Saunas, ale, wells, campfires and the trading dock are for happiness, not health. Health largely depends on having a balanced diet consisting of grains, vegetables, fruit, and protein. Herbs can eke this out to a small extent. But if you are missing just one of the four, your health will suffer disproportionately. And it is not enough just to have all four food groups in your town, they must be in each villagers’ home when they arrive home to eat.