I had something similar where I would log in, and always be 9313 health, no matter if I took dmg or ate food to max out my health. Later on, after I got knocked out, the same thing started happening with knock outs. Everytime I logged on I would lay there unconcious for a couple of minutes. A friend of mine was permanently stuck at 3000+ health each time he logged on, no matter how many meats he ate. He eventually fixed it by downgrading to 1.7.0, going to a 1.7 server. Eating. Then upgraded to 1.7.1 I didnt try it with the KO problem I was having. But it might work. Also haven't tried it since 1.7.1.1 (maybe they fixed something in the hotfix)