That's true; eatting too many might cause diarrhea. But in my wife's case, when she ate the raw flax seeds, she ate 2 tbsp (30 ml). This is the exact same amount that I put into each muffin. She eats the muffins all the time without any problems; in fact, she has commented that the muffins seem to improve the functioning of her system. But, her system doesn't like the raw ground seeds.flax is used to relieve constipation.. so watch how much you eat.