Humans have both born and acquired immunity. As multisystem organisms, we have lifelong functions. We're not the only bacteria on Earth; others live nearby. In a way, we're symbiotic with the other microorganism. Sometimes dominant species overrun the human body. Our immune system helps us prevent them. In modern times, nutrients and minerals improve COVID-19 immunity. Wuhan was the source of a 2020 pandemic virus. COVID-19 virus assaults the immune system and activates inflammatory modulators, harming the body. Multivitamins and micronutrients help boost the immune system, according to a scientist and his team. A, B, C, D, K, micro vitamins, zinc, salt, potassium, and calcium play a role in fatal diseases. This review focuses on nutrients' role in immunity and immune-related illnesses.