The role of processed foods in a healthy diet.Holli Ryan, RD, LD/N is a food and nutrition expert, registered and licensed dietitian-nutritionist, health and wellness writer, blogger, and social media specialist.Are processed foods bad for you? It turns out, it depends on the level of processing, preservatives and other additives. On this show Drs. Mike and Crystal sit down with registered dietitian Holli Ryan, RD, LD/N to uncover the impact of overconsuming processed foods and tips to cut out health-harming additives.