Career
Cohen received his M.D and Ph.D in nutrition from the Paris Diderot University in 1983, after which he worked as a nutritional consultant for a research laboratory from 1982-1986. In 1986, he founded one of the first poly-disciplinary consultation centers in the Paris region. He wrote his first book, Savoir Maigrir (Know How to Lose Weight), published by Groupe Flammarion, in 2002.
In 2007, Savoir Maigrir was adapted as an online weight loss coaching program. In 2011, Cohen critiqued the Dukan Diet, saying that the low-carb diet was dangerous and could lead to long-term problems. In 2012, Cohen released his first book in English, The Parisian Diet: How to Reach Your Right Weight and Stay There, along with its online version.
Cohen frequently appears on TV shows in France as a nutrition expert.