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.
Alcohol, Caffeine, and Soda. When you have diarrhea, the beverages you drink can worsen your condition. Alcohol can affect your cells' ability to absorb water, leading to dehydration, which is already a concern for someone with diarrhea. Caffeine, found in coffee, tea, chocolate, and some energy drinks, is a stimulant that can speed digestion and cause diarrhea. Soda contains gas, and if you have diarrhea that's one symptom you're trying to avoid. Instead, stick to clear liquids.