What complications arise from poorly controlled diabetes, and what evidence demonstrates that achieving target glycemic control reduces these risks and extends lifespan?

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Last updated: October 11, 2026 • View editorial policy

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DIABETES AWARENESS: TAKE CONTROL OF YOUR HEALTH

⚠️ WHAT HAPPENS IF YOU DON'T CONTROL YOUR DIABETES?

Poor blood sugar control damages your body every day. Here's what you're risking:

YOUR EYES

  • Diabetic retinopathy can lead to blindness
  • Damage to the tiny blood vessels in your retina
  • Risk increases dramatically with poor control

YOUR KIDNEYS

  • Diabetic kidney disease can progress to kidney failure
  • May require dialysis or kidney transplant
  • 25% reduction in kidney complications with good control 1

YOUR NERVES

  • Diabetic neuropathy causes pain, numbness, and tingling
  • Can lead to foot ulcers and amputations
  • Affects your ability to feel injuries

YOUR HEART & BLOOD VESSELS

  • 2-4 times higher risk of heart attack and stroke 2
  • Cardiovascular disease is the #1 cause of death in diabetes
  • Poor control accelerates artery damage

✅ THE GOOD NEWS: YOU CAN PREVENT THESE COMPLICATIONS!

Achieving target blood sugar levels (A1C < 7%) dramatically reduces your risk:

PROVEN BENEFITS OF GOOD CONTROL:

For Your Eyes, Kidneys & Nerves:

  • 50-76% reduction in microvascular complications 3
  • 60% reduction in retinopathy, nephropathy, and neuropathy 2
  • Benefits persist for decades, even if control slips later 1

For Your Heart:

  • 57% reduction in heart attacks and strokes with early intensive control 3
  • 33% reduction in heart attacks with metformin treatment 1
  • 13-27% reduction in death from all causes 4

The Earlier You Start, The Better:

  • Starting good control early in diabetes provides lifelong protection 5
  • Benefits continue for several decades after achieving control 3
  • Every 1% reduction in A1C reduces complications 6

🎯 YOUR TARGET: A1C LESS THAN 7%

What does this mean?

  • A1C of 7% = average blood sugar of 154 mg/dL 6
  • A1C of 6% = average blood sugar of 126 mg/dL 6
  • Lower is better for preventing complications 1

💪 YOU CAN LIVE A LONGER, HEALTHIER LIFE!

The evidence is clear: People with diabetes who maintain good blood sugar control:

  • Live longer lives 4
  • Have fewer complications 3
  • Maintain better quality of life 7
  • Reduce their risk of blindness, kidney failure, and amputations 1

📋 WHAT YOU NEED TO DO:

  1. Check your A1C every 3 months until at target, then every 6 months
  2. Take your medications as prescribed - they work!
  3. Monitor your blood sugar regularly
  4. See your doctor regularly for screening:
    • Eye exams annually
    • Kidney function tests annually
    • Foot checks at every visit
  5. Make lifestyle changes: healthy eating, physical activity, weight management

🔑 REMEMBER:

Every day of good blood sugar control protects your body from damage. The complications of diabetes are NOT inevitable - they are largely preventable with proper management 1, 3.

Don't wait until complications develop. Take control of your diabetes TODAY to protect your future.

Talk to your healthcare provider about your personal A1C target and how to achieve it safely.

References

6
Guideline

(6) glycemic targets.

Diabetes Care, 2015

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