TU Graz Sep 9 2025 In addition to cholesterol, the amino acid homocysteine also plays a role in aortic stiffening. Researchers from Graz University of Technology, the University of Graz and the Medical University of Graz were able to prove this in a new study. Cardiovascular diseases remain the most common cause of death worldwide. In Europe, they account for over 40 percent of all deaths. However, known risk factors such as high cholesterol levels or high blood pressure cannot fully explain