RFK Jr. would also have the power, along with the FDA commissioner, to slow down or hamper the process by which new vaccines are evaluated, approved, and recommended. That could discourage pharmaceutical companies from developing new or reformulated vaccines.

His past pro-choice views could be a bigger problem than what he believes about vaccines or food, but Kennedy may agree to kowtow to his new allies.

In one of his most controversial Cabinet picks, President-elect Donald Trump said he would nominate Robert F. Kennedy Jr. to lead the Department of Health and Human Services. Here, we summarize our past work fact-checking Kennedy's claims about health and science.