Oxidative stress, which is caused by the effect of many factors in living organisms, must be constantly balanced by the antioxidant system. The continuous formation of free oxygen radicals for many reasons, especially aerobic respiration, increases oxidative stress. The antioxidant system is formed by various enzymes, vitamins and many other structures. All these antioxidant structures are constantly working to neutralize oxidative stress products and to establish a balance. In order to maintain the oxidantantioxidant balance, lifestyle changes such as healthy and balanced nutrition and increasing mobility are of great importance in living organisms. Today, oxidative stress and antioxidants are frequently measured both in various experimental models established in experimental animals and in clinical studies, which is becoming increasingly important. For this reason, oxidant-antioxidant balance indicator parameters are very valuable in scientific research. In addition, newly established different in vivo models have started to measure oxidative stress and antioxidant status. For this reason, our internationally indexed journal TJHS will give priority to scientific research on oxidant-antioxidant balance and publish current scientific developments in this field.