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.
1 Vitamin E: Helps the body regulate retinol levels, which is essential for healthy skin. 2  It is also key for healthy immune system and healthy eyes. 3  Selenium: A mineral that may help protect the skin against sun damage and wrinkles.ertain vitamins and antioxidants may help improve the health and quality of your skin. Research has found that antioxidant vitamins A, C and E, as well as selenium, can help support and maintain healthy skin and may protect the skin against sun damage.