1242 sleep evidence claims,
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Tart cherry juice (240ml twice daily) increases total sleep time by approximately 84 minutes and improves sleep efficiency in older adults with insomnia. The effect is attributed to natural melatonin content and procyanidins.
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All topics →Ambien, Xanax, Lunesta… and the natural stacks people use instead
Side-by-side comparisons for "[drug] + natural alternative" searches.
Trending Evidence
View all →Melatonin reduces sleep onset latency by approximately 7 minutes in adults with primary sleep disorders
A comprehensive meta-analysis of 19 RCTs (1,683 participants) found melatonin reduces sleep latency by ~7 minutes and increases total sleep time by ~8 minutes. Effects are more pronounced in older adults and those with circadian rhythm disruptions.
Low-dose melatonin (0.5mg) effectively shifts circadian rhythm for jet lag, shift work, and delayed sleep phase syndrome
Melatonin is the most potent chronobiotic available. Administered 5 hours before dim-light melatonin onset (DLMO), even low doses (0.5mg) produce a 1-2 hour phase advance. This makes it effective for jet lag, shift work adaptation, and delayed sleep phase syndrome. Timing is more critical than dose.
Glycine reduces sleep latency in human RCTs
Glycine (3g before bed) significantly reduces sleep onset latency and improves subjective sleep quality in healthy adults. Evidence from 3 human RCTs shows consistent effects, with the mechanism involving NMDA receptor modulation and thermoregulation.
Moderate-intensity aerobic exercise (150 min/week) significantly improves sleep quality in adults with chronic insomnia
A 4-week RCT found 150 min/week of moderate aerobic exercise significantly improved PSQI scores and objective sleep measures in adults with chronic insomnia. Exercise is recommended as a first-line behavioral intervention for insomnia.
Glycine improves overall sleep quality and reduces daytime sleepiness
Beyond reducing sleep latency, glycine (3g before bed) improves PSG-measured sleep quality including increased REM sleep and reduced nocturnal awakenings. Daytime sleepiness and fatigue are also significantly reduced the following morning.
Ashwagandha root extract (300mg BID) significantly improves sleep quality and reduces sleep onset latency in adults with insomnia
A well-designed 8-week RCT (n=138) found ashwagandha root extract significantly improved PSQI scores, reduced sleep onset latency, and improved sleep efficiency. Benefits were most pronounced in adults with insomnia and anxiety.
Fresh Evidence
Recently added, highest-rated claims
Milk-derived bioactives and fortified or fermented milk products improve sleep efficiency in randomized controlled trials.
A systematic review and meta-analysis of 11 RCTs found that milk-derived bioactives and fortified or fermented milk products significantly improved sleep efficiency (SMD = 0.45; 95% CI, 0.21-0.70). Subgroup analyses showed greater improvements in sleep efficiency (SMD = 0.52) and wake after sleep onset (MD = -8.24 minutes) in individuals with sleep or health disturbances, and reduced sleep latency in healthy participants (MD = -2.17 minutes).
Moderate physical activity is associated with a modest reduction in insomnia risk, while occupational physical activity may increase insomnia risk
This meta-analysis of 27 observational studies found that moderate physical activity was associated with a 7% lower risk of insomnia (OR=0.93, 95% CI 0.87-1.00), while high physical activity showed no significant association (OR=0.96, 95% CI 0.85-1.09). Occupational physical activity was associated with a 21% higher risk of insomnia (OR=1.21, 95% CI 1.02-1.43). The findings suggest that the intensity and domain of physical activity matter for sleep health.
Nurses' sleep duration and quality have declined significantly over recent decades
A meta-regression of 280 studies involving 219,245 nurses found a significant decline of 28.7 minutes in sleep duration between 1985 and 2022 (95% CI: 26.2, 33.1, ES: 0.43) and a 1.6-point increase in global PSQI scores between 1990 and 2023, indicating poorer sleep quality (95% CI: 1.47, 1.77, ES: 0.49). These trends suggest an increased risk of fatigue, impaired clinical performance, staff burnout, and work-related accidents.
Variable-rate feedback infusion reduces cumulative opioid consumption at 48 hours postoperatively compared with fixed-rate basal infusion in patients undergoing mixed surgery
This protocol describes a prospective, multicentre, randomised, double-blind, controlled trial to compare cumulative opioid consumption at 48 hours postoperatively between variable-rate feedback infusion and fixed-rate basal infusion modes of intravenous patient-controlled analgesia (PCA). The study will enrol 1170 patients undergoing mixed surgery and will measure total cumulative opioid consumption as the primary outcome, with secondary outcomes including pain scores and quality of recovery. The hypothesis is that variable-rate feedback infusion reduces opioid consumption while providing non-inferior analgesia.
LTC-022 (Lactium and L-theanine) improves sleep maintenance and bedtime regularity in adults with sleep discomfort
In a double-blind, placebo-controlled RCT of 40 adults with sleep discomfort, 8 weeks of LTC-022 supplementation did not significantly improve PSQI or ISI scores compared to placebo. However, sleep diary analysis showed significant reductions in wake after sleep onset (WASO) counts and earlier bedtime in the LTC-022 group, along with within-group improvements in total sleep time, sleep onset latency, and sleep efficiency. Gut microbiome analysis revealed increased abundance of Blautia and Ruminococcus genera in the LTC-022 group.
