A new factor in depression? Brain protein discovery could lead to better treatments

Low. Down. Less than normal. That's what the word depression means, and what people with depression often feel like. But sometimes, depression can mean too much of something -- as new research shows.The discovery, about a protein called fibroblast growth factor 9 or FGF9, goes against previous findings that depressed brains often have less of key components than non-depressed brains.