At the time Umbach was in Afghanistan, about a decade since US-backed forces captured Mazar-e-Sharif, most people's lives had regained some sense of normalcy. Men were back to their jobs as farmers or factory workers, and girls could go to school.
Dietary fats and oils. Dietary fats and oils are the most concentrated form of energy as they yield 9 calories/g, whereas, carbohydrates and proteins yield only 4 calories/gm. Nuts and oil seeds are good sources of fat. Beside rich in energy, dietary fats are incredible sources of essential fatty acids, vitamin E in addition to act as the transport vehicle for fat-soluble vitamins/hormones. There are two types of dietary fats, visible and non-visible fat.
Polyunsaturated fats are lipids in which the constituent hydrocarbon chain possesses two or more carbonâcarbon double bonds. Polyunsaturated fat can be found mostly in nuts, seeds, fish, seed oils, and oysters. Unsaturated refers to the fact that the molecules contain less than the maximum amount of hydrogen (if there were no double bonds). These materials exist as cis or trans isomers depending on the geometry of the double bond.