Plant-Based Diet and High-Fiber Foods Improve Sleep Quality, Study Finds
- Eating a diet rich in dietary fiber from plant-based sources like fruits, vegetables, and whole grains significantly improves sleep quality and helps individuals fall asleep faster, according to...
- Researchers analyzing data from the Human Phenotype Project examined the daily eating habits of participants to determine how specific foods influence nighttime rest.
- Additional reporting noted that participants consuming higher amounts of fiber experienced a lower nighttime heart rate, signaling better physiological recovery.
Eating a diet rich in dietary fiber from plant-based sources like fruits, vegetables, and whole grains significantly improves sleep quality and helps individuals fall asleep faster, according to scientific research published in Nature Health.
Dietary Plant Sources Improve Sleep Quality
Researchers analyzing data from the Human Phenotype Project examined the daily eating habits of participants to determine how specific foods influence nighttime rest. The study tracked thousands of participants over several years, monitoring their medical histories, lifestyles, and sleep patterns using dedicated tracking devices. The findings show that a varied diet rich in plant-based foods, whole grains, legumes, nuts, and olive oil correlates with measurable enhancements in sleep duration and depth.
Additional reporting noted that participants consuming higher amounts of fiber experienced a lower nighttime heart rate, signaling better physiological recovery. Specific phytonutrient- and fiber-rich foods identified in the research include green tea, turmeric, spinach, sweet potatoes, kiwis, lentils, brown rice, and almonds. According to the research, increased daily fiber intake relates specifically to deeper sleep and higher amounts of rapid eye movement, or REM, sleep.
Fiber-Rich Plant Foods Help Regulate Rest
Nutrition scientists emphasize that structured meal timing and fiber composition play a direct role in regulating rest. Marie-Pierre St-Onge, a professor of nutritional medicine at Columbia University Irving Medical Center and director of the Center of Excellence for Sleep & Circadian Research, stated that individuals wanting better sleep should prioritize fiber-rich plant foods. The study is bien menée
and leaves open that people seeking better sleep ought to privilégier les aliments d’origine végétale riches en fibres
according to Marie-Pierre St-Onge, who also wrote Si vous mangez mieux, vous dormirez mieux.
St-Onge also noted that eating late during the evening when melatonin levels rise can lead to unfavorable cardiometabolic effects. The researcher advises leaving roughly three hours between finishing dinner and going to bed to prevent digestion from interfering with sleep.
Observed Sleep Improvements and Intervention Testing
Observational studies led by St-Onge and her colleagues indicate that individuals following patterns similar to the Mediterranean diet tend to sleep longer and experience lower rates of insomnia. While controlled feeding trials remain less common, small-scale clinical tests involving specific fruits like kiwis showed reductions in sleep onset time and overall improvements in sleep efficiency.
Controlled trials tracking specific fruits and fibers show that the overall poor sleep quality score decreased by 42.4%, sleep onset time dropped by 35.4%, total sleep duration increased by 13.4%, and nighttime wakefulness fell by 28.9%.
Human Phenotype Project Analyzes Food Impact on Sleep
In this latest research, investigators examined how different foods consumed throughout the day impact nocturnal sleep by analyzing data from the Human Phenotype Project, which has recruited 28,000 individuals to date. Since 2011, research groups including teams in Taipei and Dr. Marie-Pierre St-Onge have studied how kiwis, bananas, and dietary fibers affect sleep quality.
Despite these findings, researchers stress that dietary adjustments complement rather than replace medical treatment for chronic sleep disorders. While evening fruit snacks and high-fiber meals offer a practical daily tool, persistent insomnia still requires proper medical evaluation.