Medically reviewed by Valerie Cacho, MD
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- Fiber may support better sleep by promoting gut health, reducing inflammation, and helping regulate blood sugar and sleep-related hormones.
- Eating more fruits, vegetables, legumes, and whole grains can help you meet daily fiber needs.
- A consistent sleep schedule, a relaxing bedtime routine, and limiting caffeine and screen time before bed can also improve sleep quality.
Going to bed around the same time every night, having a calming pre-sleep routine, and correcting vitamin and mineral deficiencies are all evidence-based ways to improve sleep, but what about dietary choices, like fiber intake? While you’ve probably heard that increasing fiber can improve gut and heart health, you may not be aware that it may help you sleep better.
How Fiber Impacts Sleep
Fiber plays many important roles in health, such as regulating blood lipid levels, promoting regular bowel movements, and fueling the growth of beneficial bacteria in your gut.
While it’s usually not thought of as important for sleep, research shows that getting enough fiber may be key for healthy sleep cycles.
Studies show that people who eat more fiber have a lower risk of sleep disorders, like insomnia, while low fiber intake is linked with lighter, less restorative sleep and more nighttime awakenings.
Though researchers are still investigating how increasing dietary fiber may help with sleep, it’s thought that fiber improves sleep by impacting gut health, neurotransmitters, and blood sugar.
1. Regulating Inflammation
Fiber fuels beneficial bacteria in the large intestine that produce compounds known as short-chain fatty acids (SCFAs), which work to protect and maintain gut health.
In addition to maintaining the integrity of the intestinal barrier, SCFA’s reduce inflammation. Having elevated levels of inflammation is linked to a number of health issues, including poor sleep and sleep disorders like insomnia.
Therefore, fiber may support more restful sleep through its inflammation-regulating properties.
2. May Impact Neurotransmitters
Fiber may also influence the production of neurotransmitters involved in sleep regulation, like serotonin. Some research suggests that higher fiber intake may increase serotonin production.
Serotonin is a precursor for melatonin, a hormone that regulates your sleep-wake cycleSince.
Being that around 90% of your serotonin is produced in the intestines, it’s essential to keep your gut healthy by eating plenty of fiber.
3. Supports Stable Blood Sugar
Adding more fiber to your diet is an effective way to lower blood sugar levels and improve overall blood sugar management.
Having uncontrolled blood sugar can significantly impact your sleep quality, as fluctuations can increase nighttime awakenings and reduce your overall sleep quality.
Fiber slows digestion, which slows the absorption of sugar into the bloodstream and reduces rapid spikes and crashes in blood sugar. This can help stabilize blood sugar overnight, supporting more restful sleep.
How Much Fiber Should You Eat?
If you’re wondering how much fiber you should be aiming for per day, it depends on your age and gender. a Daily Value (DV) is Here are the current daily fiber recommendations set by the United States Institute of Medicine (IOM).
| Age | Female | Male |
| 1-3 years | 14 grams | 14 grams |
| 4-8 years | 16.8 grams | 19.6 grams |
| 9-13 years | 22.4 grams | 25.2 grams |
| 14-18 years | 25.2 grams | 30.8 grams |
| 19-50 years | 25 grams | 38 grams |
| 51 and older | 21 grams | 30 grams |
In addition to these specific recommendations, there is a Daily Value (DV) set for fiber. DVs are used to represent the amount of nutrients recommended to consume each day based on a 2,000-calorie diet. The DV for fiber is currently set at 28 grams per day.
Hitting your daily fiber intake goals can help support overall health and reduce the risk of many common health conditions, like colon cancer, heart disease, and type 2 diabetes.
To reach these intake recommendations, it’s best to include a variety of high-fiber foods, like legumes, fruits, vegetables, and whole grains.
Other Ways to Improve Sleep
In addition to increasing your fiber intake, there are several other evidence-based ways to improve sleep:
- Stick to a consistent sleep schedule: Going to bed and waking up around the same time each day may help support your body’s natural sleep-wake cycle.
- Avoid stimulants before bed: Stimulants, like caffeine, can interfere with your ability to fall asleep and stay asleep.
- Create a relaxing nighttime routine: A soothing nighttime routine, like engaging in reading or stretching, or taking a warm bath, can help you relax and get to bed easier.
- Keep your bedroom cool, dark, and quiet: An ideal sleep environment is dark and cool. Try using a sleep mask if you have ambient light in your room.
- Limit screen time before bed: Scrolling on your phone or using your computer before bed can make it harder for you to fall asleep.
If you’re experiencing ongoing sleep problems, it’s important to discuss them with your healthcare provider. Sleep difficulties can sometimes be linked to underlying medical conditions, nutrient deficiencies, medications, or hormonal changes that require proper evaluation and treatment by a qualified healthcare professional.
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