Olive oil was used for cosmetic purposes. Greeks and Romans rubbed the oil into their skin after bathing. Athletes use the oil to keep muscles supple. Women used the oil to keep their skin looking young and to keep their hair shiny. Olive oil was thought to help baldness. Greek physicians used olive oil to help with nausea. The leaves of the olive oil tree were used to reduce fevers. These leaves had salicylic acid which was used in the development of aspirin. Democritus believed a man with a diet of olive oil and honey can make him live to be a hundred years old.
Fats and oils are closely related in chemistry. There is only a small difference. Olive oil is a triglyceride. It has 18 carbons. Triglycerides goes through a process called saponification and produces glycerol and three molecules of soap.
Olive oil is valuable in the Mediterranean area. Olive oil is a major export from the Mediterranean.
I agree with the author in this chapter. I think olive oil has impacted our history. Even today olive oil is used every day for cooking, massaging oils, and fragrances.