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.
Weak black or green tea can help replace lost fluids. Yogurt that contains live cultures can help restore intestinal balance. Diarrhea that lasts for more than two days may be a symptom of a serious condition. Diarrhea typically resolves on its own within one to two days. Oranges and other citrus fruits provide roughage that helps the digestive tract function smoothly.