There are two main types (most well known) of cinnamon, C. zeylanicum (or true cinnamon) and C. cassia (also known as C. aromatica). The type of cinnamon that you usually find in most grocery stores is C. cassia, or sometimes a mix of the two. Wherever possible in the following article references I have tried to put which species (if it was known) was used.
If you plan to use cinnamon therapeutically (consult a qualified practitioner) be aware that C. cassia contains more coumarin than does C. zeylanicum.


Alzheimer’s Disease

  • Filament formation – in vitro study of water extract of C. zeylanicum was found to inhibit tau aggregation and filament formation (indications of Alzheimer’s disease). J Alzheimers Dis. 2009;17(3):585-97.



  • Leukaemia – cinnamon had a dose dependant action on arresting G2/M phase of the cell cycle, caused apoptosis, and regulated progression of leukaemia cells J Nutr Biochem. 2009 Aug;20(8):614-20.



  • Head lice – C. zeylanicum essential oil was tested against some of its individual constituents as well as d-phenothrin and pyrethrumto evaluate the effectiveness against head lice. the cinnamon was only slightly less effective than the d-phenothrin or pyrethru. after 24 hours of exposure no hatching was found. Int J Parasitol. 2005 Dec;35(14):1595-600.