Feeling Shaky and Anxious? Understanding the Signs of Low Blood Sugar (Hypoglycemia)

23 Aug 2025

Feeling Shaky and Anxious? Understanding the Signs of Low Blood Sugar (Hypoglycemia) Do you ever experience sudden feelings of shakiness, anxiety, or ...

Feeling Shaky and Anxious? Understanding the Signs of Low Blood Sugar (Hypoglycemia)

Do you ever experience sudden feelings of shakiness, anxiety, or even confusion? While these symptoms can be caused by a variety of factors, one possibility is low blood sugar, also known as hypoglycemia. Understanding the symptoms of hypoglycemia, its potential causes, and how to address it is crucial for your overall well-being. This article will delve into the intricacies of hypoglycemia to help you identify it and take appropriate action.

What is Hypoglycemia?

Hypoglycemia occurs when the glucose (sugar) level in your blood drops too low. Glucose is your body's primary source of energy. When blood sugar levels dip too low, your brain and other organs may not have enough fuel to function properly, leading to a range of symptoms. While often associated with diabetes, hypoglycemia can also occur in people without diabetes.

Common Symptoms of Low Blood Sugar

Related reading: What Is A Normal Blood Sugar Level The Ultimate 2024 Guide

Recognizing the symptoms of low blood sugar is the first step in managing it effectively. These symptoms can vary from person to person and may depend on how quickly the blood sugar level drops. Common signs include:

  • Shakiness or Trembling: This is one of the most common indicators.
  • Anxiety and Nervousness: A sense of unease or heightened anxiety can be a sign.
  • Sweating: Often, this will be cold and clammy.
  • Irritability or Mood Changes: You might find yourself easily agitated.
  • Confusion: Difficulty concentrating or thinking clearly.
  • Dizziness or Lightheadedness: Feeling unsteady or faint.
  • Rapid Heartbeat: An increased pulse rate can occur.
  • Hunger: An intense craving for food, especially sweets.
  • Blurred Vision: Temporary vision changes can be a sign.
  • Headache: A persistent headache.
  • Weakness or Fatigue: Feeling unusually tired and lacking energy.
  • Seizures or Loss of Consciousness: In severe cases.

It's important to note that not everyone experiences the same symptoms, and the severity can differ greatly. Some people might only experience mild shakiness, while others could become severely confused or even lose consciousness.

Causes of Hypoglycemia

The causes of low blood sugar can vary depending on whether you have diabetes or not. Understanding the underlying cause is essential for preventing future episodes.

Related reading: A1C Vs Fasting Blood Sugar Which Test Is More Important

Hypoglycemia in People with Diabetes:

  • Excess Insulin: Taking too much insulin, whether intentionally or unintentionally, is a major cause.
  • Skipped or Delayed Meals: Not eating enough food, or waiting too long between meals, can lead to a drop in blood sugar.
  • Increased Physical Activity: Exercise can lower blood sugar levels, especially if not balanced with sufficient food intake.
  • Certain Medications: Some oral diabetes medications can also cause hypoglycemia.
  • Alcohol Consumption: Alcohol can interfere with glucose regulation in the liver.

Hypoglycemia in People without Diabetes (Non-Diabetic Hypoglycemia):

  • Reactive Hypoglycemia: This occurs a few hours after eating a high-carbohydrate meal. The body overproduces insulin in response, leading to a rapid drop in blood sugar.
  • Fasting Hypoglycemia: This occurs after a period of fasting. It can be caused by various medical conditions, such as tumors that produce insulin or liver disease.
  • Hormonal Deficiencies: Certain hormone deficiencies, such as adrenal insufficiency, can lead to hypoglycemia.
  • Certain Medications: Some medications unrelated to diabetes can occasionally cause hypoglycemia.
  • Severe Illness: Liver disease, kidney disease, or severe infections can sometimes lead to low blood sugar.
  • Post-Bariatric Surgery: Individuals who have undergone weight-loss surgery may experience hypoglycemia.

How to Address Low Blood Sugar

If you suspect you have low blood sugar, it's important to act quickly. The "15-15 rule" is a commonly recommended approach:

  1. Check Your Blood Sugar (if possible): If you have a blood glucose meter, check your blood sugar level to confirm hypoglycemia (typically below 70 mg/dL).
  2. Consume 15 Grams of Fast-Acting Carbohydrates: Examples include:
    • 4 ounces (1/2 cup) of fruit juice
    • 4 ounces (1/2 cup) of regular (non-diet) soda
    • 1 tablespoon of honey or sugar
    • Glucose tablets (follow package instructions)
  3. Wait 15 Minutes: Allow time for your blood sugar to rise.
  4. Recheck Your Blood Sugar: If your blood sugar is still low (below 70 mg/dL), repeat steps 2 and 3.
  5. Eat a Meal or Snack: Once your blood sugar is back to normal, eat a meal or snack containing both carbohydrates and protein to stabilize your blood sugar levels and prevent another drop. Examples include whole-grain crackers with peanut butter, or a piece of fruit with cheese.