Brief CBT-I improves insomnia symptoms in women receiving chemotherapy for breast cancer
In a randomized clinical trial of 219 women undergoing chemotherapy for breast cancer, 6 weeks of CBT-I significantly reduced insomnia symptoms (ISI score MD, -2.19 [95% CI, -3.33 to -1.05]; P=.002) compared to non-CBT-I groups. However, CBT-I did not significantly improve fatigue symptoms (PROMIS-Fatigue MD, -0.90 [95% CI, -3.08 to 1.28]; P=.52). Bright light therapy (BLT) did not significantly improve either insomnia or fatigue symptoms compared to non-BLT groups.
Evidence Explorer
1000 claimsLonger sleep duration and shorter wake bouts are associated with more favorable adipokine profiles in older adults
In older adults from the Baltimore Longitudinal Study of Aging, longer average wake bout length was cross-sectionally associated with lower adiponectin and leptin levels. Longitudinally, longer total sleep time predicted increases in adiponectin, while short sleep duration (<6h) predicted declines. Associations were stronger in females and those with lower central obesity.
Initiating novel hypnotics in BZRA users reduces BZRA use, but success declines with longer prior BZRA use
In a retrospective cohort study of 190 patients on BZRA hypnotics who initiated novel hypnotics, 46% achieved BZRA reduction at 1 year. Success rates were significantly higher in patients with less than 1 year of prior BZRA use (69%) compared to those with 1 year or more (36%).
Smartphone addiction and sedentary time are associated with poorer sleep quality and more frequent neck/shoulder symptoms in university students
In a cross-sectional study of 585 university students, higher smartphone addiction and longer sedentary time were associated with higher PSQI scores, a higher prevalence of poor sleep (43.8%), and a higher prevalence of neck/shoulder symptoms (46.2%). Meeting physical activity recommendations was associated with lower PSQI scores and lower prevalence of poor sleep but not with neck/shoulder symptoms.
Circadian rhythm sleep disorder is associated with an increased risk of open-angle glaucoma, and melatonin use may reduce this risk.
In a retrospective cohort study of 24,730 matched pairs, patients with circadian rhythm sleep disorder had a significantly higher risk of open-angle glaucoma at 5 years (0.27% vs. 0.08%; aHR 2.88, 95% CI 1.78-4.66). Among melatonin users, the risk was not significantly different from controls, suggesting a potential protective effect of melatonin.
Eveningness tendency and higher night eating scores are associated with poorer sleep quality in adults, while dietary melatonin intake is not associated with sleep quality after adjustment for covariates.
In a cross-sectional study of 325 adults in Istanbul, higher Night Eating Questionnaire (NEQ) scores were positively associated with Pittsburgh Sleep Quality Index (PSQI) scores (B=0.198, β=0.491, 95% CI: 0.156-0.239, p<0.001), indicating worse sleep quality. Lower Morningness-Eveningness Questionnaire (MEQ) scores (eveningness) were negatively associated with PSQI scores (B=-0.067, β=-0.189, 95% CI: -0.102 to -0.032, p<0.001), also indicating worse sleep quality. Estimated dietary melatonin intake (mean 10.485 ± 13.306 μg/day) was not significantly associated with sleep quality after adjustment.
Organized sports participation is associated with higher physical activity levels and lower BMI in Saudi male adolescents, but also with shorter sleep duration.
Among 124 Saudi male adolescents (70 athletes, 54 non-athletes), athletes had significantly higher physical activity levels (98.6% vs 55.6% meeting guidelines) and lower BMI (23.64 vs 29.69 kg/m2). However, athletes reported shorter average sleep duration (9.06 vs 11.28 hours per day), though both groups exceeded 8 hours. No significant difference was found in daily screen time.
A remote physical activity intervention improves physical activity and quality of life but has limited effects on sleep quality and musculoskeletal symptoms in Brazilian education professionals.
A 12-week remote physical activity intervention using motivational messages delivered via digital platforms significantly increased light, moderate, vigorous, and total physical activity in education professionals. Quality of life improved in physical, psychological, and environmental domains, but overall sleep quality did not change significantly, while sleep duration worsened slightly. Upper back pain decreased significantly, but other musculoskeletal symptoms showed no significant improvement.
Good sleep quality increases live birth probability by 12% in IVF-ET patients
The review found a significant positive correlation between sleep quality and pregnancy outcomes in IVF-ET patients. Women with good sleep quality had a 12% higher probability of live birth compared to those with poor sleep quality. Poor sleep quality was identified as an independent risk factor for pregnancy failure in females and reduced semen quality in males.
