Many of these essential trace elements are found in our daily diet.
Zinc is a very important nutrient for the immune system and is particularly characterized by its antiviral effect. Zinc deficiency manifests itself in severely weakened immune function. The best sources of zinc are pumpkin seeds, sesame seeds, seafood, beef, liver, spinach and cashews. But also lentils, cheese, oatmeal and eggs contain zinc. Zinc is better utilizable by the body from animal foods than from plant foods.
Like zinc, selenium is an important trace element and is involved in many processes in the body. Selenium is especially known for its antioxidant effects, which improve immune function. Good sources of selenium are Brazil nuts, eggs, beef, sardines and seafood.
Iron is a necessary nutrient for humans and also for pathogens. Iron levels should not be too high, but also not too low, as both can increase susceptibility to infection. Beef is the best source because iron from animal foods is much easier for the body to absorb. It is also possible to obtain iron from plant foods, such as sesame seeds, pumpkin seeds and spinach.