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Gut Health Focus

Causes of Persistent Fatigue and How to Recover Your Energy

October 7, 2024
Updated September 5, 2026
3 min read
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Causes of Persistent Fatigue and How to Recover Your Energy
Learn what may be causing your constant fatigue and low energy. Explore the main causes of tiredness and how to improve your disposition effectively.
Living Without Energy? Learn What Might Be Causing This Constant Fatigue

Feeling tired all the time and lacking energy to perform daily activities can be more than just a simple tiredness. This constant fatigue can have several causes, and often, it is a sign that something in your body is not functioning as it should. Below, we will explore some of the main causes of constant fatigue and what can be done to improve your disposition.

Disregulated Thyroid Hormones

One of the most common causes of constant fatigue is thyroid dysfunction. The thyroid is a fundamental gland for energy metabolism, as it regulates the production of hormones such as T3 and T4, which are responsible for energy and disposition. When these hormones are disregulated, especially in the case of hypothyroidism, a person may feel excessive tiredness and lack of energy. It is important to have regular exams to check the health of the thyroid and understand if this dysfunction is linked to constant fatigue.

Nutritional Deficiencies

Deficiency of essential nutrients can also be behind constant fatigue. Vitamins from the B complex, vitamin D, iron, and magnesium are fundamental for energy production and the proper functioning of the organism. The lack of these nutrients can cause weakness, tiredness, and a drop in energy. Maintaining a balanced diet, rich in vegetables, fruits, and lean proteins, can help to supply these deficiencies and increase your disposition, combating constant fatigue.

Elevated Cortisol

Stress is another factor that can contribute to extreme tiredness and constant fatigue. The cortisol hormone, released in response to stress, can become elevated in chronic stress situations, harming the quality of sleep and energy production. The increase in cortisol affects hormonal balance and can lead to the feeling of constant exhaustion. Relaxation techniques, such as meditation, yoga, and physical activities, are effective in reducing stress and controlling cortisol levels, helping to prevent constant fatigue.

Altered Glucose and Insulin Levels

Disregulated levels of glucose and insulin can directly affect energy production and contribute to constant fatigue. Glucose is the main source of energy for the body, and when there are problems in carbohydrate metabolism, such as in the case of insulin resistance or diabetes, the entry of glucose into cells is hindered. This results in extreme tiredness and fatigue. It is essential to monitor glucose levels and follow an adequate diet to control these parameters, avoiding constant fatigue.

Non-Celiac Gluten Sensitivity and Other Food Intolerances

Conditions such as non-celiac gluten sensitivity, histamine intolerance, or nickel allergy can cause inflammation in the organism, affecting energy production and contributing to constant fatigue. These low-grade inflammatory processes can lead to fatigue and a feeling of exhaustion. Identifying these sensitivities and adjusting the diet can be an effective way to reduce inflammation and improve disposition, alleviating constant fatigue.

Conclusion

Living constantly without energy can be frustrating and affect your quality of life. If you have felt this way, it is time to investigate the cause of your constant fatigue. There are various conditions, such as hormonal dysfunctions, nutritional deficiencies, and food intolerances, that can contribute to this feeling of constant tiredness. Do not ignore these signs, as the appropriate treatment can make a big difference in your well-being.
Bruna Barbosa

About the Author

Bruna Barbosa — Nutritionist, CRN-DF 16963

Specializing in Functional Nutrition, Phytotherapy, and Digestive Health, Bruna helps people understand their symptoms and transform their health starting from the gut, based on scientific evidence, empathy, and clinical practice. She produces accessible, well-founded content to guide more conscious and sustainable choices.

Learn more about Bruna →