Doc here. Yes. Literally acres of it (measuring the floor space occupied by the National Library of Medicine).
Eat real food, not to much, mostly plants. Two entrees at most US restaurants will feed a family of 4, with leftovers.
(still need to read it)
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What would you recommend their diet consist of if they want to prevent ill health or gain health?
Ignore diet because Gerson was a quack? And just hope they don't get sick? And if they do, come to you for you to select what drugs you deem to have the least conflict of interest at the time?
Do healthy and sick people a favor, and keep your "intellectual" clown bullying from encouraging them to ignore the daily factors that accumulate to become their health or ill health over years.
If I call Dr. X a fraud because he claims coffee enemas are a great way to clear the body of cancer (Such as, say... Max Gerson did), yet Dr. X also believes that drinking water is necessary to sustain life, it doesn't follow that I don't believe drinking water is a great way to stay alive.
Haven't seen this movie, but your question is more online group think pessimism and reluctance to take responsibility for our actions and lifestyles.
What about the movie, apparently covering diet and nutrition, makes you think it has anything to do with a belief system based on stronger dilutions of chemicals having a greater effect than a weaker dilution?
Seriously, some of the questions asked by geeks online leave the ordinary reader wondering if there's a herd of you in a room high-fiving each other after your asinine remarks. Carry on with your groupthink if you must, but it's getting old.
Of course you don't see nearly as many "studies" on diet therapy as you do a typical medicine or pill, most scientists and doctors that practice alternative therapy are considered heretics (cooks, crazy people, etc) and banished from the "mainstream" portion of the medical world (the one with all the cash flow).
Look up Dr. Max Gerson and all of the amazing things he's done with the use of a simple diet therapy consisting mainly of juices and fruits and vegetables. I would highly recommend his biography - http://www.amazon.com/Dr-Max-Gerson-Healing-Hopeless/dp/0976...
It's a fascinating read and really challenges you to think against the mainstream medical world.