Can a man make milk from grass like a cow does?

In vain you minus and wonder. A person may not know the key details.

The mammary gland has nothing to do with the intestines and stomach)

It generates milk by pumping all the necessary substances from the blood flowing through a rich network of blood vessels.

Milk, if mom feeds, will be produced in any case, if only mom drank enough liquid. If at the same time she does not eat well, then until the verge of exhaustion and weakness comes, milk will still be produced, but its composition will become poorer.

We cannot eat grass. Therefore, iron will not produce milk "from it". However, we eat parsley, dill, and so on, and the nutrients from them through digestion, absorption through the intestines into the blood, after being purified in the blood through the liver, then enter the mammary gland in this blood and become part of the milk.

In primitive mammals, the mammary gland was arranged in the same way as the sweat glands. And the cubs did not suck the nipple, but licked the milk.

ps VKontakte people expressed that the question, perhaps, is about artificial milk. Maybe they are right and I didn't understand the question. In this case, everything is simple. People have been producing artificial milk for a long time. For allergy sufferers, for some weird vegetarians who don't like cows. And normal full-value ordinary milk is still most efficiently produced by a cow. It will be unprofitable to isolate proteins, fats, carbohydrates and trace elements from the grass. Artificial milk is made simply by choosing the right ingredients and processing them. For example, from soy flour with additives. And since soybeans are grass, here is the "milk" from grass)

The question is not about who eats what and from what produces milk. The question is whether a person can create milk from grass like a cow, from meat like a tiger or from slop like a pig ???

A very interesting question, but it is not clear what is the connection between grass and milk.

Can a person eat grass? No, it cannot, tk. our gastrointestinal tract is not adapted to digest fiber, unlike cow's.

Can a person produce milk - of course he can, he's a mammal. What do mothers feed their babies with?

But, by and large, the question is incorrect. The mammary gland produces milk. It does not depend on what the mammal eats: grass, like cows, meat, like tigers, or slop like pigs.