3 ms·

Could some research-savvy person check the paper to see if there's any causality proven, or just correlation?

• tboyd47 8y ago
  Longitudinal studies are typically observation only, so even the stronger ones won't establish causality. But that doesn't mean the conclusions aren't valuable. For example, if we know that DDT exposure in particular increases the risk of autism, then we can start looking at how those chemicals interact with cells, and find out more about autism at the biochemical / cellular level and even create a drug that counteracts those processes. Then we get into experimental trials which do establish causality.