Community Answer

Answered by Dr. Emily Carter, MD 🩺

A blood sugar level of 200 mg/dL or higher can be dangerous, especially if it persists. Here’s what you need to know:

  • Normal Range: Fasting blood sugar should be below 100 mg/dL. After meals, it should be below 140 mg/dL.
  • Danger Zone: A reading of 200 mg/dL or higher, especially if fasting, may indicate diabetes or poor blood sugar control.
  • Symptoms: High blood sugar can cause symptoms like frequent urination, increased thirst, fatigue, and blurred vision.
  • Action Steps: If your blood sugar is consistently 200 mg/dL or higher, consult a healthcare provider immediately. They may recommend lifestyle changes, medication, or further testing.

Persistently high blood sugar can lead to serious complications like nerve damage, kidney disease, and cardiovascular issues.

Last updated: 1/12/2025

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