Oxidative stress: Less harmful than suspected?

Arterial calcification and coronary heart disease, neurodegenerative diseases such as Parkinson's and Alzheimer's, cancer and even the aging process itself are suspected to be partially caused or accelerated by oxidative stress. Oxidative stress arises in tissues when there is an excess of what are called reactive oxygen species (ROS). "However, up to now, nobody was able to directly observe oxidative changes in a living organism and certainly not how they are connected with disease processes," said Associate Professor (PD) Dr. Tobias Dick of DKFZ. "There were only fairly unspecific or indirect methods of detecting which oxidative processes are really taking place in an organism."

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