Cacao disease is a research area that focuses on the various diseases that affect cacao trees, which are the source of cacao beans used to make chocolate. These diseases can have a significant impact on cacao production and can reduce yields and quality of the beans. Researchers in this area study the causes, symptoms, prevention, and management of cacao diseases in order to develop effective strategies for controlling them and ensuring the sustainability of cacao production. Some common cacao diseases include black pod disease, frosty pod rot, and witches' broom disease.