Metabolic syndrome involves high blood pressure, putting on extra weight around the middle of the body, and problems with glucose and insulin metabolism. Taking probiotics may help correct metabolic syndrome, and improve digestion.
A healthier digestive system and relief of metabolic syndrome can be vitally important for your immune system as well. That's because about 80 percent of your immune system is in the digestive system. And your immune system is what protects you from disease.
"As you probably know, metabolic syndrome and obesity are closely linked, and it actually makes sense that probiotics could help improve both of these conditions, since both are caused by a diet high in sugars and unhealthy fats (think processed trans fat, not saturated fat), which leads to insulin resistance, fuels the growth of unhealthy bacteria, and packs on excess weight."
Adding probiotics will work best if you avoid processed foods, which will otherwise continue to contribute to the unhealthy intestinal bacteria balance.
http://articles.mercola.com/sites/articles/archive/2010/05/13/probiotics-benefit-metabolic-syndrome-patients.aspx