Home > Diet and nutrition > The immune system 23 April 2007 Signs of immune system problems What are the signs that your immune system is battling to ward off micro-organisms that are attacking your body? 0 Vit & Min doses per day » Count calories in food » Is my vegetarian diet balanced? » Ask The Dietitians » 10 foods to boost your immune system Your quick guide to Banting The immune system protects the body from substances that could be harmful, such as toxins, cancer cells, and blood or tissues from another person. Immunodeficiency causes continuous or recurring infections. These are serious infections caused by organisms that are normally mild. Opportunistic infections are infections that are widespread and controllable, but seriously affect someone whose immmune response is lacking. Incomplete recovery or weak response to treatment of infections. Needing several courses of antibiotics to clear up an infections could be a sign of poor immune response. An increase in the incidence of certain cancers, such as Kaposi's sarcoma or non-Hodgkin's lymphoma. The presence of tumours could also reflect poor immune responses. Recurring yeast infections could be a sign of immune system trouble. Ongoing and recurring respiratory infections, such as bronchitis and pneumonia could indicate immune system problems. Delayed or incomplete recovery from illnesses, from which others may be recovering far more quickly. NEXT ON HEALTH24X 7 healthy swaps for everyday foods and drinks 2020-01-15 14:15 More: Diet and nutritionThe immune system advertisement Read Health24’s Comments Policy Comment on this story 0 comments Comments have been closed for this article. Logout Comment 0 characters remaining Share on Facebook Loading comments... Live healthier Lifestyle » E-cigarettes: Here are five things to know E-cigarettes have become hugely popular in the past decade, but a rash of vaping-linked deaths and illnesses in the US is feeding caution about a product that's already banned in some places. Allergy » Ditch the itch: Researchers find new drug to fight hives A new drug works by targeting an immune system antibody called immunoglobulin E, which is responsible for the allergic reaction that causes hives.