A thought that came to my mind: perhaps we are eating incorrectly. That means, not eating enough meat, and eating too much filler.
How to eat
Fasting all day, then when it comes dinner time, to strive to eat at least 3 pounds of meat. Eating your meat with kimchi, or some sort of fermented food or sauerkraut. Helps with digestion in order to eat more meat.
Also, eating while standing. Ideally outdoors, al fresco dining. No distractions while eating, in order to eat more.