Your own immune system
is your body's natural defense against diseases, including cancer. Your
immune system also defends your body against infections and other side
effects of cancer treatment. A strong immune system detects the difference
between healthy cells and cancer cells, and it can get rid of those that
become cancer. The immune system can be strengthened and improved by new
biological therapies. These treatments are designed to repair, stimulate,
or increase your body's natural ability to fight infections and cancer.
Medical researchers
are looking at many types of biological therapies that use and boost the
substances produced naturally by the body's own cells. They are also creating
new substances that can imitate or help the body's natural immune system
to work against infection and disease. These are being used in clinical
trials with chemotherapy and radiation therapy.
POSSIBLE
PROBLEMS: Biological therapies
may produce side effects such as rashes or swellings at the site where
shots are given; flu-like symptoms, including fever, chills and fatigue;
digestive tract problems; or allergic reactions.
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