Traditional communities have used cannabis to manage malarial fevers for thousands of years, but how does its chemical structure inhibit parasite growth? Phoebe Harkin | 01/14/2022 | Interview Fire. Domesticated dogs. The wheel. The gene pool that eventually brought us David Attenborough. There’s a lot to thank our ancestors for. And, apparently, we can add malaria treatment to the list. Around 5000 years ago, the world’s oldest pharmacopoeia reported the use of cannabis for malaria fevers.