For more details on this topic, see deuterium. A deuterium atom contains one proton, one neutron, and one electron. 2H (atomic mass 2.013553212724(78) u), the other stable hydrogen isotope, is known as deuterium and contains one proton and one neutron in its nucleus.
The caffeine in green tea, especially when taken in large amounts, can worsen diarrhea. Irritable bowel syndrome (IBS) : Green tea contains caffeine. The caffeine in green tea, especially when taken in large amounts, can worsen diarrhea and might worsen symptoms of IBS.
Causes of Green Diarrhea. Sometimes an abnormally green color of the stool is also associated with diarrhea. Therefore the diarrheal stool apears green in color. In these cases the greenish hue may be due to the unprocessed bile or due to other causes that can taint the stool green while causing diarrhea simultaneously.