The organization and daily routine of a wagon train depended on the danger expected from the Native American tribes into whose territory it had traveled, the terrain, and the size of the caravan. Mormon trains, in particular, had a semi military formation.
Side effects. Taken at normal doses, selenium does not usually have side effects. An overdose of selenium may cause bad breath, fever, and nausea, as well as liver, kidney and heart problems and other symptoms. At high enough levels, selenium could cause death.
Selenium benefits include the ability to fight the aging process and help the immune system by reducing free radical damage. Selenium has a synergistic effect with other antioxidants like Vitamin E, enabling the body to fight oxidative stress and to defend against cancers like prostate and colon cancer.