No coffee for six months, not even decaf. That's what participants of a trial looking into the effect on atrial fibrillation were asked to do. Also, could we be on the verge of changing guidelines for asthma care in children? Or is it too early to call? And catching cancer early can be important. How far away are we from harnessing blood, urine and even saliva tests to help? References PFAS inquiry hands down 47 recommendations to better regulate 'forever chemicals' in Australia - ABC News  The Lancet series on ultra-processed foods Orforglipron, an oral small-molecule GLP-1 receptor agonist, for the treatment of obesity in people with type 2 diabetes (ATTAIN-2): a phase 3, double-blind, randomised, multicentre, placebo-controlled trial Caffeinated Coffee Consumption or Abstinence to Reduce Atrial Fibrillation: The DECAF Randomized Clinical Trial Budesonide–formoterol versus salbutamol as reliever therapy in children with mild asthma (CARE): a 52-week, open-label, multicentre, superiority, randomised controlled trial