I've Been Tracking this Game since around 2015/16 and i have'nt heard to much about any medical or disease related problems to your character.
For instance i just thought it would be a good idea to add such things as Malaria since the map is set in a tropical landscape from screenshots. Or maybe thnigs like Parkinsons disease, maybe if you were a hunter for example you may have a hard time aiming, also if medical care is'nt seen to in a while you may become close to death. Food Poisoning could be contracted through Badly cooked food or raw food. Another thing, if you have a visable disease, maybe you could show it on the character. Even a Mental Disease (I know it would be hard to inplement considering its a user behind the player) such as Schizophrenia.
Just Some Things i had on my mind about the game since it's not to long until the town is released.