Addictologist and president of the association SOS addictions, William Lowenstein sees more and more cocaine users in his Parisian practice and notes that their socio-professional backgrounds are increasingly diverse. He says the risks are largely unknown and he wishes to alert the public authorities to the consequences of bad "addiction health strategies" which make "increasingly early" users even more vulnerable. This video is part of a special report by AFP on the "cocaine routes". IMAGES AND SOUNDBITES