Common questions
What blood tests help find the cause of fatigue?
A clinician often starts with a full blood count, ferritin (iron stores), thyroid function (TSH), vitamin D, and blood glucose. These catch the most common, treatable causes of persistent tiredness in midlife women.
Is 'adrenal fatigue' a real cause?
'Adrenal fatigue' is not a recognised medical diagnosis. The tiredness people attribute to it is real, but it more often reflects poor sleep, low iron, thyroid problems, perimenopause, or chronic stress — all of which can be assessed and treated.
Why does a normal blood count not rule out iron deficiency?
Because the body defends hemoglobin last. Ferritin — stored iron — falls first and can be at rock bottom for years while the full blood count reads normal. If you are tired, ask for ferritin specifically; a standard count will not show it.
Could my fatigue be sleep apnea?
It commonly is, and it is under-diagnosed in women because it presents as insomnia and exhaustion rather than loud snoring. Risk rises sharply after menopause, at exactly the point everything is being attributed to hormones. Morning headache and unrefreshing sleep are the clues worth acting on.
How long before treating the cause makes a difference?
Iron: energy often improves in two to four weeks, but stores take three to six months to refill, so stopping early brings it straight back. Thyroid: six to eight weeks after reaching the right dose. Sleep apnea: often within days of effective treatment, which is what makes it such a costly diagnosis to miss.