As an economic expert on hospitals, he has been very critical of the French healthcare system, citing the lack of attention given to patients and too much state intervention.[3] He pleads for example for a greater autonomy of the hospitals and denounces the employees of the hospitals, which he says "confuse service of the public and public service, even defense of the public statute".[4] He strongly criticises the excessive centralization of the health system and advocates for the complete autonomy of the hospitals.[5]
He is very critical towards the media and the lack of professionalism of certain journalists. "every day, I am surprise by the mass of information on health and worrying aspect[6] and opposed to the dedication of Charte de l'environnement, under its current form, the precautionary principle in the Constitution of 4 October 1958, thus writing: "The major fault of this precautionary principle, its original sin is a sin of pride. It makes believe that one could protect oneself from everything because one could always detect the cause of a potential catastrophe."[7]
He calls its wishes a scientific, not political, debate on the environmental questions and is against those who he calls the "prophets of the apocalypse" and who play, according to him, on the environmental fears of society to impose their views without being justified scientifically.[2] In particular, in The preachers of the Apocalypse, completely delirious with the ecological and medical, he denounces the "trickery" and "lies" of certain players of ecology.[8] Jean de Kervasdoué considers that climate warning will touch first the inhabitants of poor countries.[9] He considers that the only real possibilities of sustainable development pass by nuclear energy; in particular, he writes that this energy is for the mankind of the million times less mortal, less polluting, and less dangerous than coal.[10] He also decides for the development of genetically modified organisms.