But with the Industrial Revolution and introduction of various industrial techniques for purifying sugar, we have a situation in which what we are consuming is not good nutritionally or ecologically.
Pigs prefer to wallow in clean mud, but if nothing else is available, they will frequently wallow in their own urine, giving rise to the notion that they are dirty animals.
The answer has to be sought in the material conditions of the production and utilization of cattle in India compared with the production and utilization of cattle in other parts of the world.
When a woman gives birth to a child, the child needs to be able to digest the mother's milk; but when this child is old enough to begin to eat other foods, there is some switching off of this ability to consume milk.
Now we are in a situation in which for a significant part of the industrial world too much could become a danger, especially too much of the things which are really not good for us in such large quantities.
I don't know of any cases where as a result of religious precepts a population have found themselves enjoying less food than they would have if they didn't follow this particular religion.