How to spot a fad diet

Conventional wisdom about diets, including government health recommendations, seems to change all the time. And yet ads routinely come out claiming to have THE answer about what we should eat. So how do we distinguish what’s actually healthy from what advertisers just want us to believe is good for us? Mia Nacamulli gives the facts on fad diets. Lesson by Mia Nacamulli, animation by Avi Ofer