New York: US President Donald Trump has asserted an unproven link between painkillers and autism, and urged American parents to delay vaccinating their children, despite admitting he was presenting a personal opinion that was not based on medical advice.

In an extraordinary, rambling press conference that was broadcast live on cable television across the US, Trump warned pregnant women not to take paracetamol, or Tylenol, but at times appeared to address his remarks to all Americans.

US President Donald Trump in the White House on Monday (Tuesday AEST), as Health Secretary Robert F. Kennedy Jr (left) watches. Credit: AP

“Taking Tylenol is not good. It’s not good … Don’t take Tylenol,” Trump said multiple times. “Just don’t take it unless it’s absolutely necessary.”

The president a

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