What are Robert F Kennedy Jr's controversial claims?

The head of the largest organization of public health professionals in the US says Donald Trump's pick for health secretary is “absolutely the wrong guy”.

Georges C Benjamin says Robert F Kennedy Jr has no health background and has "already caused great damage to health in the country", referring to Kennedy’s scepticism of vaccines.

Kennedy has a history of spreading health information that scientists say is false. Trump told his supporters that Kennedy wanted to "help make America healthy again".