The proliferation of social media platforms has reshaped individual behaviours, particularly in relation to dietary practices, lifestyle habits, and body image perception. This study investigates the influence of social media usage on eating habits, lifestyle modifications, and body image perception among adults aged 20–40 years. A cross-sectional design was employed with a sample of 100 participants (50 males and 50 females) selected through purposive sampling. Data were collected using a structured questionnaire and analysed using SPSS (Version 25). Statistical tools included chi-square tests, Mann–Whitney U tests, and Spearman’s correlation. Findings reveal that higher social media usage is significantly associated with unhealthy eating behaviours, increased reliance on influencer-driven diets, negative body image perception, and reduced sleep duration. Participants with negative body image were more likely to engage in dietary experimentation and experience dissatisfaction linked to social media validation metrics. The study highlights the multidimensional impact of social media on behavioural and psychological outcomes and underscores the need for awareness and interventions to mitigate adverse effects.
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