I have tried NatureCBD and believe in the product. I particularly noticed alleviation in joint pain and reduction in stress – although stress reduction may have been supported by pain reduction. However, since I live in Canada and it is expensive to ship, I have been using CBD from a licensed medical marijuana facility. The effect is not as powerful as from NatureCBD. I had not really considered the bioavailability issue; perhaps that is the reason for the weaker effect. Or possibly it could be the other herbs added, or the synergistic effect. In any case, I am going to bite the bullet (at least my visa card will) and go back to NatureCBD.
In the video, you learn about one study in which researchers found that pot smokers had lower levels of obesity than people who do not smoke pot, and another study that found that a brain chemical with a structure similar to one of the active compounds found in cannabis might actually help people lose weight. The findings are just the latest addition to a growing body of evidence that marijuana may be useful in countering issues related to obesity.
CBD has been shown to interact with the body’s endocannabinoid system, a network in the brain that seems to play a role in social behavior, circadian rhythm, and reward processing—all of which can be atypical in people with autism. For that reason, researchers are excited about a study that’s currently underway at the University of California San Diego about CBD’s potential as an autism therapy.

^ Nadulski T, Pragst F, Weinberg G, Roser P, Schnelle M, Fronk EM, Stadelmann AM (December 2005). "Randomized, double-blind, placebo-controlled study about the effects of cannabidiol (CBD) on the pharmacokinetics of Delta9-tetrahydrocannabinol (THC) after oral application of THC verses standardized cannabis extract". Ther Drug Monit. 27 (6): 799–810. PMID 16306858.

I should begin by clarifying the fact that I am *not* a physician and this is *not* to be interpreted as medical advice. Please talk to a licensed medical professional about all of this! Studies conducted to evaluate the safety of CBD intake for pregnant mothers found it to have no significant effect on developing embryos: http://www.ncbi.nlm.nih.gov/pubmed/7568154
That headache study cites research linking CBD to lower rates of anxiety. (Since anxiety often produces headaches, the authors say, CBD could be a plausible headache remedy if those anti-anxiety benefits are legit.) Grant says he’s looked at the literature on CBD and anxiety, and some of it is enticing. He mentions a Brazilian study, for instance, that found people with a fear of public speaking felt less anxiety and less discomfort about their phobia after taking CBD, compared to those who took a placebo.
So am I to assume, due to no response/deleted comment that my simple question was too difficult to answer? With all the technical & correct information you have on you GREAT website, can someone (?) not simply correct or acknowledge the FACT the your NOT using nano-particle size product? I am truly interesting (for my wife) in CBD, have done my research, and I love working with numbers which is why if found this discrepancy. Comments welcome, but avoidance is disturbing.