WBEZ brings you fact-based news and information. Sign up for our newsletters to stay up to date on the stories that matter.Salmon, olive oil, red wine, soy and kale are foods that were all at one point celebrated as essential parts of a healthy diet, only to be knocked down a peg by that killjoy known as scientific research. New studies can make it hard to make decisions about nutrition. Will drinking coffee lower the risk for diabetes or lead to a heart attack? Now, bacon, ham, and sausage are in the crosshairs, thanks to a new report from the World Health Organization that links processed meat with cancer. We talk to a dietician about the study. Then, one of the UK’s top chef’s and restaurateurs Yotam Ottolenghi discusses his new cookbook, which adds some Asian flavors to his Mediterranean repertoire. Plus, we hear the acoustic guitar interplay of James Elkington and Nathan Salsburg.