A randomized Stanford-affiliated study of 299 adults who had not been regular meditation practitioners found that practicing focused-attention meditation for at least 10 minutes a day for eight weeks was associated with reductions in anxiety and mind wandering.
The fully remote trial followed participants for 16 weeks, including an eight-week meditation period and an additional eight weeks of follow-up. Researchers measured psychological symptoms, cognitive performance and physiological data collected through wearable devices.
The study found that anxiety and mind wandering decreased more among participants assigned to meditation than among those initially assigned to a waitlist. The improvements were also maintained during the follow-up period. People who started the study with higher levels of anxiety or mind wandering tended to show the largest changes.
The findings come from researchers including Cameron C. Glick, Saad Pirzada, Shaun Quah, Sasha Feldman, Iyọbosa Enabulele, Soren Madsen, Neel Billimoria, Summer Feldman, Richa Bhatia, David Spiegel and Manish Saggar. The research was monitored by the Stanford Institutional Review Board and is registered as NCT06014281.
There is an important qualification. The findings are currently available as a medRxiv preprint, rather than a peer-reviewed journal publication. The results therefore provide promising evidence but should not be treated as definitive proof that 10 minutes of meditation will reduce anxiety for everyone.
The Stanford Trial Included 299 Meditation-Naive Adults
The researchers designed the study around a practical question: can a relatively small daily commitment to meditation produce measurable changes in mental health among people who are not already regular meditators?
A total of 681 people were assessed for eligibility, with 299 ultimately randomized. The immediate-intervention group contained 151 participants, while 148 were assigned to a waitlist control group. The primary analysis sample had an average age of 33.8 years, and approximately 66.7% were women.
Participants were required to be adults who were not already regular meditation practitioners. Stanford’s trial listing states that eligible participants needed to be at least 18 years old and living in the United States, while people already engaged in regular, long-term meditation were excluded.
The study therefore does not answer whether experienced meditators can gain the same benefits from an additional 10 minutes of practice. Instead, it focuses on people starting from relatively little or no regular meditation experience.
That distinction matters because beginners may respond differently to meditation than people who have practiced for years.
The researchers were also interested in whether the amount of daily practice mattered, making the trial relevant to the practical question behind many short meditation routines: does a modest daily commitment have measurable effects?
Participants Practiced For At Least 10 Minutes A Day
The intervention required participants to practice focused-attention meditation for a minimum of 10 minutes every day for eight weeks.
Participants could complete the daily requirement as one 10-minute session or accumulate the time through shorter sessions, provided the practice reached the required daily amount. Continued meditation was optional during the follow-up period.
The meditation method was derived from an approach historically associated with the Science of Spirituality, but the researchers presented it as a secular focused-attention exercise for the purposes of the trial.
The instructions emphasized relaxing the body, maintaining alert attention and observing internal experiences without forcefully controlling them. Participants were also instructed to use a calming word silently during the practice.
This makes the intervention different from a generic instruction to “sit quietly for 10 minutes.”
The participants received standardized training before practicing independently. The researchers then examined whether that relatively simple daily practice could produce measurable differences in psychological functioning.
For people interested in incorporating short sessions into everyday routines, the site’s meditation techniques section provides a useful starting point for understanding how different approaches vary in structure and attention demands.
Mind Wandering Also Fell After Daily Meditation
The second major finding involved mind wandering.
Researchers assessed this using the Mind Wandering Questionnaire, which measures the tendency for attention to shift away from the task or experience currently being performed.
During the randomized phase, the meditation group showed a greater reduction in mind wandering than the waitlist group. The analysis produced F = 9.817, p = .005.
The finding was replicated after the waitlist participants received the intervention, with t = −4.146, p < .001.
The reduction also remained during the eight-week follow-up period.
As with anxiety, the strongest effects appeared among people who started with higher levels of mind wandering. Participants in the upper baseline quartiles experienced significant reductions, while those who already had relatively low levels showed little measurable change.
This is particularly relevant to the nature of focused-attention meditation.
A central feature of the practice is repeatedly noticing when attention has moved away from the intended focus and returning attention to the chosen object. The trial therefore provides an opportunity to examine whether repeated practice translates into measurable changes in everyday attentional experience.
The results do not prove that meditation eliminates mind wandering. Instead, they suggest that regular short practice may reduce self-reported tendencies toward it, particularly among people who begin with higher levels.
Sleep Improvements Depended On Baseline Sleep Problems
Sleep was another major outcome, but the results were more conditional.
Across the full sample, changes in sleep disturbance measured with the Pittsburgh Sleep Quality Index did not reach statistical significance during the main comparisons.
The researchers did, however, identify a baseline-dependent pattern.
Participants who entered the trial with greater sleep disturbance experienced significant improvements. Meanwhile, people with the lowest baseline sleep-disturbance levels showed little benefit and, in one analysis, had somewhat higher post-intervention scores.
This finding reinforces a pattern seen throughout the study: baseline symptom burden appears to matter.
A person beginning with considerable anxiety, frequent mind wandering or poor sleep has more opportunity for measurable improvement than someone who starts with relatively low symptoms.
The study therefore does not support a blanket claim that 10 minutes of meditation improves sleep in everyone.
Instead, it suggests that future research should pay closer attention to who starts with which symptoms when evaluating brief meditation interventions.
