Researchers at Cincinnati Children’s Hospital Medical Center have conducted the first study to detect the presence of a protein in human milk that may explain the association between breastfeeding and reduced risk of obesity later in life.The protein is adiponectin, which is secreted by fat cells and affects how the body processes sugars and lipids -- fatty substances in the blood. It’s been suggested that adiponectin is involved in the metabolic syndrome, which includes insulin resistance, obesity, type 2 diabetes and coronary artery disease and occurs in 20-25 percent of adults. Higher levels of adiponectin have been associated with less disease.