Prof. Mariusz R. Wieckowski is leading expert in mitochondrial field, mitochondrial bioenergetics, oxidative stress and close interactions between endoplasmic reticulum and mitochondria in the context of several pathological situations. His recent research is focused on different aspects of intracellular oxidative stress and pharmacological toxicity to mitochondria (e.g., in the context of rare and metabolic disorders). Moreover, within the frame of Horizon 2020 program he is working on the role of mitochondria and oxidative stress in obesity development and progression.