FOMO, or Fear of Missing Out, negatively impacts mental health by causing chronic anxiety, stress, and feelings of inadequacy. Constantly seeing others' seemingly perfect lives on social media can lead to comparison, decreased self-esteem, and dissatisfaction with one's own life. This perpetual worry about missing out on experiences or opportunities can also result in social withdrawal, depression, and a diminished sense of well-being, perpetuating a cycle of negative emotions.