Nutritional diversity fortifies immune health by providing a wide range of vitamins, minerals, and phytonutrients essential for optimal immunity. Different foods offer various protective compounds that work synergistically to strengthen immune responses. For instance, antioxidants found in colorful fruits and vegetables help combat oxidative stress, while probiotics from fermented foods support gut health, which is crucial for a well-functioning immune system. A varied diet promotes overall health and resilience, making it more effective against infections and illnesses.