Professor Gilbert Deray, head of the nephrology department at the Pitié-Salpêtrière, detailed on Europe 1 the economic, ecological and health reasons that should encourage everyone to abandon the water plastic bottles for that from the tap.

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While some swear by the bottled water, consuming it is good for almost no one in developed countries. This was explained by Professor Gilbert Deray, head of the nephrology department at Pitié-Salpêtrière in Paris, Wednesday, Europe 1. Guest of the show Sans Rendez-Vous , this specialist, author of the extraordinary powers of the kidney , gave economic reasons, ecological and especially sanitary to avoid consuming it to turn more willingly to the tap water.

"200 to 500 times more expensive than tap water"

"You do not have to drink bottled drinks anymore, including water," he thundered. First, depending on the brand chosen, "it costs 200 to 500 times more expensive than tap water." And this can very quickly weigh in a budget as this purchase is recurrent. Not without humor, Professor Gilbert Deray adds that "you have to get [his water packs] at the supermarket, and it's heavy." An argument of weight.

More seriously, the specialist advances an ecological reason. "Plastic has invaded our planet, it needs to be produced, the plastic bottle, and to make a one-liter bottle of water you need an extra three to four liters of water." What to make advocates of the planet to use more readily a glass (not plastic) to the tap.

"The plastic is leaking into the bottle"

Finally, and most importantly, "the plastic leaks into the bottle". Bottle in which "you will find bisphenol, phthalates and microfibers of plastic", details the head of the service of nephrology, before balancing a slightly distressing comparison. "If you only drink water in a plastic bottle, you will absorb the equivalent of a plastic credit card each week."

Moral: "Tap water, in developed countries of course, it is perfect."