Which one of these is known as the "silent killer" because it can go on for years without any symptoms?

Hypertension, commonly referred to as high blood pressure, is often labeled the "silent killer" due to its frequent absence of symptoms over long periods. Many individuals are unaware they have high blood pressure until they undergo routine screenings or begin to experience severe complications, such as heart disease or stroke. This lack of symptoms allows hypertension to progress unchecked, making it particularly dangerous.

Other conditions listed can manifest symptoms more noticeably or have identifiable early signs. For example, diabetes might present symptoms such as increased thirst or frequent urination, anemia can result in fatigue or weakness, and hypoglycemia typically triggers immediate physical symptoms when blood sugar levels drop. In contrast, hypertension's stealthy nature is what earns it this alarming moniker, emphasizing the importance of regular health check-ups for early detection and management.