Yesterday I continued playing with my character from place where I left off, and I couldn't find any normal food nor open a can with + I couldn't find any drink while I went deeper in map, so I got sick in time with no food nor drink, it turned later in orange or darker orange condition, nothing in Medic Pack that could help me (I finally found useful things, but it turned out to be useless to me and I had no place to place it in, so I had to leave that pack and go on forward while being sick).
I had no idea what so ever how to fix my sickness. When I finally found fresh food and food in cans that I could open without help of special can opener, and I ate a bit even after I wasn't hungry and drank a lot even if I wasn't thirsty, but my sickness didn't changed it's sign color and in time screen went into grey color like I was wounded or something, but I kept going for some time, I don't when when I'll die from sickness, kinda still alive searching for helping tools. It would be good to have some instructions for survivals, like, what to do when you feel sick, what to search precisely, you know...such practical basic stuff.