What Does Low Blood Sugar (Hypoglycemia) Feel Like? Causes and Treatment

23 Aug 2025

What Does Low Blood Sugar (Hypoglycemia) Feel Like? Causes and Treatment Low blood sugar, also known as hypoglycemia, occurs when the level of glucose...

What Does Low Blood Sugar (Hypoglycemia) Feel Like? Causes and Treatment

Low blood sugar, also known as hypoglycemia, occurs when the level of glucose (sugar) in your blood drops too low. This can happen for a variety of reasons, and understanding the symptoms, causes, and treatments is crucial for managing your health. In this article, we'll delve into what hypoglycemia feels like, what causes it, and how it can be treated effectively.

What Does Hypoglycemia Feel Like? Recognizing the Symptoms

The experience of low blood sugar can vary from person to person, and the severity of symptoms can range from mild to severe. It's vital to be aware of the common signs and symptoms to recognize and address hypoglycemia promptly.

Here are some common symptoms associated with low blood sugar:

  • Shakiness: Feeling shaky or trembling, even when you’re at rest.
  • Sweating: Unexplained sweating, especially cold sweats.
  • Dizziness or Lightheadedness: Feeling unsteady or like you might faint.
  • Hunger: An intense craving for food, often sweets.
  • Irritability or Anxiety: Feeling unusually anxious, nervous, or irritable.
  • Confusion: Difficulty thinking clearly or concentrating.
  • Rapid Heartbeat: Feeling like your heart is racing or pounding.
  • Blurred Vision: Temporary vision problems, such as blurred or double vision.
  • Weakness or Fatigue: Feeling tired or lacking energy.
  • Headache: A persistent or throbbing headache.

In more severe cases, hypoglycemia can lead to:

  • Loss of Coordination: Difficulty with balance and coordination.
  • Seizures: Uncontrolled muscle spasms.
  • Loss of Consciousness: Passing out or becoming unresponsive.

It's important to note that some people may not experience any noticeable symptoms (hypoglycemia unawareness), making it even more critical to monitor blood sugar levels regularly, especially if you have diabetes or are at risk.

Causes of Hypoglycemia: Understanding the Triggers

Several factors can contribute to low blood sugar levels. Identifying the cause of your hypoglycemia is essential for effective management and prevention.

Here are the most common causes:

  • Diabetes Medications: Insulin and certain oral diabetes medications (like sulfonylureas) can sometimes cause blood sugar to drop too low, especially if the dosage is incorrect or if meals are skipped.
  • Skipping Meals or Not Eating Enough: Not consuming enough carbohydrates to match your medication dosage or activity level can lead to hypoglycemia.
  • Intense Exercise: Physical activity, especially intense or prolonged exercise, can use up glucose faster than normal, potentially leading to a drop in blood sugar.
  • Alcohol Consumption: Alcohol can interfere with the liver's ability to release glucose into the bloodstream, causing hypoglycemia, particularly if consumed on an empty stomach.
  • Certain Medical Conditions: Less commonly, certain medical conditions such as liver or kidney disorders, hormone deficiencies (like cortisol or growth hormone), and insulinomas (tumors in the pancreas that produce excess insulin) can cause hypoglycemia.
  • Reactive Hypoglycemia: This type of hypoglycemia occurs within a few hours after eating a meal, often high in carbohydrates. It's typically caused by an overproduction of insulin in response to the meal.
  • Gastric Bypass Surgery: Some individuals who have undergone gastric bypass surgery may experience hypoglycemia due to altered digestion and absorption of nutrients.

Treatment for Hypoglycemia: Immediate and Long-Term Strategies

Treating hypoglycemia involves quickly raising your blood sugar levels and then addressing the underlying cause to prevent future episodes.

Related reading: The Beginner S Guide To Checking Blood Sugar At Home

Immediate Treatment: The 15-15 Rule

The "15-15 rule" is a widely recommended approach for treating mild to moderate hypoglycemia:

  1. Check Your Blood Sugar: If possible, use a blood glucose meter to confirm that your blood sugar is indeed low (typically below 70 mg/dL).
  2. Consume 15 Grams of Fast-Acting Carbohydrates: Choose one of the following options:

    • 3-4 glucose tablets
    • ½ cup (4 ounces) of juice (apple, orange, or grape)
    • ½ can (4 ounces) of regular (non-diet) soda
    • 1 tablespoon of honey or syrup
    • Hard candies (check label for carbohydrate content, and adjust amount accordingly)
  3. Wait 15 Minutes and Recheck Your Blood Sugar: After 15 minutes, check your blood sugar level again.

  4. Repeat if Necessary: If your blood sugar is still below 70 mg/dL, repeat the 15-15 rule.
  5. Eat a Meal or Snack: Once your blood sugar is back in a safe range, eat a meal or snack that contains both carbohydrates and protein to stabilize your blood sugar levels and prevent another drop.

For severe hypoglycemia (loss of consciousness or seizure), the individual will need assistance from someone else. If a glucagon emergency kit is available, administer it according to the instructions. Glucagon is a hormone that helps raise blood sugar levels quickly. Call emergency services (911) immediately.

Long-Term Management: Preventing Recurrent Episodes

Addressing the underlying cause of your hypoglycemia is critical for long-term management. Here are some strategies for preventing future episodes:

Related reading: How To Check Your Blood Sugar Level Correctly At Home

  • Adjust Diabetes Medications: Work closely with your healthcare provider to adjust the dosage or timing of your diabetes medications to minimize the risk of hypoglycemia.
  • Consistent Meal Timing: Eat meals and snacks at regular intervals, and avoid skipping meals.
  • Monitor Carbohydrate Intake: Pay attention to the amount and type of carbohydrates you're consuming, and adjust your insulin dosage or activity level accordingly.
  • Carry Fast-Acting Carbohydrates: Always carry a supply of fast-acting carbohydrates (such as glucose tablets or juice) with you in case you experience symptoms of hypoglycemia.
  • Check Blood Sugar Regularly: If you have diabetes or are at risk for hypoglycemia, monitor your blood sugar levels regularly as directed by your healthcare provider.
  • Limit Alcohol Consumption: If you drink alcohol, do so in moderation and always eat something with it. Avoid drinking on an empty stomach.
  • Communicate with Your Healthcare Provider: Be open and honest with your healthcare provider about your symptoms, concerns, and any changes in your health or lifestyle.

The Importance of Monitoring and Education

Related reading: The Top 10 Best Foods To Stabilize Blood Sugar All Day Long

Managing low blood sugar effectively relies heavily on regular monitoring and a solid understanding of your condition. Learning to recognize the signs of hypoglycemia, knowing how to treat it promptly, and working with your healthcare provider to identify and address the underlying causes are all vital steps toward maintaining your health and well-being. Don’t hesitate to seek professional guidance to develop a personalized management plan that works best for you.


The information provided in this article is intended for general knowledge and informational purposes only, and does not constitute medical advice. It is essential to consult with a qualified healthcare professional for any health concerns or before making any decisions related to your health or treatment.