Lumbar hernias occur through defects in the lumbar muscles or the posterior fascia, below the 12th rib. Patients with lumbar hernias can present with a variety of symptoms, including a back pain, bowel obstruction (if contents contain bowel), or urinary obstruction (if contents are kidney / ureter).
Late adulthood is the time of life after age 65. During this time, people go through many changes in their physical appearance, including an increase in wrinkles due to less elastic collagen, a decrease in muscle mass, and a loss of height.
Answer Wiki. According to wikipedia article Old age the ages of 62-79 is considered old age and then advanced age. The body starts to loose efficiency much earlier than that time (less than 40). This may be linked to physical age, but mentally you never need to feel old.