In recent times, some remarkable changes have been observed across the globe regarding the qualitative and quantitative expansion of internet and social media, with a large number of people addicted to social media. This work ascertained the impact of extensive social media usage on mental health among youths of Aflkpo South LGA. This study was anchored 011 Health Belief Model and adopted survey design using questionnaire for data collection. Sample size of 385 was drawn purposively. It was found that the undergraduates overstayed on social media*during the pandemic. It was also found that the youths of Afikpo South LGA stayed on social media for business transactions, romance/relationships, games/betting and sports activities among other things. It was further found that excessive stay on social media caused the undergraduates depression, anxiety, headache and insomnia during the. period. Among the recommendations is that parents should not allow their children to use the social media when they are not mature enough to avoid their being distracted by the glamour and fantasies of the social media.