最新研究显示，早上一杯咖啡，可以显著改善情绪

Core Viewpoint - Coffee is one of the most popular beverages globally, with 80% of adults consuming at least one caffeinated drink daily, leading to an estimated consumption of 3 billion cups of coffee each day. Recent studies have shifted the perception of coffee from potentially harmful to beneficial, highlighting various health benefits associated with regular coffee consumption, including reduced all-cause mortality and lower risks of several diseases [3][4]. Group 1 - A recent study published in Scientific Reports indicates that regular caffeine consumers experience improved mood after consuming caffeinated beverages, with the effect being more pronounced in the morning [4][6]. - The study involved 236 young participants over four weeks, who reported their emotions and caffeine intake via smartphone surveys, focusing on real-life caffeine consumption rather than controlled lab settings [6][7]. - Results showed a significant correlation between caffeine intake and increased positive emotions, particularly within the first 2.5 hours after waking up, while the relationship with reduced negative emotions was weaker and consistent across different demographic groups [6][7]. Group 2 - Researchers attribute the mood-enhancing effects of caffeine in the morning to its ability to block adenosine receptors, promoting alertness and vitality, and increasing dopamine activity in key brain areas associated with improved mood and alertness [7]. - The authors of the study caution that caffeine can lead to dependence and excessive intake may pose health risks, particularly if consumed in the evening, which could disrupt sleep [8].