He is responsible for one of the most frequently cited estimates of the transgender population â 700,000, about 0.3 percent of U.S. adults. That figure is based on data from two surveys. One, conducted in Massachusetts in 2007 and 2009, found that 0.5 percent of respondents ages 18 to 64 identified as transgender.
Causes of Crohnâs Disease. The causes of Crohn's disease are not known. Diet and stress were once believed to be responsible. However, we now know that these may aggravate the disease, but they do not cause it.Research suggests that a malfunctioning immune system, genetics, and environment may be factors in the development of the disease.mmune System. A main characteristic of Crohnâs disease is chronic inflammation. Inflammation is a normal immune system response to outside invaders such as viruses, bacteria, and parasites. Some researchers believe that Crohnâs disease may start as a normal response to an outside invader.
Primary Cause of Prion diseases. The primary cause of Prion diseases is the result: 1  of transmission from another person under rare circumstances, such as immunocompromised people or during surgery with contaminated surgical tools, or according to rare circumstances as noted from reputable sources.o research the causes of Prion diseases, consider researching the causes of these these diseases that may be similar, or associated with Prion diseases: 1  Spongioform encephalopathies. 2  Creutzfeldt Jakob disease. 3  Variant Creutzfeldt-Jakob disease. 4  Gerstmann Straussler Scheinker syndrome. 5  Fatal familial insomnia. 6  Kuru.