causal

The FDA, and Kenvue itself, have repeatedly found no causal association between acetaminophen use in pregnancy and neurodevelopmental disorders, the company said.

"Although not yet proven to be causal, this is the type of treatment benefit that we strive for and hope to see with therapeutic interventions -- but rarely do," said Duane Mitchell, M.D.,

The researchers now aim to explore causal mechanisms more deeply through long-term, randomized and genetic trials with a focus on how sugar and its substitutes interact with the gut microbiome and influence liver disease.

Kenvue has said in the past it has studied the science and hasn’t found any causal link between the use of Tylenol in pregnancy and autism.

After eliminating several other possible sources of this correlation, she concluded that the relationship is largely causal.