Shaky Gestational Diabetes?



QUESTION:


If you have gestational diabetes, should you feel shaky while following a low-sugar, low-carbohydrate diet?





Quick Answer


No. Shakiness is not a normal part of a gestational-diabetes diet. Check glucose immediately. Below 70 mg/dL or 3.9 mmol/L is hypoglycemia and needs treatment. With normal glucose, causes may include too little food, dehydration, anxiety, anemia or low blood pressure. Pregnancy nutrition should control—not eliminate—carbohydrate.




Answer by Dr. Albana Greca, MD, MMedSc



Hello,



Shakiness deserves attention, but symptoms alone cannot confirm low glucose. Measure during the episode.



What Counts as Low Blood Sugar?



Hypoglycemia means glucose below 70 mg/dL or 3.9 mmol/L. Symptoms include:




  • Shaking, sweating or a fast heartbeat

  • Hunger, weakness or dizziness

  • Headache, blurred vision or difficulty concentrating

  • Irritability, confusion or unusual behavior



Meal planning alone rarely causes true hypoglycemia. Risk rises with insulin or glyburide, skipped meals, severe carbohydrate restriction or extra activity.



Review our low blood sugar causes guide.



What to Do During Shakiness




  1. Sit somewhere safe and check glucose immediately.

  2. If it is below 70 mg/dL, take about 15 grams of fast-acting carbohydrate.

  3. Recheck after 15 minutes and repeat if it remains below 70.

  4. After recovery, eat the planned meal or a balanced snack if the next meal is not soon.



About 15 grams can come from glucose tablets, 4 ounces or 120 mL of juice, or regular soda. Chocolate is slower because of its fat.




Emergency: If unconscious, seizing or unable to swallow, give nothing by mouth. Use glucagon if prescribed and call emergency services.




Do Not Follow an Extremely Low-Carb Pregnancy Diet



Gestational-diabetes nutrition adjusts carbohydrate amount, type and timing; it does not eliminate it. ADA’s 2026 guidance cites a pregnancy minimum of about 175 grams daily, distributed individually.



Very-low-carbohydrate and ketogenic diets are not recommended in pregnancy because they may limit energy and nutrients and increase ketones.



Choose vegetables, measured whole grains, beans, fruit and dairy instead of sweets and sugary drinks. See our treatment guide.



Eat Regularly



ACOG commonly recommends three meals and two or three snacks daily to avoid large peaks and long fasting periods.



Combine measured carbohydrate with protein or healthy fat, for example:




  • Whole-grain toast with egg

  • Plain yogurt with a measured portion of berries



  • A small whole-grain portion with chicken, fish, tofu or cheese



Breakfast carbohydrate may need to be lower because morning insulin resistance is often stronger, but it should not be removed.



Pregnancy Glucose Targets



Common gestational-diabetes targets are:




  • Fasting: Below 95 mg/dL or 5.3 mmol/L

  • One hour after starting a meal: Below 140 mg/dL or 7.8 mmol/L

  • Two hours after starting a meal: Below 120 mg/dL or 6.7 mmol/L



Your maternity team may set different targets. See our pregnancy target discussion.



What If Glucose Is Normal During the Episode?



With normal glucose, consider:




  • Long gaps between meals or insufficient total calories

  • Dehydration, overheating or standing for a long time

  • Anxiety, panic or excess caffeine



  • A rapid fall from a high level while still above 70



Record glucose, food, activity, treatment and symptom duration. Discuss recurrent episodes rather than treating normal glucose with sweets.



Review Insulin or Other Medicine



With insulin, the dose, timing, meals or activity may need adjustment. Do not reduce or skip it independently.



Metformin alone rarely causes lows, while glyburide can. Bring your glucose log and medicines for review.



Ketones and Illness During Pregnancy



Pregnancy increases ketosis risk. Contact the maternity team for vomiting, poor intake, illness, high glucose or positive ketones. DKA may occur at lower glucose than expected.




Seek urgent care for repeated vomiting, abdominal pain, deep breathing, moderate or large ketones, confusion, fainting, reduced fetal movement, bleeding or fluid leakage.




Practical Next Steps




  1. Check and record glucose whenever shakiness begins.

  2. Treat only confirmed glucose below 70 mg/dL with fast carbohydrate.

  3. Stop severe carbohydrate restriction and request a pregnancy meal plan.

  4. Review insulin or medicine timing with the maternity team.

  5. Arrange assessment if symptoms recur despite normal glucose.



Related Questions





Related Pages





This answer does not replace individualized pregnancy diabetes care.


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