Why is my blood sugar level higher first thing in the morning ?

by Leilani




Question: What can I take to help with high blood sugar when I wake up so I can have normal readings? I do not want medicines because I am allergic to all the medicines my doctor has prescribed, and she is talking about putting me on insulin. I do not want insulin.


Can you recommend an alternative? I am 70 years old. My doctor told me uncontrolled high blood sugar can increase my risk of stroke or heart attack. My sugar is not high all day; it is mainly high when I get up. My fasting blood work is therefore always high. Two weeks ago my A1C was 7.7%, with an estimated average glucose of 174 mg/dL. Please help.



Quick Answer


High morning glucose may be caused by the dawn phenomenon, a late meal or snack, poor sleep, illness, steroid medicines, or diabetes treatment wearing off overnight. However, an A1C of 7.7% reflects glucose over two to three months, so the problem is probably not limited to one morning reading.


Do not replace prescribed treatment with cinnamon, bitter melon, gymnema, fenugreek, or another supplement. Ask your doctor or pharmacist to review the exact reaction caused by each medicine, because a side effect is not always a true allergy. Other medicine classes or a simple once-daily basal insulin plan may still be safe. Insulin is not a punishment or a sign of failure.



Get Urgent Help When Needed


Seek urgent care for very high glucose with vomiting, inability to keep fluids down, confusion, severe weakness, deep or difficult breathing, chest pain, fainting, or moderate/large ketones. Call emergency services for facial drooping, arm weakness, speech difficulty, or other possible stroke symptoms.



Answer by Dr. Albana Greca Sejdini, MD


Blood sugar can rise before breakfast even though you have not eaten. During the early morning, hormones such as cortisol and growth hormone signal the liver to release glucose to prepare the body to wake. In diabetes, the available insulin may not be enough to control this release. This is called the dawn phenomenon.


Other possibilities include glucose remaining high after dinner, a bedtime snack, medication wearing off, missed treatment, infection, pain, dehydration, poor sleep, sleep apnea, stress, or steroid treatment.



What Does an A1C of 7.7% Mean?


An A1C of 7.7% corresponds to an estimated average glucose near 174 mg/dL. It cannot be explained by one isolated fasting result. Glucose may also be rising after meals or overnight without being captured by occasional finger-stick checks.


At age 70, the A1C goal should be individualized. For a generally healthy and independent older adult, a goal below about 7.0–7.5% is often considered. For someone with frailty, significant medical problems, cognitive or functional limitations, or a high risk of hypoglycemia, a goal below about 8.0% may be safer. Therefore, 7.7% may be above goal for one person and reasonable for another.



How to Find the Cause of Morning Highs


For several days, record glucose two hours after dinner, at bedtime, and on waking. Also record dinner time, bedtime snacks, sleep quality, illness, activity, and medication timing. Your clinician may recommend an overnight check or a short period using a continuous glucose monitor.



  • High at bedtime and in the morning: dinner, snacks, illness, or insufficient treatment may be contributing.

  • In range at bedtime but rising toward morning: dawn phenomenon or medication wearing off is more likely.

  • Low overnight followed by a high morning reading: treatment may need adjustment; do not assume a bedtime snack is the answer without professional review.



Review the Reported Medicine Allergies


Write down each medicine name, dose, timing, and exact reaction. Rash, facial swelling, breathing difficulty, nausea, diarrhea, dizziness, and low blood sugar are not the same problem and require different decisions. A pharmacist, endocrinologist, or allergy specialist may help distinguish a true allergy from intolerance or a predictable side effect.


There are several diabetes medicine classes. Kidney function, heart disease, weight, dehydration risk, infections, cost, and previous reactions determine which options are suitable. Do not restart or stop a medicine without the prescriber’s guidance.



Should Insulin Be Avoided?


Insulin may be recommended when tablets are not tolerated, are unsafe, or do not provide adequate control. For some older adults, a once-daily basal insulin is simpler than taking several tablets. The starting dose and adjustment plan must be individualized to reduce hypoglycemia risk.


Ask your clinician to explain why insulin is being proposed, what noninsulin options remain, how often testing would be required, and how low glucose would be prevented and treated. A supervised trial may be safer than leaving glucose persistently above the agreed target.



Food, Activity, and Sleep



  • Avoid large late dinners, sugary drinks, and frequent refined-carbohydrate snacks.

  • Do not skip dinner or live on vegetable soup unless a dietitian has designed that plan.

  • Combine a measured carbohydrate portion with vegetables, protein, and healthy fat.

  • A short walk after dinner may help when it is safe for your heart, balance, joints, and feet.

  • Ask about sleep apnea if you snore loudly, stop breathing during sleep, or remain very sleepy during the day.



Why Herbs Are Not a Safe Substitute


Cinnamon, bitter melon, gymnema, and fenugreek have not been proven to replace diabetes medicine or insulin. Concentrated supplements can interact with medicines, lower glucose unpredictably, or affect the liver or kidneys. Product strength and purity also vary. Food-level culinary use is different from taking a concentrated extract.



What to Ask at the Next Appointment



  1. What fasting and A1C targets are appropriate for my overall health?

  2. Which reactions were true allergies and which were side effects?

  3. What are my kidney function, urine albumin, blood pressure, and cholesterol results?

  4. Would overnight checks or a temporary CGM identify dawn phenomenon?

  5. Which noninsulin options remain, and would once-daily basal insulin be the simplest safe plan?



Bottom line: Morning highs may have a specific overnight cause, but an A1C of 7.7% shows that the overall treatment plan deserves review. The safest alternative is not an herb; it is a personalized plan based on the exact medication reactions, kidney and heart health, glucose pattern, and risk of low blood sugar.



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References




Answered by: Dr. Albana Greca Sejdini, MD, MMedSc, Family Physician
Medically reviewed by: Dr. Ruden Cakoni, MD, Endocrinologist
Last medically reviewed: July 2026

Educational only—not personal medical advice. Diagnosis and treatment should come from a qualified clinician who knows the patient’s medical history.


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