What topic did Trump claim we "maybe know" the cause of?

Trump's claim that we "maybe know" the cause of autism is rooted in the controversial discourse surrounding the condition and its potential relationships with vaccinations and environmental factors. This statement reflects a broader narrative that has circulated in public discussions about autism, particularly regarding the debunked theory that vaccines play a significant role in its onset. This narrative has persisted despite extensive scientific research disproving any causal link between vaccines and autism. The choice highlights a critical term "maybe," suggesting a level of uncertainty and openness in the claims made about understanding autism, which is often a subject of debate among the public and experts alike.

The other topics, such as diabetes, climate change, and heart disease, do not align with key moments or statements made by Trump in the same way that autism does. Moreover, discussions about their causes tend to be rooted in established medical and scientific understanding, rather than the contentious debates that surround autism. This context helps clarify why the claim regarding autism is prominent in discussions involving Trump.