Caffeine is one of the most studied ingredients in the food supply. It has been consumed safely in foods and beverages for centuries. However, the widespread consumption of many caffeinated foods and beverages keeps caffeine in the spotlight, and questions about caffeine persist, including those centering on adverse effects on hydration, addiction, miscarriage, and osteoporosis. While some conflicting research on caffeine and health has emerged in recent years, the majority of the research on caffeine and health conducted over several decades shows that moderate amounts of caffeine are safe. The following resources provide balance and insight for consumers, health professionals, and journalists on the many different areas of caffeine and health.