Ultra-processed foods may fuel cognitive decline and obesity, study indicates Fox News senior medical analyst Dr. Marc Siegel joins 'Fox News Live' to discuss new concerns stemming from ultra-processed foods and early research into a potential Alzheimer's treatment. NEW You can now listen to Fox News articles! You might want to drop the bacon, because it might be the reason behind your bad knees, recent research suggests. Ultraprocessed foods have been studied extensively for their negative