Stainless Steel and the passive layer Steel is an alloy of iron and carbon. Contrary to carbon steel, the presence of a minimum of 10.5 % chromium in the stainless steel gives it the property of corrosion resistance. Indeed, on contact with oxygen, a chromium oxide layer is formed on the surface of the material.
Sinus Drainage & Stomach Problems. One of the primary results of sinus congestion is drainage. Sinus drainage is expelled in two basic ways: through the nose and the back of the throat. When sinus drainage is expelled in back of the throat, it is referred to as postnasal drip and can cause stomach discomfort.
1. Esophageal issues. The esophagus is the tube that connects your stomach to the throat, and as much as it might sound strange, problems here can cause blood to appear in your stool. Bleeding caused by any kind of tear in the esophagus can create dark red streaks in your stool. Not only that, if the bleeding is substantial, you may experience vomiting (which will also include blood), as well as light-headedness and a generally unpleasant and metallic taste in the mouth.