[ajkjk]

No one's questioning the claim that research shows there's a connection. You're being rejected because you claimed it was a 100%, if-and-only-if connection. Even if depression is frequently caused by brain inflammation, it is definitely not the case that current science shows depression is always (or always minus epsilon) caused by brain inflammation, so what you said is still wrong.

No one's trying to make you question the validity of your senses. You just need to make claims that are corroborated by reality, at least approximately. It's fine to say there's a connection. It's not fine to say that depression is always caused by brain inflammation, and if you try to do that you'll be downvoted and ignored unless you make an extremely compelling argument (which you didn't).

Based on the research I've perused from google / your references, if you matter-of-factly claimed that some depression is caused by inflammation (or causes brain inflammation? how to tell?) you'd be fine. But to claim depression as a whole -- all of it -- is caused by inflammation? that's still wildly unscientific.