Low energy & fatigue
Low energy in men: what could be behind it?
Written by the TRT Optima clinical teamUpdated
When everyday life takes more effort than it used to, it’s worth understanding why.
Persistent fatigue can have several causes, including testosterone deficiency, thyroid problems, disrupted sleep, and other health conditions. An assessment helps identify what deserves a closer look.
TRT Optima helps you take that first step, with access to physician assessment and a dedicated team supporting you in English and Spanish.
Available across Colombia.
Understanding the connection
How can hormones affect your energy?
Hormones help regulate how your body functions. Two relevant areas to consider when investigating persistent fatigue are testosterone and thyroid function.
Testosterone: energy, muscle, and other clues
Reduced energy can occur with testosterone deficiency. Testosterone also helps maintain muscle and sexual desire, so fatigue alongside reduced libido, fewer spontaneous erections, or loss of muscle may give your physician more reason to investigate.
Fatigue alone cannot establish low testosterone. Diagnosis requires compatible symptoms and consistently low blood levels.
Thyroid hormones: how your body uses energy
Thyroid hormones regulate how your body uses energy. When the thyroid produces too little, body functions slow down and you may feel tired.
Other clues can include feeling unusually cold, constipation, dry skin, or weight gain. These symptoms help guide assessment, but blood testing is needed to establish whether thyroid function is abnormal.
The pattern of symptoms helps guide the investigation. Testing helps clarify whether a hormonal problem is present.
Looking at the whole picture
Your sleep, health, and routine matter too.
Several factors can overlap. Understanding what has changed helps your physician decide where to look.
Sleep and rest
Insufficient sleep, insomnia, and sleep apnea can contribute to fatigue. Mention disrupted nights and whether you wake feeling rested.
Blood and general health
Anemia, iron deficiency, diabetes, and other illnesses can affect energy. Your history helps guide relevant testing.
Medication and emotional wellbeing
Some medicines, alcohol, persistent stress, and depression can contribute. These deserve attention alongside hormonal questions.
From symptoms to next steps
An assessment starts with what has changed.
When did the fatigue begin? Is it constant or intermittent? How does it affect work, activity, or time with your family?
Your physician considers those answers alongside your sleep, medical history, medications, and available results.
Testing with a purpose
Depending on your history and examination, testing may include a blood count, thyroid function, glucose, or testosterone. Your physician determines which tests are relevant.
If testosterone deficiency is suspected, an initial low result generally needs confirmation with another morning, fasting measurement. Further testing may help identify the cause.
Help with the practical steps
Our WhatsApp team helps coordinate appointments, laboratory arrangements, and follow-up. Your physician explains the findings and recommends appropriate care, including further investigation or referral when needed.
Explore hormone health care for men →Questions about fatigue and hormones
Does being tired mean I have low testosterone?
No. Reduced energy can occur with testosterone deficiency, but fatigue has many possible explanations. Your physician considers other symptoms, your health history, and appropriate blood tests before making a diagnosis.
Can TRT improve energy?
For men with confirmed testosterone deficiency, TRT may be considered to address related symptoms. Improvement in fatigue is not guaranteed.
In a major trial of symptomatic men aged 65 and older with low testosterone, treatment did not significantly improve the study’s main fatigue measure compared with placebo. Your physician should explain realistic expectations for your situation. Testosterone Trials — published results
Which blood tests should I get?
The right tests depend on your symptoms and history. A physician may consider a blood count, thyroid testing, glucose, or testosterone, among other investigations. You do not need to choose a comprehensive hormone panel yourself before contacting us.
What if my testosterone result is normal?
Your fatigue still deserves attention. A testosterone result is one part of the assessment. Your physician may investigate sleep, thyroid function, anemia, medications, emotional wellbeing, or other possible contributors.
Can I start without recent bloodwork?
Yes. Start with your health assessment and share any results you already have. Our team can explain the next steps and how to arrange physician review or recommended testing.
When should I seek medical attention?
Arrange an assessment when fatigue persists, affects daily life, or remains unexplained. Seek prompt medical advice if it occurs with symptoms such as fever, unintentional weight loss, or recurrent night sweats. MedlinePlus — when to seek assessment
Understand what’s behind the change.
Tell us about your energy, your health history, and what you’ve noticed. We’ll help you understand how to take the next step toward assessment.
English and Spanish support across Colombia.