Research on low levels of CBD is, you guessed it, incredibly limited; just a single paper on the medical research database PubMed specifically looked at CBD in these low doses, as a treatment for Crohn’s disease. (It was not found to have an effect.) As such, it wouldn’t be fair to say that 5 or even 20 mg of CBD oil in your coffee is proven to do nothing; that hasn’t been proven. It’s more accurate to say that 20 mg of CBD oil in your coffee has never been proven to do much of anything, and related research indicates that’s probably way too low of a dose to have any measurable effect.
I have read that taking CBD oil may help in the reduction of the size of tumors (specifically brain tumors). I’ve been taking Hemp oil instead, as that’s what came up when I did a search for CBD oil on a popular website. (My first bottle was not flavored and tasted absolutely horrible. Next one was mint-flavored and tastes far better.) Wanted to know if Hemp oild would give me similar results as CBD.
Flower Power, which sells CBD-infused coffee to cafes like Caffeine Underground in New York City, puts 5 mg of CBD in each serving of coffee. The company, like many involved in the sale of CBD, is extremely careful about what it says regarding CBD’s effects for fear of FDA intervention. The standard language for CBD packaging and website documentation is similar to that of many supplements (think: milk thistle, echinacea, elderberry, turmeric) and is some variation on: “These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure, or prevent any disease or ailment.”
To put it simply, I have a kaput back, discs are not in a healthy state in the lumbar area and the inflammation can get so bad you would think it’s hot enough to cook an egg. Vaping this CDB fluid drops the inflammation rapidly, and that obviously helps with the pain. My missus was born with bad knees which are full of arthritis. I got her vaping as well, and she felt a reduction in pain as well. There are analgesic effects too, as well as “relaxing” effects which knock out the need to take Valium to stop muscle cramps. All in all, I went from up to 6 different pills per day to, well, effectively zero, apart from the days when the pain goes seriously high.
A 2016 review of animal studies indicated that cannabidiol has potential as an anxiolytic for relief of anxiety-related disorders and fear. Reviews of preliminary research showed cannabidiol has potential for improving addictive disorders and drug dependence, although as of 2016, they indicated limited high-quality evidence for anti-addictive effects in people. A 2007 study on aggressive breast cancer cells demonstrated that cannabidiol was found to reduce the growth rate and invasiveness of breast cancer cells by acting to down-regulate Id-1 expression. 
CBD is short for cannabidiol, and it is one of more than 60 compounds found in these plants. It acts on the body’s endocannabinoid system, creating physical changes in the body, which can be beneficial in many ways. In recent times, it has become increasingly understood that taking CBD oil, a product made from CBD, can have a positive influence on many aspects of life and health.
^ Jump up to: a b c d Campos AC, Moreira FA, Gomes FV, Del Bel EA, Guimarães FS (December 2012). "Multiple mechanisms involved in the large-spectrum therapeutic potential of cannabidiol in psychiatric disorders". Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences (Review). 367 (1607): 3364–78. doi:10.1098/rstb.2011.0389. PMC 3481531. PMID 23108553.