Can you prevent autism?

Can you actually prevent autism? I've heard so many different opinions and conflicting studies on the subject, it's hard to know what's true. Is there any definitive evidence that shows we can take steps to reduce the risk of autism in children? Are there specific factors we can control, such as environmental exposures or genetic predispositions? And if so, what are the most effective strategies for prevention? I'm really curious to learn more about this complex and often misunderstood topic.