This book explores in depth hypertension, a common and often silent medical condition. It begins with an overview of hypertension, highlighting its significant impact on cardiovascular health. The biological and physiological mechanisms of hypertension are detailed, highlighting the crucial role of the renin-angiotensin system and the vascular endothelium. The impact of diet is examined, with a focus on salt, saturated fats, fruit, vegetables and sweetened beverages. Lifestyle factors, including physical activity, stress management and smoking cessation, are also discussed for their influence on blood pressure. In conclusion, this book offers recommendations for the prevention and management of hypertension, encouraging healthy lifestyle habits and regular medical follow-up to improve overall cardiovascular health.