The appointment of Robert F Kennedy has horrified public health experts. Here are his three most dangerous ideas | Devi Sridhar

He says his goal is to Make America healthy again". But behind the laudable slogan there's a morass of conspiracy theories

• Prof Devi Sridhar is chair of global public health at the University of Edinburgh

The announcement that Donald Trump has appointed Robert F Kennedy as the US secretary of health and human services has sent shock waves through the health and scientific community. Kennedy ran as an independent presidential candidate before bowing out and supporting Trump's run in exchange for an influential position, so we have a pretty good idea of his positions on public health.

The main goal Kennedy has trumpeted recently is to Make America healthy again". At face value, it's a noble aim. That's the essence of public health: how to reduce risk factors for disease and mortality at a population level and improve the quality of health and wellbeing. But behind this slogan comes a darker, conspiracy-laden agenda. As someone who has spent a lot of time researching global public health, these are the positions I believe could be the most dangerous.

Prof Devi Sridhar is chair of global public health at the University of Edinburgh