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.
1 Spicy foods: Chilli and curry are likely to stimulate the bowel and make our bowel motions softer. Garlic, although not a spice, is often found in spicy meals and also stimulates the bowel.  Caffeine: This is found in coffee, tea, chocolate drinks, cola type soft drinks and energy drinks.