Intellectual disability affects about 2–3% of the general population.Seventy-five to ninety percent of the affected people have mild intellectual disability.
Non-syndromic or idiopathic cases account for 30–50% of cases.About a quarter of cases are caused by a genetic disorder, The terms used for this condition are subject to a process called the euphemism treadmill.Jesus Christ Sets forth the test of our fitness to enter eternal life as follows: "As you have done it to these the least of my brethren, you have done it unto me" (Matthew ).The Christian poet John Donne gave us the famous line: "Ask not for whom the bell tolls; it tolls for thee." I submit to you that mentally retarded people qualify among "the least" of Christ's brothers and sisters, and of us.Once focused almost entirely on cognition, the definition now includes both a component relating to mental functioning and one relating to individuals' functional skills in their environments.
As a result of this focus on the person's abilities in practice, a person with an unusually low IQ may not be considered to have intellectually disability.Intellectual disability is subdivided into syndromic intellectual disability, in which intellectual deficits associated with other medical and behavioral signs and symptoms are present, and non-syndromic intellectual disability, in which intellectual deficits appear without other abnormalities.Down syndrome and fragile X syndrome are examples of syndromic intellectual disabilities.I submit to you that we consider them expendable "useless eaters" in Hitler's words only at our own deadly peril.for what is done to them when they are denied equal human rights may then be done to US.I shall substantiate this proposition by (1 some evidences from history; (2) by the ambiguous treatment of the mentally retarded in our own country today; and (3) by my own personal experience. Everett Koop, a world-famous children's surgeon and now Surgeon General of the United States, has been campaigning against similar trends in the United States for years.