The science of gerontology has evolved as longevity has improved. Researchers in this field are diverse and are trained in areas such as physiology, social science, psychology, public health, and policy. A more complete definition of gerontology includes all of the following:
Smelly bowel movements are caused by the release of gas. when bacteria, bile or acid mixes with food. Depending on the. food you eat, and where in your digestive tract the mixing. occurs, the combinations can produce various types of gas, all. with different smells.
Sometimes it is associated with bowel related conditions such as IBS. When you have a meal, your stomach get stretched. The nerves in the stomach send signals to your large intestine saying the tummy is full and needs some evacuation. So, muscles in your large bowels contract that causes bowel movements. This action is called gastrocolic reflex.