Mobile health clinics have been increasingly utilised in underserved communities to address chronic diseases among urban youth. A longitudinal study design was employed with a sample size of 500 participants randomly selected from three urban areas. Data were collected through self-reported surveys and medical check-ups over two years. During the follow-up period, there was a statistically significant decrease in reported high blood pressure (p < .05) among clinic users compared to non-users. Mobile health clinics significantly improved chronic disease management outcomes among urban youth in Cape Town. Further research should explore long-term effects and scalability of mobile health services. chronic diseases, urban youth, mobile health clinics, longitudinal study Treatment effect was estimated with $\text{logit}(p_i)=\beta_0+\beta^\top X_i$, and uncertainty reported using confidence-interval based inference.