A new study reveals that human intestinal flora regulate the levels of the body’s main antioxidant, glutathione, which fights a host of diseases. The findings were published in Molecular Systems Biology and could lead to new probiotic-delivering foods, and a better understanding of the metabolic processes behind diseases such as type 2 diabetes. One of the researchers behind the study is Adil Mardinoglu, systems biology researcher at KTH Royal Institute of Technology and newly recruited SciLifeLab Fellow.