Dr. Miller is giving a lecture on the theories of aging. She explains that genetics, diet, lifestyle, activity, and exposure to pollutants all play a role in the aging process, and suggests that overall processing speed declines in the peripheral nervous system affecting your brain's ability to communicate with your muscles and organs. Dr Miller is explaining the .

The affordable care act has expanded mental health and substance abuse benefits to 62 million people and is an addition to the mental health parity act of 2008. the changes and additions require mental health coverage in small group and individual plans where people were not previously covered. what is the biggest benefit of these changes? what major challenges are still associated with mental health coverage? explain your reasoning.