Alejandro de la Sierra is Research Director of the Hypertension Unit at the Hospital Clinic, University of Barcelona, Spain. He also serves as Consultant in the Department of Medicine at the same hospital and as Associate Professor at the University of Barcelona, Spain. Dr de la Sierra has participated as a faculty member in Spanish, European and international meetings devoted to hypertension and is a member of several scientific societies, including the International Society of Hypertension (ISH), the European Society of Hypertension (ESH) and the American Heart Association (AHA). He is Co-ordinator of Medical Education in the Spanish Society of Hypertension and President of the Catalan Society of Hypertension. His main areas of research are the study of erythrocyte ion transport systems, the mechanisms of the pressor effect of salt intake, endothelial dysfunction and the determinants of subclinical target organ damage. He has published more than 100 original papers in international peer-reviewed journals, as well as editorials, reviews and commentaries. He has also contributed to national and international meetings with lectures and oral and poster presentations. Dr de la Sierra received his MD in 1981 from the School of Medicine at the University of Barcelona and his PhD in 1987 from the same university. Between 1987 and 1988 he worked as a Research Fellow at the Hospital Necker in Paris.