Precision Medicine

Why is it that the same medicine does not suit all similar patients ? Some are cured while many others either do not respond or even get worse. Many adverse drug reactions are, in fact, never reported
The reason , it is found, is that all patients suffering from the same ailment, do not have the same genetic make–up. General Physicians have no easy and cheap access to genome –sequencing in advance for each patient.
Genomes study the DNA and protein molecules (a billionth of a meter or a nano-meter in size) and understand causes of diseases (like diabetes, risk of heart failure, depression, dementia and cancer) very accurately.
In addition to genomic coding for proteins (proteomic), studies of how the body deals with one’s diet (metabolomic) and bacterial effects (microbolomic) help to arrive at the correct diagnosis.
At such small levels, Quantum Mechanics ( a branch of Physics ) can predict the precise molecular interactions. This helps to decide the appropriate medicine required for a patient, without any side effects.