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.
Crohn's disease is caused by a combination of environmental, immune and bacterial factors in genetically susceptible individuals.It results in a chronic inflammatory disorder, in which the body's immune system attacks the gastrointestinal tract possibly directed at microbial antigens.rohn's disease is caused by a combination of environmental, immune and bacterial factors in genetically susceptible individuals.