Yes, there is evidence that CBD works for some conditions, but certainly not all the conditions it is being promoted for these days. There’s no evidence, for example, that CBD cures cancer. There is moderate evidence that CBD can improve sleep disorders, fibromyalgia pain, muscle spasticity related to multiple sclerosis, and anxiety.
People report that oral CBD helps relieve anxiety and pain and also leads to better sleep. However, the same may not be true for a host of other CBD products on the market today, in particular those that are rubbed on the skin. It’s hard to know whether these have any clinical benefit, because they haven’t been tested sufficiently.
Testing also shows that many products don’t contain what’s claimed on the label. For example, they may have less CBD than advertised. So, buyer beware.