Character stats – health, stamina, food - have been added to Medieval Engineers. This is one more of the main survival features that we are introducing to the game. Your character will now be affected by health, stamina and food. The character’s health will regenerate slowly through time and you can increase it faster by eating (mushrooms, etc.). Eating will also replenish your stamina and food. When hunger gets to 0, the character will start losing health. The stamina is affected by the player's actions except walking and crouching. Additionally, we have added more construction models for blocks used in survival building.
https://www.youtube.com/watch?v=sGG6cZieoSw
Full list of new features and fixes: http://forum.keenswh.com/threads/7364129