Basically, we are arguing about your basis to proof versus my basis to proof.

Ayurveda is based on an alternative paradigm to hard-science. The proof of it's effectiveness is not measured on the same basis as experiments you perform in a de-humanized labratory.

The proof of ayurveda and a lot of alternative therapies is in the pudding. It is subjectively measured by the effect on the patient. Proof of satisfaction from experiences of God is also subjectively measured. That is what religion is.

Proof from the hard sciences is necessary, but not sufficient to explain the basis of human satisfaction.