Can I get a number in the club too? Had L4-5 issues and an epidural steroid injection in late 2010. It gave me some relief for a few months, but there was more going on than just inflammation (disk debris from old injuries and bone spurring) so ultimately it didn't fix the problem. Despite that and giving alternative therapies a good try, I eventually had surgery and a good outcome.
How well an individual will do with steroid therapy depends a lot on the underlying pathology. Many herniations with swelling and inflammation can and do settle down over time, and the injections can bring your symptoms under control while your body has time to heal. The downside risks are pretty low, but I'm not a fan of using it as any kind of maintenance therapy. If it doesn't work, you still have more invasive (like surgical) options on the table.
Weight control, physotherapy (PT), tincture of time, icing. My day job is as an acupuncturist; that's likely to help too, but ultimately it's up to how well your disks manage to heal themselves. Good luck.