Avicenna stated in his Canon that tuberculosis is contagious, that disease can spread through water and soil, that emotions affect physical well - being, and that nerves transmit both pain and impulses for muscle contraction.
Ibnu Sina menulis dalam Al - Qanun bahwa tuberkulosis menular, bahwa penyakit bisa menyebar melalui air dan tanah, bahwa emosi memengaruhi kesehatan fisik, dan bahwa saraf menghantar rasa sakit dan memberi sinyal untuk kontraksi otot.