Those words are taken from the classic book, “Health, Healing and Beyond” where T.K.V Desikachar recounts the life and the work of his father T. Krishnamacharya, the founder of modern Yoga:
”.. What is the proper attitude toward food, the ideal diet?
Let me emphatically clear up one widespread misunderstanding. Nowhere in the Vedas or in the ancient teachings is it said that you must be a strict vegetarian.
Westerners, in particular, seem to believe that to seriously study Yoga it is imperative to adopt a vegetarian life-style. This is not the case, and for some individuals may even be unhealthy. That my family has a vegetarian diet is a matter of preference, but we live in a hot, tropical climate that produces a great abundance and variety of fruits, grains, and vegetables.
To choose to be vegetarian may indeed be essential to health for some individuals- or a matter of taste, environmental conviction, philosophy, or religious belief.
But it is not a commandment embedded in Yoga. ”
From ‘Health, healing and beyond’, chapter ‘A yogic view if health’, page 115