II. Nutrition
You see, gentlemen, that is quite wonderful, because you can see from it that what is outside in the ordinary physical, material world takes a completely different course from what is inside with us. Outside in the physical world, fats definitely go rancid. Man does not always go rancid for his own good, only when he becomes ill inside. So the thing is that in a healthy state, a person's astral body is such that it cannot go rancid. It only goes rancid if the person eats too much fat for the astral body to cope with, or if too much fat is produced due to some other reason. But internally, the person does perceive when their fat is going rancid. And one can say: When a person becomes very rancid, that is, when the activity of the astral body is much too weak, then he has an unpleasant taste in his mouth all the time. This unpleasant taste then has an effect on the stomach. And in this roundabout way, a person first gets stomach and intestinal diseases from the rancid fat within himself.