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[ad_1] The preclinical study, published in Science Immunology on March 15, showed that bacteria abundant in the guts of newborns produce serotonin, which promotes the development of immune cells called T-regulatory cells or Tregs. These cells suppress inappropriate immune responses to help prevent autoimmune diseases and dangerous allergic reactions to harmless food items or beneficial gut microbes. "The gut is now known as the second human brain as it makes over 90 percent of the neurotransmitters in the human body. While neurotransmitters such as serotonin are best known for their roles in brain health, receptors for neurotransmitters are located throughout the human body," explained the study's senior author, Dr. Melody Zeng, an assistant professor of immunology in the Gale and Ira Drukier Institute for Children's Research and the Department of Pediatrics at Weill Cornell Medicine. Gut Bacteria in Babies Provide a Helping Hand The researchers observed t...

[ad_1] Researchers have discovered a link between the levels of certain bacteria living in the gut and coronary atherosclerotic plaques -- which are formed by the build-up of fatty and cholesterol deposits, constitute a major cause of heart attacks.  Researchers at Uppsala and Lund University in Sweden analysed gut bacteria and cardiac imaging among 8,973 participants aged 50 to 65 from without previously known heart disease.  The findings, published in the scientific journal Circulation, revealed that oral bacteria, especially species from the Streptococcus genus, are associated with increased occurrence of atherosclerotic plaques in the small arteries of the heart when present in the gut flora.  cre Trending Stories “Species from the Streptococcus genus are common causes of pneumonia and infections of the throat, skin and heart valves. We now need to understand whether these bacteria are contributing to atherosclerosis development,” said Tove Fall, Professor in Mol...