Feeling tired after a short night, a busy week or an illness is familiar to most of us. But fatigue that lingers, keeps coming back or affects everyday life deserves attention. There is no single explanation, and it is not always about hormones.
Start with what has changed
When did the fatigue begin? Has your sleep changed? Does it feel physical, mental or both? Did it follow an illness, a new routine, pregnancy or childbirth? Have you noticed other symptoms?
Sleep, stress, mental health, medication, nutrition and medical conditions can all contribute. Your story helps a clinician decide what to investigate instead of ordering a broad panel without a clear question. [1][2]
Possible causes worth discussing
Heavy periods and low iron. Heavy or prolonged menstrual bleeding can lead to iron deficiency and sometimes anaemia. Tiredness alongside breathlessness on exertion, palpitations or dizziness is worth mentioning. Finding out why the bleeding is happening matters as much as addressing iron levels. [3][4]
Thyroid and other medical conditions. An underactive thyroid may cause fatigue, sensitivity to cold and weight gain. Infection or a metabolic condition may also be considered depending on your symptoms and medical assessment. Symptoms alone cannot establish the diagnosis. [1][5]
Sleep and life stages. Pregnancy, postpartum life and perimenopause can affect sleep and daily demands. Night sweats and disrupted sleep may add to fatigue during perimenopause, but that transition should not automatically be assumed to explain every symptom. [2][6]
Do you need a blood test?
There is no universal “fatigue panel”. After discussing your history and examining you, a clinician may recommend a full blood count to check for anaemia, iron studies when appropriate, thyroid tests or other targeted tests. Results need to be read alongside symptoms and medical history; one number cannot tell the whole story. [1][3]
Before an appointment, jot down how long you have felt tired, how it affects you, your sleep, menstrual bleeding, medication and supplements, and any other symptoms. That context can be as valuable as a test result.
When to seek care
Book an appointment if fatigue persists, gets worse or interferes with normal activities, especially if it comes with fever, unexplained weight change, marked thirst or very heavy periods. Seek urgent medical help for fainting, chest pain or significant difficulty breathing. [2]
Fatigue is a signal to take seriously, not a diagnosis to guess. At OVEA, we believe prevention starts with your experience and gives health data meaning through professional guidance.
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Reviewed by the OVEA medical committee