Big data and machine learning techniques can be useful tools for health care marketers. Big data refers to large and complex data sets that are difficult to analyze using traditional methods. Machine learning allows systems to learn from data to discover relationships and make predictions. Bayes' theorem provides a framework to update probabilities based on new evidence or observations. Marketers can use these techniques to better understand customers, predict behaviors, and inform strategy through data-driven insights. Questions were invited on applications of these techniques for health care marketing.