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 is a mineral that is needed in small amounts by the body to help regulate the thyroid hormones and support a healthy immune system. One of seleniumâs most important roles is as an antioxidant helping to prevent cell damage due to free radicals.