There are plenty of quality and health savings organizations that would fund such a trial if there were any hint of benefit. But there isn't.
I'm glad to hear that pseudo-science still gets shut down in social circumstances.
http://www.telegraph.co.uk/science/2016/03/12/fasting-for-th...
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4684131/
I personally know multiple people that did listen to me and others who told them about the healing powers of a water fast, and cured their illnesses by doing it. There's really no downside. You are not "starving" yourself. That is such an insane myth.
I myself did too - got rid of a bad arthritis in the knee that I've suffered from for years - just 20 days into a fast (this was 6 years ago, no inflammation of any kind since).
Several reasons:
1. They conducted one, but didn't like the results.
2. "Don't ask what you don't want to know the answer to" applies here - there is ZERO benefit in discovering that water fasting indeed reverses diseases to which these entities have vested interest in keeping their symptoms a lifelong struggle to patients. Nothing good would come out of it for them. The entire modern medical business model would collapse.
Tin foil hat? Sure, label me that. All I can do is drop tidbits that may be helpful to someone now or in the future. I already know that I've helped a couple dozen people personally in the last few years, myself included.
Those people would still be in a very bad shape if they waited for government or pharma company to endorse what has already been proven to be used successfully for hundreds of years as a primary healing treatment.
For sure, there are seemingly endless possibilities that are not being thoroughly explored by the many scientific bodies, but I can understand why that is.
Thanks for taking the time to reply with more information/research.