12. VIPomas
Vasoactive intestinal peptide is created by VIPomas and can cause the body harm and discomfort with diarrhea. You may notice the symptoms to be mild at first but will increase in intensity and frequency as time progresses and by the time someone seeks medical attention the diarrhea is severe and watery, so if you’re suffering from any discomfort like described seek medical attention. People who are diagnosed with VIPomas also have problems with digestion due to the low acid levels in the stomach.