One reason why yoga therapy is so efficient is because it engages the patient in the healing process. When we take responsibility for our health we can take care of ourselves better, because we are actively involved in understanding the causes of our suffering and how to alleviate them. The second reason why yoga therapy is effective is because it takes a multidimensional approach. It views every individual as a collection of different layers and therefore has effective tools to address more layers than just one. The third reason why yoga therapy is effective is because it views every individual as unique and therefore does not prescribe one solution that works for all. It takes into consideration different unique parameters of the patient such as their age, their illness, their strength, their mental capacity, the amount of time they can afford, the other illnesses that accompany them, family circumstances, etc. And then yoga therapy prescribes a unique individual approach that is tailor made for every individual. Another reason why yoga therapy is very effective is also because when implemented in an appropriate way, yoga therapy does usually not create any bad side effects for the patient because the practice of yoga is a non-invasive process that utilizes the international resources of the body such as body, breath and mind. My grandfather T. Krishnamacharya used to refer to it as surgery without surgical instruments.