Why am I always tired?

Constant tiredness is most often down to lifestyle — not enough good-quality sleep, stress, doing too much, or an unbalanced diet. Low mood and anxiety are also common causes. Sometimes there is a medical reason, such as anaemia or a thyroid problem, which a GP can test for.

When should I see a GP about tiredness?

See a GP if tiredness is constant, unexplained, not helped by rest, or is affecting your life — particularly if it comes with other symptoms such as breathlessness, weight loss, thirst or low mood.

What helps with tiredness?

Improving sleep habits, being more active, eating regular balanced meals, staying hydrated, cutting back on alcohol and caffeine late in the day, and managing stress all help. Improvements often take a few weeks.

Can stress make you physically tired?

Yes. Ongoing stress and poor sleep are among the most common reasons people feel drained. Addressing the underlying stress — and protecting your sleep — usually makes a real difference.

Tiredness and fatigue | HealthAnswers

Quick answer

What could tiredness and fatigue mean?

Feeling tired is very common and is often caused by everyday factors such as poor sleep, stress, doing too much, or an unbalanced diet. These usually improve with lifestyle changes. Tiredness that is constant, unexplained or not helped by rest can sometimes point to a medical cause and should be checked by a GP.

Feeling tired is very common

Most people feel tired from time to time, and it is usually down to everyday life rather than a medical problem. The good news is that the most common causes — poor sleep, stress and doing too much — can often be improved with some changes to daily habits.

Common reasons for tiredness

Lifestyle — not enough sleep, broken sleep, stress, overwork or too little physical activity.
Diet — an unbalanced diet, skipping meals, or drinking too much alcohol or caffeine.
Mood — low mood, anxiety and depression very commonly cause tiredness.
Medical causes — conditions such as anaemia (low iron), an underactive thyroid, or diabetes can cause persistent tiredness and are often found with a simple blood test.

Things that can help

Simple steps often make a real difference over a few weeks: keep regular sleep and wake times, be more active during the day, eat balanced meals, stay hydrated, limit alcohol and late caffeine, and make time to manage stress. If you suspect your mood is part of it, that is worth taking seriously and discussing with a GP.

When to see a GP

If you feel constantly tired for no obvious reason, if it does not improve with rest and better sleep, or if it comes with other symptoms — such as breathlessness, unexplained weight loss, excessive thirst, low mood or looking pale — see a GP. A blood test can rule out or identify treatable causes.

Common questions

Why am I always tired?: Constant tiredness is most often down to lifestyle — not enough good-quality sleep, stress, doing too much, or an unbalanced diet. Low mood and anxiety are also common causes. Sometimes there is a medical reason, such as anaemia or a thyroid problem, which a GP can test for.
When should I see a GP about tiredness?: See a GP if tiredness is constant, unexplained, not helped by rest, or is affecting your life — particularly if it comes with other symptoms such as breathlessness, weight loss, thirst or low mood.
What helps with tiredness?: Improving sleep habits, being more active, eating regular balanced meals, staying hydrated, cutting back on alcohol and caffeine late in the day, and managing stress all help. Improvements often take a few weeks.
Can stress make you physically tired?: Yes. Ongoing stress and poor sleep are among the most common reasons people feel drained. Addressing the underlying stress — and protecting your sleep — usually makes a real difference.

Sources

NHS — Tiredness and fatigue