The immune system is a group of tissues, cells and organs that defend the body against harmful organisms such as parasites, bacteria, viruses and fungi that can cause disease. Harmful organisms exist in the human body constantly at low levels, but when the immune system is compromised, they can cause disease, according to the National Institute of Allergy and Infectious Diseases. Factors such as stress, poor diet and lack of exercise can lead to a compromised immune system. Taking nutritional supplements can help bolster the immune system and bring into balance the organisms in the body. Be sure to consult a health care practitioner prior to using supplements.
Astragalus
Astragalus is native to China and has long been used in traditional Chinese medicine. Historically, astragalus has been used in combination with other herbs to support and enhance the immune system. It is often used to prevent and treat upper respiratory infections and the common cold, according to National Institutes of Health National Center for Complementary and Alternative Medicine. The active medicinal components of astragalus are found in the plant's root, which can be taken as teas, extracts or capsules.
Cat's Claw
Cat's claw is native to Central and South America and has long been used as a medicinal herb in support of the immune system. In fact, the use of astragalus goes back as far as the Inca civilization, according to National Institutes of Health Office of Dietary Supplements. The active components of cat's claw are found in the inner bark of the plant, which is used to make liquid extracts, capsules and teas. Side effects are rare but sometimes occur, and may include dizziness, vomiting and headaches.
Probiotics
Beneficial bacteria are essential to the proper development of the immune system. They protect against harmful organisms that could cause disease and aid in the digestion of food and the absorption of nutrients. Additionally, there are cells in the digestive tract that are connected to the immune system. When probiotic bacteria are in contact with these cells, the immune system's defenses are bolstered, according to National Institutes of Health National Center for Complementary and Alternative Medicine. An example of probiotic bacteria is lactobacillus acidophilus.
References
- National Institutes of Health: National Center for Complementary and Alternative Medicine: Astragalus
- National Institute of Health Office of Dietary Supplements: Cat's Claw
- National Institutes of Health National Center for Complementary and Alternative Medicine: Probiotics
- National Institute of Allergy and Infectious Diseases: Immune System
