The immune system plays a crucial role in fighting off infections, diseases and illnesses. However, sometimes it may become weak due to a number of factors such as stress, poor diet, lack of sleep and physical activity, and even genetics. This can make you more susceptible to illnesses and infections. To keep your immune system functioning optimally, it is important to include essential vitamins and minerals in your diet. If you are struggling to get enough of these nutrients from your diet, you may want to consider taking a vitamin and mineral supplement. In this article, we will discuss some essential vitamins and minerals that can help to boost your immunity.