Relationship of Sleep And Hunger

Research shows that when someone does not get enough good restful sleep, it can impact their appetite.

Why is sleep important?

You spend 1/3 of your life sleeping, and that is not wasted time. Good sleep habits help your body:

  • Process and save memories
  • Repair muscles
  • Boost your immune system
  • Support hunger and fullness cues to your body
  • Recharge

How do sleep and hunger impact each other?

There are 2 main hormones that affect hunger and satiety (feeling full):

Ghrelin - "The Accelerator"
Ghrelin is a hormone that is released by your stomach. It tells your brain it needs energy. When you do not get enough sleep, your levels of ghrelin will rise which causes you to feel hungry even if your body does not need more food.

Leptin - "The Brake"
Leptin is a hormone that is released by cells in your body called adipose cells. These signal to your brain that your body has had enough energy from food. When your body feels full or satisfied, you will have a high leptin level. When your leptin levels are high, your ghrelin levels are low, so you feel satisfied or full.

   

Sleep

Not Enough

Ghrelin

High ↑

Leptin

Low ↓

How You Feel

Hungry
The Right Amount Low ↓ High ↑ Full

If you are concerned about your sleep, reach out to your healthcare provider.

Learn More

Free Interpreter Services

  • In the hospital, ask your nurse.
  • From outside the hospital, call the toll-free Family Interpreting Line, 1-866-583-1527. Tell the interpreter the name or extension you need.
Seattle Children's Hospital

Seattle Children’s offers free interpreter services for patients, family members and legal representatives who are deaf or hard of hearing or speak a language other than English. Seattle Children’s will make this information available in alternate formats upon request. Call the Family Resource Center at 206-987-2201. This handout has been reviewed by clinical staff at Seattle Children’s. However, your needs are unique. Before you act or rely upon this information, please talk with your healthcare provider.

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11/01/2025
PE2171
Patient and Family Education | Child Wellness Clinic