Oregano / Wild Marjoram

Oregano's primary bioactive compound carvacrol is one of the most extensively studied natural anti-cancer monoterpenes. Carvacrol and thymol induce apoptosis in breast, prostate, colon, lung, and liver cancer cells through multiple mechanisms: disrupting mitochondrial membrane potential, inhibiting NF-κB, activating caspase-3/9, and inhibiting cancer cell migration and invasion. Carvacrol also inhibits LOX enzymes (lipoxygenases) that produce cancer-promoting inflammatory prostaglandins. Mediterranean oregano (Origanum vulgare ssp. hirtum) contains 60–80% carvacrol in its essential oil — among the highest of any plant. Wild Greek oregano (rigani) is particularly potent — field-grown mountain oregano contains 3–5x the carvacrol of greenhouse-grown varieties. Turkish researchers have published extensively on oregano's anti-cancer mechanisms. Beyond direct anti-tumour activity, oregano has powerful antimicrobial properties against H. pylori — a major driver of gastric cancer.