Final answer:
The normal age-related condition that occurs to the digestive system as a result of slower peristalsis and decreased mobility is constipation.
Step-by-step explanation:
As a person ages, the digestive system undergoes changes that can affect its normal functioning. One of these age-related conditions is slower peristalsis and decreased mobility. Peristalsis is the involuntary contraction and relaxation of the muscles in the digestive tract that helps propel food through the system. When peristalsis slows down, it can lead to constipation and difficulty in moving food through the alimentary canal. This is due to reduced strength and tone of the muscular tissue in the digestive system.