A cataract is a clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery. cataract is a clouding of the lens in the eye that affects vision. Most cataracts are related to aging. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery.
Commonly known as farting, passing wind, or having gas, flatulence is a medical term for releasing gas from the digestive system through the anus. It occurs when gas collects inside the digestive system, and is a normal process.
Here is how people define flatulence: 1  It is the emission of gas through the anus that can sometimes have a sound and mostly with a bad odor. 2  This is most commonly known as farting. 3  The gas released is called flatus. 4  The gas or flatus is mainly composed of nitrogen, methane, hydrogen, carbon dioxide and oxygen. Swallowing too much air is the common cause of excessive farting. 2  If you eat fast, smoke and chew too much gum, a big amount of air will go inside your body. 3  Overabundance of the bacteria that can be found on the colon-There are foods that cannot be easily absorbed.