All valid points concerning anecdotal evidence weaknesses. The concerns you cite with the evidence here is under what I consider matters confounding or of recordkeeping. I actually remember reading of a case where a woman was receiving the hemp oil and had some sort of liver cancer and how well it was working, only to read at the end that she was taking herself off of the chemo she was ALSO undergoing. That is an example of a confound for sure. Needless to say this warranted a face-palm at having wasted my time reading this case.
Not a waste of time at all. Anecdotal evidence seems to be highly compelling to many, despite its disposition to bias, so I think it's still worthwhile to raise criticisms on an ad hoc basis.
A similar case was reported in a UK tabloid, the Daily Mail 4 May 2011, with the headline 'Boy, 2, with brain cancer is cured after being secretly fed medical marijuana by his father'. In the second half of the article it is finally divulged that the hemp oil had an anti-emetic effect which helped the child through chemo therapy. It seems to be an area that attracts irresponsible reporting.
As far as making sure givers of anecdotal have the condition they say they do, you could argue that Simpson does not have the time or resources to verify these thing, BUT he is giving medical advice and should either step up his verification efforts or become more strident and clear with his disclaimer. Clarity goes hand in hand with honesty and integrity. I have noticed the the Phoenix Tears website is nowhere near as clear with disclaimers as it should be. Simpson, I think we could agree, needs to take greater responsibilty for his content and conclusions.
I would go further: Simpson should not be giving medical advice period. He is not medically qualified. The literature does not support the view that hemp oil is more efficacious than current approved treatments. Anti-tumourigenic does not equate to curative.
Let's imagine a scenario where, in the future, hemp oil is shown to cure some cancers (I'm not indicating that I hold a belief that this will be so). Remember Simpson advocates that sufferers avoid the medical profession altogether. In our scenario, a 'patient' is not responding to hemp oil, but they would still have a reasonable chance of success with the current standard therapy for their cancer. However, they cannot receive chemotherapy or radiotherapy from Simpson, & they trust Simpson's advice that mainstream healthcare will have a deleterious if not mortal effect on their health. This is not to mention complications, co-existing conditions which require management etc. There are no circumstances under which this kind of practice concerning critically ill people would be acceptable.
We have a regulated medical profession, peer review, and clinical trials, not to disenfranchise patients, but to safeguard them.
Finally, I would say that anecdotal evidence is never a sound basis for anything by itself. Anecdotal evidence at best can only lend support or opposition in concert with peer-reviewed and properly studied proof of concept pathways (such as is present with the hemp oil constituents and endocannababoid studies I referenced.) and empirical evidence.
Again, agreed. Though whilst I think anecdote is a good reason to look at possible mechanisms and, if sufficiently convincing, look at instigating serious research, I'm not sure how much of a role it should really have beyond that. We have in vitro, in vivo animal model, xenografting & Guzman's safety trial on patients with recurrent Glioblastoma Multiforme. Surely these are a more reliable basis for determining the course of future research efforts.
In fact, there are 925 PubMed results in a search of 'cannabinoids cancer'. Many of these results will concern potential anti-emetic therapies & perhaps other areas, but the point is that studies concerning cannabinoids are happening and are being funded. I repeatedly see the argument that the pharmaceutical industry can't patent hemp, so they won't research it. Yet these same individuals don't hesitate to point to the numerous studies that have been conducted with synthetic compounds to support the conclusion that hemp does cure cancer.
A little longer than initially intended; apologies...
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