Very little research has been done since medical cannabis became legal in Australia, many patients are getting frustrated with the lack of effort on the government's part.
The pharmaceutical industry is also quite complacent with any research, which it's not surprising as it competes with their own products.

CAMBRIDGE, MA—Shedding light on a promising way to provide relief from the chronic condition, a study published Monday by Harvard University found that medical marijuana was an effective treatment for long-term pain over Jerry Garcia’s death.

Not really news that strains of cannabis now have high THC content, it's what most recreational cannabis users desire, potent cannabis. Some cannabis strains boast THC content 25 percent and maybe even higher? government officials, doctors and anyone who's anti cannabis for whatever reason state this in articles all the time

In the following interview Zoe Sigman discusses the endocannabinoid system with emphasis on the cannabinoid CBD.
Zoe is a writer/researcher for the CBD project.
I'm very skeptical about the medicinal efficacy of any isolated cannabinoids believing that nature knows best and people have ulterior motives.

This is a recent article from the Byron Echo reflecting the frustrations of Australian citizens;

The good oil
Colin Thornton, Federal

Now that medicinal cannabis is finally legal you would think that it would be freely available. But doctors who have tried to access it on behalf of needy patients have found themselves forced through so many legal hoops and obstacles that it becomes almost impossible. And then, if it is actually obtained, the (imported) product is prohibitively expensive.

The danger of cannabis, hemp or marijuana, whatever you choose to call it.
The Following table "Harm Caused By Drugs" was formulated by Prof David Nutt.