Probiotics for cold and flu

Probiotics stimulate the immune system and reduce cold and flu symptoms.  

In this study, 134 people with at least four colds or flu in the last year drank a placebo or a probiotic beverage containing lactobacillus paracasei, casei, and more, for 12 weeks. Eleven in the placebo group reported a fever plus cough, nasal congestion, or headache, compared to three in the probiotics group. Symptoms also lasted longer for placebo.

Doctors said blood tests suggest the probiotics benefit may come from an increase in interferon gamma levels, an immune response to viral and bacterial infections.

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