damaged Brain Cells "I’ve been trying to find a drug that will reduce brain inflammation and restore cognitive function in rats for over 25 years; cannabinoids are the first and only class of drugs that have ever been effective. I think that the perception about this drug is changing and in the future people will be less fearful." – Gerry Wenk, Professor of neuroscience, immunology and medical genetics at Ohio State University