Evidence linking omega-3 fatty acid deficiencies to mood disorders was demonstrated in two recent studies, with diminished EPA and DHA levels being suggested as modifiable risk factors or prodromal biomarkers for depressive illness in adolescents.[1,2]
The two most common varieties are Ceylon or true cinnamon (C. zeylanicum/verum) and Chinese cinnamon (C. cassia). They have similar properties and health benefits, but C. cassia seems to get a bad reputation for its coumarin levels, which is believed to be harmful is high doses.
Honey has been used since ancient times as an antimicrobial for wound healing, but was largely dismissed by mainstream medicine with the discovery of antibiotics, until the current and growing crisis of antibiotic resistance has become a global issue.