Serum magnesium level is associated with cognitive function in Palestinian elderly
In a cross-sectional study of 200 older adults (mean age 64.6 years), serum magnesium levels showed a substantial correlation with cognitive function as measured by the MoCA score. The mean MoCA score was 24.5 ± 3.66, and magnesium levels were also associated with smoking status and instrumental activities of daily living (IADL), but not with activities of daily living (ADL) or other factors like sleep quality.
Physical exercise reduces bedtime procrastination in college students through a chain mediation of self-control and time management tendencies
A survey of 1,069 college students found that physical exercise negatively predicted bedtime procrastination (β = -0.158, p < 0.01). Self-control and time management tendencies mediated this relationship in a chain pathway: physical exercise → self-control → time management tendency → bedtime procrastination.
Higher magnesium intake is associated with lower odds of insomnia symptoms in adults without diabetes
In Puerto Rican adults without diabetes, higher total magnesium intake (per 100 mg/d) was associated with 58% lower odds of insomnia symptoms (OR 0.42, 95% CI 0.23-0.79), and magnesium supplement users had 63% lower odds compared to nonusers (OR 0.37, 95% CI 0.17-0.81). This association was not observed in participants with diabetes (P-interaction < 0.05).
Semaglutide 2.4 mg reduces the incidence of obesity-related complications and is cost-effective in Japan under retreatment scenarios.
In a lifetime economic model from a Japanese public payer perspective, semaglutide 2.4 mg plus diet and exercise reduced the incidence of obesity-related complications such as type 2 diabetes, cardiovascular events, obstructive sleep apnea, and gout compared to diet and exercise alone. The incremental cost-effectiveness ratio was ¥5,300,580/QALY for patients without type 2 diabetes and ¥7,077,984/QALY for those with type 2 diabetes, with retreatment improving QALY gains.
Newest Studies
All →Comparison of cumulative opioid consumption between variable-rate feedback infusion and fixed-rate basal infusion modes of intravenous patient-controlled analgesia following mixed surgery: protocol for a prospective randomised controlled trial.
BMJ open, 2026 · observational
Five-year patient-reported outcomes of individualized nutrition therapy supporting nutritional ketosis in adults with type 2 diabetes.
Frontiers in nutrition, 2026 · observational
Associations of actigraphic sleep parameters with adipokines in older adults in the Baltimore longitudinal study of aging.
Sleep advances : a journal of the Sleep Research Society, 2026 · observational
The Impact of Milk-Derived Bioactives and Fortified or Fermented Milk Products on Sleep Quality: A Systematic Review and Meta-Analysis.
Nutrition reviews, 2026 · observational
Recently Updated
All →Insomnia induces intestinal microbiota disorder, and artificial interventions targeting gut microbiota can improve sleep.
This narrative review summarizes evidence that insomnia can disrupt intestinal microbiota by activating immune responses, the HPA axis, and neuroendocrine systems, while gut microbiota can exacerbate insomnia via neurotransmitter and inflammatory factor release. Artificial interventions such as probiotics, traditional Chinese medicine, fecal microbiota transplantation, diet, and exercise may improve sleep by affecting neurotransmitter and microbial metabolite release.
Melissa officinalis Phytosome (MOP) improves sleep quality in adults with mild insomnia
In a double-blind, placebo-controlled crossover study, MOP significantly reduced Insomnia Severity Index (ISI) scores by an average of 2.9 points compared to placebo (6.8 ± 4.1 vs 9.7 ± 3.7, p=0.003). Slow-wave sleep (SWS) duration increased by 15%, REM sleep decreased by 10%, and 87% of treated participants reported improved sleep quality versus 30% in the placebo group (χ²=21.01, p=0.0003).
Gut microbiota taxa are causally associated with insomnia risk in European ancestry individuals
A Mendelian randomization study identified that Enterorhabdus, Family XIII AD3011 group, Paraprevotella, and Lachnospiraceae UCG004 increase insomnia risk, while Coprococcus1, Coprobacter, Desulfovibrio, Flavonifractor, Olsenella, Odoribacter, and Oscillibacter decrease risk. For specific insomnia phenotypes, Eisenbergiella increased risk of trouble falling asleep, while Haemophilus and Eubacterium brachy group reduced it; Family XIII UCG001, Lachnospiraceae FCS020 group, and Olsenella increased risk of waking too early, while Eubacterium brachy group and Victivallis reduced it.
Six hub herb pairs (Radix Astragali-Radix et Rhizoma Ginseng, Rhizoma Chuanxiong-Radix Glycyrrhizae, Seman Platycladi-Semen Ziziphi Spinosae, Pericarpium Citri Reticulatae-Radix Glycyrrhizae, Radix Polygalae-Semen Ziziphi Spinosae, Radix Astragali-Semen Ziziphi Spinosae) may treat insomnia via the cAMP signaling pathway synergistically with HIF-1, prolactin, chemical carcinogenesis receptor activation, and PI3K-Akt signaling pathways.
This study analyzed 104 TCM prescriptions for insomnia using data mining, network pharmacology, and molecular docking. Six hub herb pairs were identified, and network pharmacology suggested they may act through the cAMP signaling pathway in synergy with four other pathways, with molecular docking showing good binding affinity between active ingredients and hub targets.
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