Sleep and Blood Sugar

Insulin moves sugar from your blood into your cells. Think of it as a key that opens a door.

Short or poor sleep is linked to higher blood sugar. In one study, healthy adults slept about four hours a night for several nights. Afterward, their cells responded less to insulin.

Two hormones, leptin and ghrelin, help tell your brain when you need food. Think of them as messengers.

One helps signal hunger, and the other helps signal fullness. Poor sleep has been linked to changes in both. That may mean stronger cravings the next day.

The CDC suggests seven or more hours of sleep for most adults. A regular schedule helps your body settle.

Going to bed and waking at similar times supports better sleep quality. Sleeping in on weekends does not fully make up for uneven nights.

Key takeaways

• Short or poor sleep is linked to higher blood sugar and lower insulin sensitivity.
• Sleep can also shift hunger hormones, which may make cravings stronger.
• A regular sleep schedule supports better sleep quality. Tell your doctor if you snore loudly or wake up unrested.

Try it

Choose a bedtime and wake time you can keep most days, and note how rested you feel each morning.