Coroner.
The study of causation is called causality or causation theory. It involves examining the cause-and-effect relationships between variables or events to understand how one factor influences another.
Causation cannot be determined.
energyology? :)
People who study medicine are called medical students or medical professionals, depending on their level of training.
The study of the stomach and intestines is called gastroenterology.Gastroenterology is the study of the stomach or intestines.
The medical term for such a specialized study- and practice is called Obstetrics.
I believe it's called pedology, which is the study of children's behavior and development
Andrology is the medical study of the male reproductive system. But you will often find it combined into Urology.
The medical term is 'podiatry'.
Regarding an individual afflicted with a disease, this is called "Pathology". However, if it pertains to how diseases are generated in large groups of people, this would be termed "Epidemiology".
In the most general terms, the study of causes would be called science. However, there are specialized forms of causation which have their own areas of study. Medicine studies the causes of disease. Criminology studies the causes of crime. Meteorology studies the causes of weather. Historians study the causes of WW II. And so forth.
People who study feet are called podiatrists. They are medical professionals who specialize in the diagnosis and treatment of foot and ankle disorders.