Boosting the immune system with antioxidants: Where are we now?

Abstract

A strong immune system doesn't have to be just a dream. Over the last few decades, several strategies for boosting the immune system have been studied, with the aim of reducing the incidence and severity of infectious diseases. Furthermore, investigations into the possibility of improving the fight against cancer continue. Simple and powerful tools are already in our hands: the antioxidants. As we get older, or when we are particularly stressed, high levels of reactive oxygen species (ROS) accumulate, promoting oxidative stress and inflammation throughout the body. In this situation, normal body functions, in particular the immune systems, are severely impaired by an excess of oxygen radicals and pro-inflammatory molecules. For this reason, blocking the side effects of ROS with antioxidants may help us improve our immune system performance.