Hypertension, or high blood pressure, affects nearly half of adults worldwide, as reported by the World Health Organization (WHO). While its effects on cardiovascular health are well-known, the impact of hypertension on cognitive function often goes unrecognized. Mounting evidence indicates that prolonged high blood pressure can lead to significant cognitive decline, affecting memory, decision-making, and overall brain health. This article serves as a guide to understanding the relationship between hypertension and cognitive function, identifying warning signs, and adopting strategies to address and mitigate cognitive decline.