Could Poor Sleep Be Making Your Blood Sugar Harder to Manage?
Sleep is an often-overlooked part of metabolic health. But getting more of it isn’t necessarily the whole answer. How well you sleep, when you sleep, and how consistent your routine is may all influence how your body handles blood sugar the next day.
Let’s explore what happens to your blood sugar after a poor night’s rest, and why better sleep may be one piece of better glucose control.
Sleep and Blood Sugar: The Ripple Effects of a Restless Night
Sleep and blood sugar are closely connected because sleep helps regulate insulin sensitivity, stress hormones, and other processes involved in glucose control. That’s why consistently poor sleep may contribute to insulin resistance and a higher risk of metabolic conditions like type 2 diabetes over time.
Here’s what may be driving that connection:
Insulin Sensitivity Can Drop
Insulin acts like a signal that tells your cells to take up glucose from your bloodstream for energy or storage. When your cells become less sensitive to that signal, your body needs more insulin to manage the same amount of glucose.
Sleep deprivation appears to interfere with this process. Research in healthy adults has found that insufficient sleep can temporarily reduce insulin sensitivity and impair glucose tolerance. A meta-analysis of controlled sleep-restriction studies reported similar effects.
Stress Hormones Can Rise
A restless night can also put your body under stress. Sleep loss may increase cortisol and activate your sympathetic nervous system, which helps prepare your body to respond to a perceived threat. That response makes more energy (glucose) available when you need it, potentially raising blood sugar.
When poor sleep repeatedly keeps these systems activated, it can interfere with insulin sensitivity and healthy glucose regulation.
Your Appetite Can Change, Too
Poor sleep has even been linked to greater cravings, particularly for calorie-dense foods.
In an analysis of 15 clinical trials, partial sleep restriction increased daily calorie intake by an average of about 204 calories compared with adequate sleep.
Over time, consistently eating more than your body needs can contribute to weight gain and increased body fat, both of which can indirectly make insulin resistance more likely.
Sleep Efficiency: Why the Goal Isn’t Just More Sleep
Sleep efficiency describes how much of the time you spend in bed you're actually asleep.
A study of nearly 1,000 healthy adults found that people with higher sleep efficiency tended to have lower blood sugar responses after breakfast. Even within the same person, sleeping more efficiently than usual was associated with a better glucose response the following morning.
The researchers also noticed that poor sleep efficiency, later bedtime routines, and deviations from usual sleep patterns were associated with higher post-meal glucose levels.
So rather than focusing on hours alone, aim for enough high-quality sleep. Keep a consistent sleep-wake schedule and limit things that disrupt sleep to help you get more efficient rest.
Better Sleep Is One Part of Better Blood Sugar Control
Sleep isn’t the only way to help maintain healthy blood sugar levels. Dihydroberberine, a more bioavailable form of berberine, may offer additional metabolic support. Berberine has been studied for its ability to promote healthy glucose metabolism and insulin sensitivity, while dihydroberberine can lead to greater berberine levels at a lower dose.
Think of better blood sugar control as a team effort: the more you can support your metabolism through sleep, nutrition, movement, and other targeted strategies, the less any one habit has to carry the full load.
Devan Ciccarelli is a NASM-Certified Personal Trainer, Nutrition Coach, and Women's Fitness Specialist who writes on health and lives in Florida with her two kids.
Comments