Prediabetes, a condition marked by elevated blood sugar levels, often goes unnoticed, with fatigue as a common but overlooked symptom.

But does prediabetes make you tired? Yes. Higher blood sugar levels make it hard for your body to produce energy, leading to persistent fatigue, especially as the condition progresses. As prediabetes transitions to diabetes, fatigue worsens due to poor blood sugar control and sleep disturbances.

Catching it early and intervention is crucial. We will delve into factors contributing to fatigue in prediabetes, its symptoms, and vital lifestyle changes to manage fatigue and reduce the risk of type 2 diabetes. 

Key Facts

  • Elevated blood sugar levels in prediabetes impair energy production, leading to persistent tiredness.
  • Prediabetes often remains unnoticed due to subtle symptoms, with fatigue being a common yet underestimated indicator.
  • Progression to diabetes aggravates fatigue due to poor blood sugar control and sleep disturbances.
  • Contributing factors to fatigue in prediabetes include insulin resistance, blood sugar fluctuations, sleep disorders, stress, and poor diet.
  • Symptoms of fatigue include persistent tiredness, difficulty concentrating, irritability, muscle weakness, daytime drowsiness, and reduced motivation.
  • Lifestyle changes such as a balanced diet, regular exercise, stress management, quality sleep, and blood glucose monitoring are crucial for managing fatigue and reducing the risk of developing type 2 diabetes.

Understanding Prediabetes?

Prediabetes is a condition characterized by elevated blood sugar levels that are below the threshold for a diabetes diagnosis but signify an increased risk of developing type 2 diabetes. There is no exact cause of prediabetes. However, there are risk factors for prediabetes, including being overweight, leading a sedentary lifestyle, genetics, age over 45, specific ethnicities, and medical conditions like polycystic ovary syndrome (PCOS), gestational diabetes, high blood pressure, and sleep disorders.

Despite not showing symptoms in many cases, prediabetes symptoms are increased thirst, frequent urination, fatigue, blurred vision, and slow wound healing. However, these symptoms are often subtle and easily overlooked, underscoring the importance of routine screenings for early detection.

Early identification through tests like fasting blood sugar and hemoglobin A1C is crucial for timely intervention. Once diagnosed, lifestyle modifications become essential in managing prediabetes effectively. These lifestyle changes typically involve adopting a balanced healthy diet rich in whole foods, fruits, vegetables, lean proteins, and regular exercise. Weight loss is essential, and you must do everything to reduce stress.

While lifestyle changes form the cornerstone of prediabetes management, the doctor may sometimes prescribe certain medications like Metformin to complement healthy habits. However, medication should always be used alongside lifestyle modification, not just as a standalone treatment.

Prediabetes demands attention and action to mitigate the risk of progressing to type 2 diabetes and its associated complications.

Why Does Prediabetes Cause Fatigue?

Prediabetes often lacks noticeable symptoms, leading to underdiagnosis. However, certain aspects of prediabetes can contribute to fatigue. Elevated blood sugar levels hinder the body's energy production, causing increased tiredness throughout the day.

As blood sugar progresses to diabetes, the link to fatigue becomes clearer. The body's inability to regulate blood sugar and insulin and poor sleep quality aggravates fatigue. Additionally, factors like stress, weight gain, and vulnerability to infections associated with diabetes can further drain energy levels, leading to feelings of tiredness.

Factors Contributing to Fatigue in Prediabetic People

Several factors contribute to fatigue in individuals with prediabetes:

  • Insulin Resistance: Prediabetes often involves insulin resistance, where cells don't respond effectively to insulin. This disrupts glucose uptake, leading to elevated blood sugar levels and decreased energy production, causing fatigue.
  • Blood Sugar Fluctuations: Prediabetic individuals commonly experience fluctuations in blood sugar levels, leading to energy crashes and fatigue as the body struggles to maintain stable glucose levels.
  • Sleep Disorders: Conditions like obstructive sleep apnea are prevalent among those with prediabetes. Poor sleep quality and disrupted sleep patterns aggravate fatigue and contribute to daytime drowsiness.
  • Anxiety and Stress: The knowledge of being at risk for type 2 diabetes can be stressful. Chronic stress and anxiety can disrupt sleep, increase cortisol levels, and impair energy levels, leading to fatigue.
  • Poor Diet and Nutrition: Unhealthy dietary habits, including excessive consumption of refined carbohydrates and sugary foods, worsen insulin resistance and contribute to energy fluctuations, intensifying fatigue.

Symptoms of Fatigue in Prediabetic Individuals

Prediabetes symptoms of fatigue include:

  • Persistent tiredness or lethargy, even after sufficient rest.
  • Difficulty concentrating or completing tasks due to low energy levels.
  • Increased irritability or mood swings.
  • Muscle weakness or decreased stamina during physical activity.
  • Daytime drowsiness or frequent napping.
  • Reduced motivation or interest in usual activities.

