What is the subject of concern regarding tobacco use among teenagers mentioned in the text?

Rising tobacco usage rates among teenagers is a critical concern because this demographic is particularly vulnerable to developing lifelong habits. Increased rates of tobacco use can lead to a variety of negative health outcomes, including addiction, respiratory problems, and risk of developing chronic diseases later in life. Public health initiatives often focus on addressing this trend, as early use can set the stage for continued tobacco dependence. Understanding the urgency of rising usage rates among adolescents highlights the need for preventive measures, education, and awareness campaigns aimed at reducing the risk factors associated with tobacco use during these formative years.