Over the last few decades, there has been increasing interest in the clinical association between hypertension and type-2 diabetes. Understanding why the two diseases commonly occur together is a major concern in the scientific community today. This book will help one understand the relationship between the diseases. It explains what oxidative stress is and how it contributes to the causes of the two diseases. The biomarkers that could easily alert clinicians on those at risk of the diseases are unveiled. Method on how the clinical association between the two diseases was established is explained extensively. The role of socio-economic status was not left out. The Results obtained were also discussed and recommendations made. The information in this book will be found useful in planning intervention healthcare preventive programs especially on public enlightenment to educate people globally on the importance of lifestyle modification, healthy diet and regular exercise. Anyone who may need to understand the correlation between hypertension and type-2 diabetes will find this book an indispensable asset.