In science, chemistry is the study of elements and the structures they form and is mainly concerned with effects that depend on the outer electrons in atoms in their effect in the formation and dynamics of molecules, chemical species, or other chemical entities. [1] In 1753, chemistry was defined as the physics of small bodies. [2]

Human chemistry
Human chemistry is the branch of chemistry concerned the science, principles, and laws of chemistry applied to interactions between people. The study of human molecules (people) or human elements and the structures they form, mainly concerned with effects that depend on the outer electrons in atoms, is called "human chemistry". [3]

See also
● Affinity chemistry
● Neurochemistry
● Physical chemistry
● Surface chemistry
● Thermochemistry

References
1. Daintith, John. (2005). Oxford Dictionary of Chemistry. New York: Oxford University Press.
2. Chemistry (Chymie) – Encyclopedia of Diderot & D’Alembert (1753).
3. (a) Thims, Libb. (2007). Human Chemistry (Volume One), (preview). Morrisville, NC: LuLu.
(b) Thims, Libb. (2007). Human Chemistry (Volume Two), (preview). Morrisville, NC: LuLu.