What is one of the symptoms of diabetes mellitus?

High blood sugar, also known as hyperglycemia, is a primary symptom of diabetes mellitus. This condition occurs when the body either does not produce enough insulin or cannot effectively use the insulin it produces, leading to elevated blood glucose levels. Over time, consistently high blood sugar can result in serious health issues, including damage to various organs and systems in the body.

In diabetes mellitus, the body's inability to regulate glucose properly can manifest through several symptoms, such as increased thirst, frequent urination, fatigue, and blurred vision. Recognizing high blood sugar as a symptom is crucial for early diagnosis and management of diabetes, which can involve lifestyle changes, medication, or insulin therapy, depending on the type and severity of the condition.

The other options, including enhanced vision, increased energy levels, and unusual weight gain, do not typically correlate with diabetes symptoms. Instead, individuals may experience blurred vision and decreased energy as side effects of uncontrolled blood sugar levels or other complications. Understanding these symptoms helps in identifying and managing the condition effectively.