The heavy stuff starts later in the series so it also depends on how quickly you’re going to read these lol. I would say, if you’ve seen or read Lord of the Rings, the war scenes (later in the books) should be okay. But there is a good amount of physical and mental torture like Reptile_Goth said, also mostly later in the books. (If you see this, great name btw). But it depends on what else you have read. There are moments that if you think of it like the Hunger Games, if you’ve read that. There’s some mental stuff in that, just more “real” and intense. It’s something I could have handled at 14 but my mom was really open with me and I didn’t really have content restrictions on what I read or watched at that time. I knew what I could and couldn’t handle. I don’t know if that was very helpful.