Why you might be tired all the time

Before you see a doctor, you may want to work out how you became tired in the first place. It can be helpful to think about:

• parts of your life, such as work and family, that might be particularly tiring
• any events that may have triggered your tiredness, such as bereavement, family issues or a relationship break-up
• how your lifestyle may be making you tired.

A doctor will look at psychological causes, physical causes and lifestyle causes for your tiredness.

Psychological causes of tiredness

Psychological causes of tiredness are much more common than physical causes. Most psychological causes lead to poor sleep or insomnia, both of which cause daytime tiredness. Psychological causes include:

• Stress
  The strains of daily life can worry most of us at some point. It's also worth remembering that even positive events, such as moving schools can cause stress. Read more about how to deal with stress.
• Emotional shock
  A bereavement, change in schools or a relationship break-up can make you feel tired and exhausted.
• Depression
  If you feel sad, low and lacking in energy, and you also wake up tired, you may have depression. Find out more about depression here.
• Anxiety
  If you have constant uncontrollable feelings of anxiety, you may have what doctors call generalised anxiety disorder (GAD). You can find out more about anxiety problems here. As well as feeling worried and irritable, people with GAD often feel tired. If you think your tiredness may be a result of low mood or anxiety, try this short audio guide to dealing with your sleep problems.

Physical causes of tiredness

Tiredness can be the result of:

• being overweight or obese – your body has to work harder to do everyday activities
• being underweight – poor muscle strength can make you tire more easily
• some illness’s can make you feel more tired.

Lifestyle causes of tiredness

In today's 24/7 "always on" world, we often try to cram too much into our daily lives. And to try to stay on top of things, we sometimes consume too much sugary and high-fat snacks on the go rather than sitting down for a proper meal. You can find advice about looking after yourself here. The main lifestyle causes of tiredness include:

• Exercise
  Too much or too little exercise can affect how tired you feel. Read more about the benefits of exercise.
• Caffeine
  Too much of this stimulant, found in tea, coffee, colas and energy drinks, can upset sleep and make you feel wound-up as well as tired. Try decaffeinated tea and coffee, or gradually cut out caffeine/energy drinks altogether.
• Daytime naps
  If you're tired, you may nap during the day, which can make it more difficult to get a good night's sleep.