Fatigue

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Tiredness that hangs around even after rest. It's one of the most common things people notice, and it can overlap with lots of things, from sleep and stress to iron, thyroid and B12.

You might notice

waking up tired even after a full night's sleep
running on empty by mid-afternoon
everyday things feeling like a big effort
needing more rest than you used to
leaning on caffeine to get through the day

Who can help

Start with a doctor who will test and look at the whole picture, like an integrative MD or a naturopathic doctor.

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Where it can overlap

Underactive thyroid
Fatigue can overlap with underactive thyroid. Established
Iron deficiency
Fatigue is a recognised feature of iron deficiency. Established
ME/CFS
Fatigue is a defining feature of ME/CFS. Established
Sleep changes
Fatigue is commonly associated with sleep changes. Established
Thyroid symptoms
Fatigue can overlap with thyroid symptoms. Established
B12 deficiency
Fatigue is a recognised feature of B12 deficiency. Established

17 more threads +

Autoimmune conditions
Fatigue can overlap with autoimmune conditions. Established
Endometriosis
Fatigue can overlap with endometriosis. Established
Heavy periods
Fatigue can overlap with heavy periods. Established
Overactive thyroid
Fatigue can overlap with overactive thyroid. Established
PMDD
Fatigue can overlap with PMDD. Established
PMS
Fatigue can overlap with PMS. Established
Brain fog
Fatigue can overlap with brain fog. Associated
Immune symptoms
Fatigue can overlap with immune symptoms. Associated
Under-fuelling (LEA)
Fatigue can overlap with under-fuelling (LEA). Associated
Stress
Fatigue can show up alongside stress. Associated
Low ferritin
Fatigue can overlap with low ferritin. Emerging
Lyme disease
Fatigue can be part of Lyme disease. Established
Food intolerances
Fatigue can overlap with food intolerances. Associated
Inflammation
Fatigue can overlap with inflammation. Associated
SIBO
Fatigue can overlap with SIBO. Associated
Mould + damp
Fatigue is being studied in relation to mould + damp. Emerging
Blood sugar
Fatigue can overlap with blood sugar. Woo exploration

Established: well documented · Associated: linked, not a cause · Emerging: early research · Woo exploration: worth exploring, not yet sourced. A link isn't a cause.

Keep exploring

Low ferritinFerritin is the protein that stores iron, so a low result can mean your iron stores are running low, sometimes…Also in Energy + metabolism Under-fuelling (LEA)When the fuel you take in doesn't cover what your body is using, whether from training hard, eating too little or…Also in Energy + metabolism Blood sugarHow your body handles glucose and responds to insulin. It's a big part of metabolic health and closely tied to PCOS…Also in Energy + metabolism

26 sources · how we checked

Everything on this page was researched from clinical guidance, government health sources and published reviews first, then single studies. Where a connection is only worth exploring, it says so.

A note from Woo: Body Map is here to help you explore and ask better questions. It isn't a diagnostic tool or a substitute for medical care. Relationships shown here represent areas that may be associated or worth exploring, not a diagnosis or statement of cause.

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