Israel's top stress expert explains the future of the fight against depression and why pills fail. Professor Alon Chen is dedicated to searching "molecule by molecule" for the trace of stress in the brain.
He is the president of the Weizmann Institute of Science and has been studying the subject for 30 years. The "big problem" that leads to an increase in mood disorders, he says, is that pharmacological treatment does not distinguish between gender issues, nor by age, nor between people.