Many steels add to the iron-steel mix other metals that give the entire substance desirable properties such as strength, heat resistance, or flexibility. Steel is considered a mixture rather than a compound because the iron does not chemically bond with the carbon and other components.
Some of estrogen's effects include: 1  Increasing serotonin, and the number of serotonin receptors in the brain. 2  Modifying the production and the effects of endorphins, the feel-good chemicals in the brain. 3  Protecting nerves from damage, and possibly stimulating nerve growth.
Estrogen... 1  Reduces bodily hair. 2  Promotes the growth of the hair on your head. 3  Controls your height (explaining why men are usually taller than women)  Reduces the mass of your 1  muscles. Promotes the growth of breasts and gives you your 'womanly curves'.  Helps regulate your menstrual 1  cycle. Keeps your skin smooth.  Keeps wrinkles at bay.