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Probiotics May Boost Your Immune System

May 14, 2010

Scientists in Finland have discovered that cheese can help preserve and enhance the immune system of the elderly by acting as a carrier for probiotic bacteria—the good bacteria often available in the US in some brands of yogurt. The research, published in FEMS Immunology & Medical Microbiology, reveals that daily consumption of probiotic cheese helps to tackle age-related changes in the immune system. "The increase in the proportion of aged individuals in modern society makes finding innovative ways to thwart the deterioration of the immune system a priority," said lead author Dr Fandi Ibrahim from the University of Turku in Finland. "The intake of probiotic bacteria has been reported to enhance the immune response through other products and now we have discovered that cheese can be a carrier of the same bacteria." Dr Ibrahim's team believes that eating probiotic cheese very day can tackle the age-related deterioration of the immune system known as immunosenescene. When this deterioration occurs, the body is unable to kill tumor cells and reduces the immune response to vaccinations and infections. Infectious diseases, chronic inflammation disorders and cancer are hallmarks of immunosenescene. To test their theory that probiotic bacteria in cheese would have immune enhancing effects, the team targeted the gastrointestinal tract, which is the main entry for bacteria cells into the body through food and drink and is also the site where 70 percent of vital immunoglobulin cells are created. Volunteers ages 72 to 103, all of whom lived in the same care home, ate one slice of either placebo or probiotic Gouda cheese with their breakfast for four weeks. Blood tests where then taken to discover the effect of probiotic bacteria on the immune system. The results revealed a clear enhancement of natural and acquired immunity through the activation of NK blood cells and an increase in phagocytic activity. "We have demonstrated that the regular intake of probiotic cheese can help to boost the immune system and that including it in a regular diet may help to improve an elderly person's immune response to external challenges," concluded Ibrahim.