08 Apr 2020 --- Global focus on immunity has never been stronger as the COVID-19 pandemic continues to wreak havoc across the globe. While there is no substitute for medical care and taking measures such as handwashing and social distancing, many consumers are still seeking to strengthen their immune systems. NutritionInsight takes a closer look at how zinc has emerged as a so-called hot ingredient on the market, thanks to its contribution to both the innate and adaptive immune systems, which are the body’s first and second lines of defenses, respectively.