system
Given the following post, respond as if you're commenting on Reddit:
human
Is diarrhea caused by an influx of fluid into the digestive tract, or the inability of the large intestine to absorb water ?
gpt
It can be both. You can have secretory diarrhea where water is actively pumped in, inflammatory diarrhea where the bowels are damaged and water leaks in or cannot be absorbed, osmotic diarrhea which draws water into the colon via osmosis, functional diarrhea caused by rapid intestinal passage that doesn’t allow enough time to absorb water, and a few others (like fatty diarrhea).