According to Jill Hillhouse, a certified nutritionist writing in Canada's "Alive" magazine, studies have repeatedly demonstrated that antioxidants help lower the risk of cancer. Zinc and selenium are two minerals very high in antioxidants and, according to Hillhouse, should be included as part of a healthy, cancer-prevention diet and lifestyle.
Zinc Benefits
Zinc is needed by virtually every type of cell in the body, and is a key component of 200 different enzymes. One of its most important roles in the body is helping regulate the production and activity of T-lymphocytes, white blood cells used by the body's immune system to fight infections. According to Online-Family-Doctor, zinc may also be helpful in treating arthritis, underactive thyroid, fibromyalgia and osteoporosis. Insufficient zinc in the body may lead to problems with the skin and nails, slow wound healing and more frequent or longer-lasting infections.
Benefits of Selenium
Selenium is such a powerful antioxidant that only minute amounts are required to obtain health benefits. According to "Alive," it is a key component of an essential enzymatic reaction with the antioxidant vitamins C and E. Selenium has been shown in studies to help reduce the risk of colorectal, prostate and lung cancers. Its effects on breast cancer are less clear. Because selenium is so potent, supplement intake should be carefully monitored to avoid taking too much, which could potentially cause a serious toxic reaction known as selenosis.
Importance of Anti-Oxidants
Many of the cellular reactions in the body produce oxygen, which the body needs for key processes. A side product, known as free radicals, is also produced, however; these are highly reactive molecules that "steal" electrons from healthy cell molecules, causing damage to the cells. This damage in turn can lead to reduced resistance to infection and illness, and is considered a major contributor to some cancers. Antioxidants in foods and minerals are vital to neutralizing free radicals and thereby minimizing cell damage and susceptibility to illness. Zinc and selenium aid these neutralizing processes.
Sources of Zinc and Selenium
Although zinc is essential to many cellular functions, the human body does not naturally produce zinc. It is obtained through the consumption of zinc-rich foods or through taking zinc supplements. Good food sources of zinc include liver, beef, chicken, legumes, some nuts, brown rice, milk, cheddar cheese and numerous herbs. Selenium is a trace element in a few feeds, primarily meats and a few grains produced in areas with selenium-rich soils. Nuts may also be good sources of selenium. A liquid vitamin is often recommended to ensure sufficient intake of selenium.
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