Disease

Disease is a harmful physical disorder not caused by injury. It can affect humans, livestock, or crops.

Settlers
In humans, disease is triggered by low stats, such as going hungry repeatedly. Poor nutrition, constant tiredness, chronic dehydration, and depression all make disease more likely to trigger in humans. When disease strikes it gradually degrades health for a set amount of time, which is partly random. If health reaches zero, the person dies.

Animals
In domesticated animals, disease is randomly triggered but usually strikes several individuals of a species simultaneously. As in humans, disease has a random set time, and health gradually decreases whilst under the affects of the condition. If health reaches zero, the animal perishes. Animal disease is highly unpredictable but its consequences can usually be limited by diversifying animal types kept.

Crops
In domesticated crops disease becomes apparent in at the time of harvest (Summer for pulses and Autumn for grain), and sometimes affects whole swathes of a particular crop type. Diseased crops appear slightly withered and darker colored compared with healthy crops. Settlers will not harvest diseased plants. Crop disease is highly random but its consequences can usually be limited by diversifying planting.