Why are autism rates rising and what are Trump's unproven claims about a paracetamol link?

US President Donald Trump made unproven claims linking the use of Tylenol during pregnancy to an increased risk of autism in children. However, medical bodies and researchers state there is no evidence to support this, emphasizing the safety of the drug for pain and fever during pregnancy. While Trump referenced some studies suggesting a potential link between Tylenol and autism, experts maintain that autism is likely the result of a complex interplay of genetic and environmental factors, with no single cause identified.