Living systems are composed of various biomolecules like carbohydrates, proteins, lipids, vitamins, minerals, water and nucleic acid etc. Life depends on the interaction of various biomolecules and biochemical reactions. Any abnormalities in these process may lead to disease.
Medicine is the science or practice of the diagnosis, treatment, and prevention of disease. And for a treatment of any medical condition or diseases, one must understand the reason behind this condition.
knowledge of chemical nature and reactions of biomolecules (biochemistry) is essential to understand health and diseases. It can be said that all diseases have a biochemical basis. In medicine, it is needed to understand the basis of these diseases in order to diagnose and treat.