Junk food is defined as high-calorie food that is low in nutritional value, such as pasta, burgers, pizzas, chips, and sweets. The document chooses to focus on the topic of junk food and fast food because of their prevalence in modern society and the health risks and consequences of overconsumption. The methods of technology watch proposed to stay informed on this topic include Google Alerts, newsletters from advocacy groups, and RSS feeds from health and nutrition websites.