Research has found, a piece of cheese a day could keep the doctor away. Scientists say cheese can boost the immune system of the elderly by acting as a carrier for so-called 'good' bacteria. <br/><br/>A team from Finland's Turku University concluded that a daily portion of probiotic cheese can slow the degeneration of our bodies known as immunosenescene, which makes it much harder to fight infections and respond to vaccinations. <br/><br/>The researchers asked volunteers aged between 72 and 103 to eat one slice of either placebo or probiotic Gouda cheese with their breakfast for four weeks. <br/><br/>Tests found that those eating the probiotic cheese had a dramatically increased number of white blood cells – which help fight infection. Lead researcher Dr Fandi Ibrahim said in the journal Immunology and Medical Microbiology that regular probiotic cheese was an innovative way to boost the immune system.