diseases
La médecine est l'étude des maladies.
Medicine is the study of diseases.
Les germes peuvent provoquer des maladies.
Germs can cause illness.
Ce que nous savons de la santé, nous l'avons appris de l'étude des maladies.
What we know about health, we have learned from studying diseases.
La cigarette provoque des maladies.
Smoking causes disease.