Guido Van Hal is a medical sociologist with a Ph.D. in medical sciences (on breast and cervical cancer screening). He is a professor at the University of Antwerp, Belgium, Research Group Social Epidemiology and Health Policy, Department of Family Medicine and Population Health. Prof. Dr. Van Hal is working in the field of cancer screening (breast, colorectal, cervical, and lung cancer) and is currently a member of the Flemish Task Force for Lung Cancer Screening. He was a promoter of the Flemish pilot trial for colorectal cancer screening, and he is a member of the Flemish Task Force for Population Screening. Prof. Dr. Van Hal has been the promoter of several research projects on cancer screening such as GP target payment for breast cancer screening, non-participation in breast cancer screening, and drop-out in breast cancer screening. He was involved in the EPAAC (European Partnership for Action Against Cancer) and he has also performed research in tobacco prevention: cigarette plain packaging, 24-hour not smoking campaign, and more. He is a member of the Superior Health Council in Belgium. In addition, he has been working on potty training, which also led to several publications, and he did some large surveys in primary school children regarding happiness. At this moment, he is also the promoter of a study on infant mental health and of a study in minors and alcohol intoxication. He is also actively involved in the campaign for a smokefree generation in Belgium.