You retain your health only so long as you are willing.
It's very important to distinguish between what most people in the West think about knowledge, and what the Indian concept of knowledge is. In the West the knowledge is something that is tangible, is material, it is something that can be transferred easily, can be bought and sold; or as in India real knowledge is something that is a living being - is a Vidya.
So Ayurveda is a bunch of techniques and theories and practices that have been accumulated over many centuries in a way that we think about Ayurveda. But the Ayurvidya is the Shakti that has inspired the development of Ayurveda. It's inspiring the spread of Ayurveda into many other countries. And has to posses an individual before that individual can actually act as a vehicle for healing energy to move into the world.
You have to be able to connect to the world of archetypes. That is not so easy, and most people in the West have no clue, that that is necessary, because they have no clue of what that means. They see the image, they see Buddha here, but they don't see what the image represents. Its one thing to see with this physical eyes, it's another thing to see with this spiritual eye.
The clothing is moving, the external version is moving. Whether the internal version is moving or not it is a different matter. It is good to practice Ayurveda, it is good to worship the Gods and Goddesses, it is good to do bhajans. Of course, depending on what your own personal development is, that will determine how, in what way and how well you will be able to connect to that tradition and bring it to life inside yourself.
Living wisdom cannot be confined within words, but it can be hinted at through situations, much as a specific feature of an otherwise undistinguished landscape can often be discerned by following the path projected by a pointing finger. "Them that have ears, let them hear," said Jesus; whoever "hears" the inner import of words will be able to "see" their inward meaning.
So the problem in the West is that, especially in places like the USA, a person will obtain this much knowledge and immediately think that they have a large amount of knowledge. And then start to act on the basis of what they think, they posses. Instead of having this much knowledge and realizing that in fact this is only this much knowledge and the amount of where you can go there is where you came is much bigger than where you've already gotten.
We kill with antibiotics and antiseptics, and if our slaughter is ineffectual we use surgery to expel the offending organ from our presence. We destroy the body in order to save it.