My son is 19. Is CGM reliable for adjusting insulin safely?

Question

Hello doctor,

My son is 19 and has had type 1 diabetes since age 10. His recent HbA1c is 8.3 percent, even though we follow his insulin doses and meals carefully. He is on a basal–bolus insulin regimen and checks his glucose four to five times a day. My concerns are:

Would switching to an insulin pump help improve his control?
Is a continuous glucose monitor (CGM) reliable enough for adjusting insulin doses at home?
He sometimes experiences low blood sugar at night, and we want to reduce it safely. His endocrinologist also advised yearly screening for thyroid and celiac disease. Are these conditions linked to Type 1 diabetes?

We want to manage everything better for long-term.

Please help.

Thank you.

Answer 1

Hi,

Welcome to icliniq.com.

I understand your concern, and it is completely natural to feel worried when your child’s sugars stay higher than expected despite doing everything right.

An HbA1c of 8.3 percent shows that his overall control can still be improved, and an insulin pump can definitely help many children. Pumps deliver insulin continuously throughout the day and allow very precise basal and bolus adjustments. This flexibility often helps smooth out highs after meals and reduces the number of injections. Regular monitoring, however, is still essential even with a pump.

A continuous glucose monitor (CGM) is reliable for day-to-day decision-making at home. Because it tracks glucose levels under the skin around the clock, it can warn you of rapid rises, drops, or overnight lows. For young patients, this extra safety net is extremely helpful.

Night-time low sugars usually happen when the bedtime basal dose is slightly more than what the body needs. To understand his pattern, it is useful to check his glucose after dinner, around midnight, and again two hours later. These readings help the endocrinologist adjust his nighttime dosing more accurately and safely.

Your doctor’s advice about yearly screening is appropriate. Type 1 diabetes is an autoimmune condition, and children with it have a higher chance of developing other autoimmune disorders such as autoimmune thyroid disease and celiac disease. That’s why routine annual screening is recommended.

You are doing the right thing by staying proactive. With the right adjustments, better monitoring, and regular follow-ups, long-term control is definitely achievable.

Please feel free to follow up if you have any further questions.

Thank you.