Related reading: The Long Term Dangers Of High Blood Sugar Hyperglycemia Explained

If you are unable to check your blood sugar, and you are experiencing symptoms of hypoglycemia, treat it anyway. It's better to treat hypoglycemia when you're unsure, than to risk severe symptoms.

When to Seek Medical Attention

While mild hypoglycemia can often be managed at home, it's crucial to seek medical attention in the following situations:

  • Severe Symptoms: If you experience seizures, loss of consciousness, or severe confusion.
  • Frequent Episodes: If you experience frequent episodes of hypoglycemia, even if they are mild. This could indicate an underlying medical condition that needs to be addressed.
  • Unexplained Hypoglycemia: If you experience hypoglycemia and do not have diabetes or other known risk factors.
  • Inability to Treat at Home: If you are unable to raise your blood sugar levels effectively at home.

Preventing Low Blood Sugar

Preventing hypoglycemia involves understanding the underlying causes and taking proactive steps to manage them. Here are some strategies:

For People with Diabetes:

  • Careful Medication Management: Work closely with your healthcare provider to adjust your medication dosage as needed.
  • Regular Meal Schedule: Eat meals and snacks at consistent times each day to avoid fluctuations in blood sugar.
  • Monitor Blood Sugar Regularly: Check your blood sugar levels frequently, especially before meals, before exercise, and at bedtime.
  • Adjust Insulin for Exercise: If you plan to exercise, adjust your insulin dose or consume extra carbohydrates to prevent hypoglycemia.
  • Limit Alcohol Consumption: If you drink alcohol, do so in moderation and always with food.
  • Carry Fast-Acting Carbohydrates: Always carry a source of fast-acting carbohydrates, such as glucose tablets or fruit juice, in case of hypoglycemia.
  • Wear a Medical Alert Bracelet or Necklace: This can help emergency responders identify your condition if you are unable to communicate.

For People without Diabetes:

  • Eat Balanced Meals: Focus on eating balanced meals that contain carbohydrates, protein, and healthy fats to prevent rapid blood sugar fluctuations.
  • Avoid Sugary Drinks and Processed Foods: These can cause rapid spikes and crashes in blood sugar.
  • Eat Regular Meals: Avoid skipping meals or going long periods without eating.
  • Manage Stress: Stress can affect blood sugar levels, so practice stress-reduction techniques.
  • Investigate Potential Causes: If you experience frequent or unexplained episodes of hypoglycemia, see your doctor to determine the underlying cause.

Diagnostic Testing for Hypoglycemia

Diagnosing the cause of low blood sugar, especially in those without diabetes, often involves various tests. Some common tests include:

  • Fasting Blood Sugar Test: Measures your blood sugar level after fasting for at least eight hours.
  • Oral Glucose Tolerance Test (OGTT): Measures your blood sugar levels at intervals after drinking a sugary solution.
  • Mixed-Meal Tolerance Test (MMTT): Similar to the OGTT but uses a standard meal to assess how your body responds to food.
  • Insulin and C-Peptide Levels: Help determine if your body is producing too much insulin.
  • Imaging Tests: Such as CT scans or MRIs, may be used to look for tumors that produce insulin.
Symptom Possible Cause Immediate Action
Shakiness/Trembling Low blood sugar, anxiety, medication side effect Check blood sugar; consume 15g fast-acting carbs
Anxiety/Nervousness Low blood sugar, panic attack, stress Check blood sugar; try deep breathing exercises
Confusion/Dizziness Low blood sugar, dehydration, head injury Check blood sugar; sit or lie down
Rapid Heartbeat Low blood sugar, anxiety, caffeine intake Check blood sugar; avoid caffeine

Living with Hypoglycemia

Living with hypoglycemia, whether you have diabetes or not, requires vigilance and a proactive approach. It's essential to work closely with your healthcare provider to develop a management plan that addresses your individual needs and circumstances. This plan should include:

  • Regular Blood Sugar Monitoring: If you have diabetes, frequent blood sugar monitoring is essential.
  • Dietary Adjustments: Eating balanced meals and snacks at regular intervals can help stabilize blood sugar levels.
  • Exercise Planning: Adjusting your medication or carbohydrate intake based on your activity level.
  • Emergency Preparedness: Carrying a source of fast-acting carbohydrates and wearing a medical alert bracelet or necklace.
  • Education and Support: Learning as much as you can about hypoglycemia and connecting with other individuals who experience it.

Conclusion

Hypoglycemia can be a concerning and even frightening experience. However, with proper understanding, proactive management, and close collaboration with your healthcare provider, it's possible to effectively manage low blood sugar and lead a healthy, fulfilling life. Recognizing the symptoms, understanding the potential causes, and knowing how to respond promptly are crucial steps in ensuring your well-being. If you suspect you have hypoglycemia, especially if you don't have diabetes, don't hesitate to consult with your doctor for diagnosis and treatment. Early detection and management can prevent severe complications and improve your quality of life.