The process by which people are eaten is called anthropophagy,which includes cannibalism, and self-cannibalism, as well as predation on humans by carnivores.
A scientific field (which is not current recognized) could be anthropophagology.
Similarly, self-cannibalism could be term autoanthropophagy.
anthorpology
Hydrology is the study of bodies of water
the study of eating disorders
The study of the human lungs can be called respirology or pulmonology.
Biology
Astronomy.
Biology
anthropolgy
astrology
People who study hominids are called paleoanthropologists. They specialize in the study of human evolution and the fossil record of early human ancestors.
Astronomy, the person who studies them is an Astronomer
it is called myology