‘red cabbage seems to have the highest amount of glutamine, overall.”
Eat only meat and eggs just for a coupke of days with zero plants and your vision improves instantly, like with a switch. That’s how we can confirm what foods have the most glutamine, without doing a single analysis.
There is zero fiber in meat and eggs. Human bowels are long similar to herbivore animals. Not short like carnivore animals. Eating just meat and eggs will cause severe constipation, even blockage. Must eat veggies with meat.