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Sleep and your health

Why is sleep important?

Sleep is important for good health and wellbeing at every stage of life. While you sleep, your body works to keep you healthy by:

  • repairing cells
  • clearing out toxins
  • restoring energy.

Sleep also helps with:

  • brain development
  • cardiovascular (heart) health
  • metabolism
  • inflammation
  • learning and memory
  • mental health.

How much sleep do you need?

The amount of sleep you need depends on your age. For example, newborns need 14 to 17 hours each night and adults typically need 6 to 10 hours every 24 hours.

Good quality sleep is just as important as the amount of sleep you have each night.
You’ll know you’re getting quality sleep is if you feel refreshed rather than tired or foggy during the day.

It’s normal to feel tired sometimes – this might be due to workload, stress or general health, not just lack of sleep.

Regular routines and sleeping patterns help you to sleep well. Recent research suggests that health is associated with regular sleep rather than the amount of sleep.

How poor sleep can affect your health

Research suggests that people who don’t get enough sleep have poorer physical and mental health. Evidence shows that sleep problems can increase the risk of developing health conditions such as:

  • high blood pressure
  • obesity
  • heart disease
  • type 2 diabetes
  • stroke
  • poor mental health.

Sleep problems are linked to risk factors for long-term health conditions, including:

  • smoking
  • low physical activity
  • poor diet
  • heavy alcohol use
  • obesity.

Tips to improve your sleep

The most important thing you can do to improve your sleep is try not to worry about it. When you try too hard to sleep, it can make your sleep worse.

Here are some tips to improve your sleep.

Common sleep problems and what causes them

Almost half of adults in Australia say they have sleep-related problems. Common problems include:

  • finding it hard to fall asleep
  • waking many times in the night
  • snoring
  • waking up feeling unrefreshed.

If you often feel sleepy, tired or irritable during the day you may also have a sleep problem.

Sometimes you might have trouble sleeping. This may be due to:

  • stress
  • anxiety or depression
  • illness, pain or discomfort
  • changes in your routine
  • shift work
  • snoring.

It’s normal to have poor sleep every now and then. Don’t expect perfect sleep every night. This pressure can make sleep problems worse.

Some sleep problems improve over time, but serious sleep problems (sleep disorders) need treatment.

When to see a doctor about your sleep

See your doctor if you’ve had sleep problems for more than a couple of months and it’s affecting your work or relationships.

Note that sleeping tablets may help for a short time but they aren’t a recommended long-term solution to sleep problems. Sleeping tablets can cause side effects and become less effective over time. Talk to your doctor about the benefits and risks before deciding.

Learn more about sleep on the Sleep Health Foundation website.

More resources about sleep

How to sleep when your world is falling apart
Sweet dreams – sleep and your health
Your back-to-sleep-guide for 3am wake-ups
Healthy Sleep Practices for Shift Workers | Sleep Health Foundation

You can also try different apps and digital programs. For example:

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