Zero lower back pain so far, one week in the hammock. Weird, but very comfortable.
First two nights I didn't sleep well, and I froze even in a 70° house surprisingly. It's a Dream Hammocks Darien with the lightest material with the OneTigris cheapo Amazon under quilt. Omg what a difference. I have had extreme lower back pain for years when sleeping. Seems it comes from the weird positions I sleep in. A 20lb weighted blanket helped hold me in place a bit, but the hammock is better. I also need a pillow under my knees and a thick comfy comforter. But once I got all that figured out I've been sleeping great.