This is an excellent long article which describes the various facts and angles.

Journalist Moises Velasquez-Manoff here outlines “How one molecule from the cannabis plant came to be seen as a therapeutic cure-all”.

It includes a number of references to real life stories and brings us up to date on CBD being what may be called a “citizen drug”. There are other examples of a single drug being able to help with a variety of conditions. We know aspirin as a treatment for fever and headache, for example, but in low doeses it is also used to reduce the risks of stroke, heart attack and pre-eclampsia in pregnant mothers; It even figures as an adjunct treatment for schizophrenia. Aspirin has its own downsides – an elevated risk of bleeding, for instance – but like CBD, its broad utility may be partly explained by its anti-inflammatory effects. Like CBD, aspirin is derived from a plant.

Folk medicine, for all its associations with old wives’ tales, has yielded important medical discoveries in the past, and it may well do so again.