Last week Robert F Kennedy Jr, Donald Trump’s health chief and a longtime vaccine sceptic, presented a report on children’s health by the Make America Healthy Again (Maha) commission. The study singled out the negative impact of vaccines, ultra-processed foods, environmental chemicals, lack of exercise and “over-medicalisation”.

This week, Jonathan Freedland speaks to Jessica Glenza about the long-term implications of the Maha movement’s influence on US policy