Professor Robert Knight of the University of California, San Diego, US spoke to the BBC in 2018 stating that scientists say our human cells only make up 43% of the total cells in our body, the rest is bacteria.
One of the compounds of cannabis is Cannabidiol or CBD. There are a number of medicinal uses for CBD oil (see below). People are more open to the medical benefits of CBD, especially now that it can be separated from the THC, known for its psychoactive effects. In order to separate CBD from the THC (tetrahydrocannabinol) and other parts of the plant, it has to be extracted. The result is CBD hemp oil.