Always Tired After 40? Common Reasons Worth Checking
Persistent fatigue in your 40s and 50s often has fixable causes, from sleep and iron to thyroid and stress. Here is what to check and what to ask your doctor.
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Energy
Fatigue, iron, B12, stress and the everyday habits that keep you going.
Feeling tired is one of the most common complaints in midlife, and it usually has more than one cause. Short sleep, heavy periods, low iron, low vitamin B12, an underactive thyroid, stress, low activity and skipped meals can all add up.
These guides help you sort out what is worth checking with a simple blood test, what you can change at home, and which supplement claims to treat with caution. Fatigue that is new, severe or comes with other symptoms should always be checked by a clinician.
Guides
Iron, Ferritin and Energy: What Women Over 40 Should Know
How iron affects energy in women over 40, why heavy perimenopause periods matter, how much iron you need, the best food sources and when to test.
Read the guideVitamin B12 After 40: Who Needs to Pay Attention and Why
Why vitamin B12 matters more with age, who is at risk of deficiency (including metformin and acid-reducer users), symptoms, food sources and testing.
Read the guideStress and Energy in Midlife: A Grounded Guide to Feeling Less Drained
How chronic stress drains energy in midlife, what "cortisol" claims get wrong, and practical, evidence-informed ways to manage stress and feel better.
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