Explain in detail the different Physiological changes that occur due to aging

The Personal Context of Later Life .
A] Introduction.
B] What are Older Adults Like ?
      1. The Demographics of Aging.
      2. How long will you Live ?
      3. The 3rd 4th Age Distinction.
C] Physical Changes  And Health :
      1. Biological Theories of Aging :
            a) Wear-and- Tear Theory.
            b) Cellular Theory.
          c) Metabolic Theories.
          d) Programmed cell death Theories.
      2. Physiological  Changes :
            a) Changes in Neurons.
            b) Cardiovascular and Respiratory systems.
          c) Parkinsons Disease.
          d) Sensory Changes.
      3. Health Issues: Sleep, Nutrition, Cancer screening
D] Cognitive Processes :
      1. Information Processing.
      2. Memory.
      3. Creativity and Wisdom.
E] Mental Health and Intervention :
      Depression, Anxiety Disorders, and Dementia Alzheimers disease.