With countless health trends and conflicting dietary advice, the question of what to eat for a longer, healthier life can feel overwhelming. However, research from GQ's comprehensive longevity study points to one universal principle: eliminate ultraprocessed foods. The Mediterranean Diet and Blue Zone populations consistently follow a simple blueprint—focus on minimally processed, whole foods like fruits, vegetables, whole grains, nuts, legumes, and seeds. As Harvard nutrition professor Dr. Frank Hu explains, "There is no one-size-fits-all diet that's best for everyone," but the path to longevity starts with one simple decision: choosing real food over processed alternatives.