The study was released in the Journal of Medicinal Plant Research in June of 2010. It was conducted at the Natural Product Laboratory, Department of Pharmaceutical Chemistry, Faculty of Pharmacy, College of Medicine Campus, University of Lagos.
The results state "study clearly showed that compounds of P. americana (Aka Avocado Leaf) have powerful antioxidant activity. Therefore, the use of the leaves might be helpful in preventing or slowing down the progress of various oxidative stress related diseases. Thus, further explaining its use in folkloric medicine."
Please see the following full study. Please note, the botanical name for the Avocado tree is "Persea americana".