Bruxism bruxism), but also possibly grinding, and is often associated with other semivoluntary oral habits such as cheek biting, nail biting, chewing on a pen or pencil absent mindedly, or tongue thrusting (where the tongue is pushed against the front teeth forcefully). There is evidence that sleep bruxism is caused by mechanisms related to the central nervous system, involving sleep arousal and neurotransmitter abnormalities. Underlying these factors may be psychosocial factors including daytime stress which is disrupting peaceful sleep. Sleep bruxism is mainly characterized by "rhythmic masticatory muscle activity" (RMMA) at a frequency of about once per second, and also with
Involuntary euthanasia McKim, a New York physician and author published a book titled “Heredity and Human Progress.” This book suggested that people with severe inherited defects, including mentally handicapped people, epileptics, habitual drunks and criminals, should be given a quick and painless death by carbonic gas. In January 1938, the National Society for the Legalization of Euthanasia was formed, and was renamed the Euthanasia Society of America (ESA) later that year. It advocated for the legalization of euthanasia in the United States, primarily by lobbying state legislators. Many prominent ESA members advocated for involuntary euthanasia of people with mental disabilities, including Ann