Prof. B.Thorens was interviewed by the RTS program “A bon entendeur (ABE)” on the effects sweeteners and sugars have on our brains.

Sugar is very present in our diet, so much so that it has become a real public health problem for several years. This is the reason why the industry began to develop products without sugar, but with sweeteners.
They are found everywhere, hidden where you least expect them. They are so present in so many products that we have become accustomed to their taste, and we are no longer able to distinguish them, but they do not precisely reproduce the appearance and consistency of sugar.

See the interview here (starting at 4:54 mn):