Impact of Fatigue on Daily Life and Well-Being

Fatigue significantly impacts daily life and well-being in individuals with prediabetes. It can affect productivity, impair cognitive function, strain relationships, and deter engagement in physical activity, worsening metabolic health. Chronic fatigue may lead to frustration, hopelessness, and reduced quality of life, affecting mental health and happiness.

Addressing factors contributing to fatigue is crucial for improving the quality of life and preventing the progression of type 2 diabetes. Lifestyle modifications such as maintaining a healthy diet, managing stress, promoting quality sleep, and engaging in regular physical activity are essential for mitigating fatigue and enhancing overall well-being. Early detection and intervention for prediabetes are also vital for managing associated symptoms like fatigue and reducing the risk of developing type 2 diabetes and its complications.

Tips for Managing Fatigue With Prediabetes

To effectively manage fatigue linked to prediabetes, it's important to implement lifestyle adjustments targeting overall health and addressing specific factors contributing to tiredness:

  • Balanced Diet: Focus on a healthy diet rich in whole foods, fruits, vegetables, and lean proteins to regulate high blood sugar levels. Limit refined carbohydrates and sugary foods to prevent energy crashes and fluctuations.
  • Regular Exercise: Aim for 150 minutes weekly, like walking or swimming, to improve insulin sensitivity, boost energy levels, and help you not feel fatigued.
  • Stress Management: Practice stress-relief techniques such as deep breathing, meditation, or yoga to ease stress, which can make you feel tired.
  • Quality Sleep: Sleep 7-9 hours each night following a consistent sleep schedule. Address sleep disturbances like sleep apnea or insomnia promptly to manage fatigue effectively.
  • Blood Sugar Monitoring: Regularly monitor blood glucose levels to track progress and make necessary adjustments to lifestyle and treatment plans, preventing energy from fluctuating and feeling fatigued.
  • Medical Guidance: Consult healthcare professionals for personalized guidance and support. They can provide tailored recommendations, prescribe medications, and monitor progress.

By integrating these lifestyle modifications and seeking medical assistance, individuals with prediabetes can effectively manage fatigue, enhance their quality of life, and reduce the risk of developing type 2 diabetes.


Developing prediabetes and managing prediabetes-related fatigue requires lifestyle adjustments and medical support. Factors like insulin resistance, blood sugar fluctuations, sleep quality, stress, and nutrition contribute to tiredness.

To address fatigue effectively, focus on a healthy diet, maintaining a healthy weight, regular exercise, stress management, adequate sleep, blood glucose monitoring, and seeking medical assistance when needed.

Take proactive steps in managing diabetes and fatigue by integrating these changes into daily routines. Regular health check-ups are crucial for tracking progress and preventing progression to type 2 diabetes.

Prioritize health, seek support, and take control of well-being to improve quality of life and ensure a brighter, more energetic future.

Frequently Asked Questions

What foods should you avoid if you're prediabetic?

To manage prediabetes, avoid sugary beverages, refined carbs like white bread, and processed foods with added sugars. Limit fried and high-fat foods as well as sweetened condiments. Instead, focus on a balanced diet rich in fruits, vegetables, whole grains, lean proteins, and healthy fats to stabilize blood sugar levels and improve overall health. These dietary changes can help reduce the risk of developing type 2 diabetes and enhance well-being.

What causes prediabetes?

Prediabetes results from a mix of genetic predisposition, lifestyle choices, and health factors. Family history, excess weight, and a sedentary lifestyle increase risk. Poor dietary habits, like excessive sugar and refined carbs, also contribute. Additionally, age, ethnicity, and conditions like PCOS and sleep disorders play a role. Prediabetes develops when the body becomes resistant to insulin or produces insufficient amounts, leading to elevated blood sugar levels without meeting diabetes criteria.

How long does it take to reverse prediabetes?

The time it takes to reverse prediabetes varies widely based on individual factors like lifestyle changes, genetics, and overall health. Significant improvements can be seen within months with consistent adherence to a healthy diet, increased physical activity, and weight loss. However, there's no fixed timeline and ongoing monitoring and support from healthcare professionals are essential for successful reversal and reducing the risk of developing type 2 diabetes.


At Diabetic Me, we are committed to delivering information that is precise, accurate, and pertinent. Our articles are supported by verified data from research papers, prestigious organizations, academic institutions, and medical associations to guarantee the integrity and relevance of the information we provide. You can learn more about our process and team on the about us page.

  1. Mayo Clinic Prediabetes
  2. Science Direct Fatigue among diabetic patients: A descriptive study☆

About the Author

Ely Fornoville

Hi, I'm Ely Fornoville, and I am the founder of Diabetic Me. Being a type 1 diabetic since 1996, I developed a passion to help people learn more about diabetes. I write about diabetes and share stories from other diabetics around the world. I currently use a Medtronic Guardian 4 CGM and a MiniMed 780G insulin pump with Humalog insulin.

View All Articles