section_path: Causes and factors/Physiology
section_name: Physiology
paragraph_text: Physiology
  
  Neurotransmitters, hormones, and metabolism are all recognized as biological factors in human behavior.
  
  Physical disabilities can prevent individuals from engaging in typical human behavior or necessitate alternative behaviors. Accommodations and accessibility are often made available for individuals with physical disabilities in developed nations, including health care, assistive technology, and vocational services. Severe disabilities are associated with increased leisure time but also with a lower satisfaction in the quality of leisure time. Productivity and health both commonly undergo long term decline following the onset of a severe disability. Mental disabilities are those that directly affect cognitive and social behavior. Common mental disorders include mood disorders, anxiety disorders, personality disorders, and substance dependence.