Plenty of people know this from personal experience, but there are always going to be people who need scientific proof before they believe anything. So ...
There is a large and growing body of scientific evidence that Cannabidiol can help with a variety of diseases.
A review of the research in the journal Neurotherapeutics found that "existing preclinical evidence strongly supports CBD as a treatment for generalized anxiety disorder, panic disorder, social anxiety disorder, obsessive-compulsive disorder, and post-traumatic stress disorder when administered acutely. The review noted that most of the studies were on acute (short-term) administration, and that more research was needed for chronic use. That study can be found here.
A more detailed survey of the literature can be found in this full length article: "Cannabidiol, a Cannabis sativa constituent, as an anxiolytic drug"]Cannabidiol, a Cannabis sativa constituent, as an anxiolytic drug.
The study Influence of single and repeated cannabidiol administration on emotional behavior and markers of cell proliferation and neurogenesis in non-stressed mice did find that the anti-anxiety effect continued with long term administration of CBD.
Curiously, CBD's ability to reduce anxiety does not seem to be related to its interaction with the CB1 or CB2 cannabinoid receptors. This review summarizes the research and says there is good evidence that CBD works by interacting with a particular serotonin receptor, the 1A subtype (5-HT1A).
This study modeled panic attacks by exposing mice to the presence of a snake, and found that CBD has significant anti-panic effects. https://www.ncbi.nlm.nih.gov/pubmed/23926240
The word anxiety is derived from the Greek word for fear. Post-Traumatic Stress Disorder and phobias are a product of the consolidation of fearful memories. This study shows that CBD given to humans leads to the improved extinction of fearful memories. https://www.ncbi.nlm.nih.gov/pubmed/23307069
Social anxiety disorder is a common anxiety related condition. Cannabidiol reduced some (but not all) of the aspects of social anxiety in a rat model, but did not have any effect on the hyperactive movements associated with the condition: "Cannabidiol exhibits anxiolytic but not antipsychotic property evaluated in the social interaction test."
So how much CBD is needed to significantly cut anxiety and improve quality of life? It depends. If a strain has significant THC, that can antagonize the effects of CBD. While some have found decent effects with CBD-only products, there is also a large body of experience to suggest that a small amount of THC can make CBD more effective. Different strains and extracts may vary from time to time, and the amount on the label may not match what is in the product.
While standardizing different medicines can be a good thing, that approach has limits, as patients are not standardized - different people will respond differently to the same dose. Experimentation and titration are needed ... doses need to be adjusted and evaluated. While someone using CBD to treat cancer gets little direct feedback and really needs a standardized dose, anxiety disorders are different ... a person can assess their own mood and the effectiveness of a dose.
I tottaly agree with you! Where do you guys buy good quality CBD?