This is the point where the study will show itself to come to nothing. Someone surviving fifteen days in waterless conditions without significant harm would shake the foundations of the medical community. Note that the study's terms indicate they have video footage and other evidence, so they could easily publish their results. If that was confirmed, you would find hundreds of medical articles about the phenomenon and the news would be on the cover of every major publication in the world.
As of this post, I can't even find many solid sources making reference to this at all. Most likely, the story will fade from sight fairly soon.
I don't have a solid citation for this, but it's no less legitimate than the blogs on which this news has been repeated:
Sanal Edamaruku (president of the Indian Rationalist Association) wrote:I asked to be allowed to send an independent team to survey the room where this test is taking place, but I was repeatedly turned down. It is ridiculous to ask people to believe that any man can go 15 days, let alone 70 years, without food or water.
Dr. Shah has been in charge of three similar investigations over the past ten years, and he has never allowed independent verification. In 2000, he was asking for funds to investigate a man he claimed got his energy from the sun, just like plants do. In 2003, he even approached NASA for funds to investigate Mr. Jani, claiming astronauts might benefit from the research. This particular hospital, led by this particular doctor, keeps on making these claims without ever producing evidence or publishing research.