The Study Also Measured Stress And Rumination
The researchers did not restrict the investigation to anxiety and attention.
Secondary psychological measures included perceived stress, depressive symptoms, rumination, social connectedness, quality of life and character strengths.
The overall results indicated improvements across several of these secondary measures, although the strongest and most consistent findings centered on anxiety and mind wandering.
This distinction is important.
When a study measures many outcomes, some may show changes simply by chance. The researchers therefore used false-discovery-rate correction in their analyses to control for multiple comparisons.
The findings are strongest where the results were replicated across the randomized and delayed-intervention phases.
That replication feature gives the study additional value because the waitlist group effectively provided a second opportunity to observe changes after beginning the meditation intervention.
Cognitive Testing Produced More Modest Effects
The Stanford team also wanted to know whether short daily meditation could influence objective cognitive performance.
Participants completed web-based Stroop and 2-back working-memory tasks. These tests were intended to examine executive function and working memory through measures such as accuracy and reaction time.
The results were more restrained than the psychological findings.
At the whole-sample level, the researchers did not find significant between-group differences in accuracy during the randomized phase. Response times decreased over time in both groups, which the researchers interpreted as potentially reflecting familiarity with the tasks rather than a specific meditation effect.
However, some cognitive improvements appeared among participants who performed less well at baseline.
This suggests another possible baseline-dependent effect: people with more room for improvement may receive more measurable benefit from a brief intervention than people who already perform relatively well.
The evidence is therefore considerably weaker for broad cognitive enhancement than for reductions in anxiety and mind wandering.
Anxiety Declined More In The Meditation Group
Anxiety was one of the study’s primary psychological outcomes.
Researchers measured generalized anxiety using the GAD-7, a validated seven-item questionnaire commonly used to assess anxiety symptoms.
During the randomized phase, participants assigned to immediate meditation showed a greater reduction in anxiety than participants assigned to the waitlist. The between-group analysis produced F = 4.989, p = .038.
The researchers then used the delayed-intervention design to examine whether the effect could be replicated within the original waitlist group after those participants began meditation.
A comparable reduction occurred during that second phase, with a reported t = −3.849, p < .001. Anxiety reductions also remained evident during the eight-week follow-up period, with no evidence of the effect substantially rebounding.
The magnitude of change was not uniform across participants.
People entering the study with greater anxiety showed substantially larger improvements. Participants whose baseline GAD-7 scores fell into the 10–14 or 15–21 ranges demonstrated particularly strong reductions, while participants who began with minimal anxiety showed much less change.
That pattern suggests that a 10-minute practice may have more room to produce measurable change among people who begin with elevated symptoms than among people who already report very little anxiety.
Wearable Devices Added A Physiological Measure
The trial was unusual in combining self-reported psychological outcomes with wearable physiological data.
Participants used Fitbit Charge 6 devices to provide nightly measurements from which researchers derived resting heart rate and heart-rate variability.
This allowed the team to investigate whether subjective psychological changes were accompanied by measurable physiological changes.
Resting heart rate showed a nominal reduction, but the physiological findings were less pronounced than the psychological results. The researchers did not report a strong, across-the-board physiological transformation corresponding to the improvements in anxiety and mind wandering.
That is an important part of the study’s interpretation.
A meditation intervention can produce a measurable change in how people report feeling without necessarily producing equally large changes in every physiological measure.
The use of wearable data nevertheless provides a useful model for future studies, particularly because remote interventions can collect repeated physiological measurements without requiring participants to visit a laboratory every day.
The Fully Remote Design Matters
The Stanford trial was conducted entirely remotely, which was central to its low-burden design.
Participants received meditation instruction remotely and completed psychological and cognitive assessments online. Wearable devices provided additional physiological information.
This approach has an obvious advantage: participants do not need to travel to a university laboratory for every session.
It also makes a 10-minute intervention easier to study under conditions that resemble ordinary daily life.
The tradeoff is that researchers have less direct control over how participants practice. Independent home practice creates opportunities for missed sessions, distractions and differences in the surrounding environment.
For more information about Stanford’s research program, the Stanford clinical trial record identifies the study as NCT06014281 and lists Manish Saggar as the Stanford investigator.
The trial is now listed as not recruiting, consistent with the fact that the randomized study has already produced a research report.
The Study Does Not Show That Ten Minutes Works For Everyone
The most important limitation is that the findings should not be turned into a universal prescription.
The study involved adults who were not regular meditation practitioners and excluded people with several psychiatric or neurological conditions, current psychiatric treatment or medication use and regular long-term meditation experience.
That means the results cannot automatically be generalized to people with diagnosed anxiety disorders, people receiving mental-health treatment, experienced meditators or populations not represented in the study.
The sample was also relatively young, with a mean age of about 34 years.
Another limitation is the use of a waitlist control.
Waitlist participants did not receive another active intervention that required the same amount of attention, expectation and engagement. Consequently, the trial can show that the meditation program performed differently from waiting, but it cannot completely separate the meditation technique itself from expectations or participation effects.
The study is also currently a preprint. Although the trial was randomized and the researchers used repeated analyses and multimodal measurements, the findings have not yet received the additional scrutiny associated with peer review.
The Eight-Week Follow-Up Is One Of The More Useful Findings
One of the strongest practical aspects of the study is that researchers did not stop measuring participants immediately after the eight-week meditation period.
They followed participants for another eight weeks.
The reductions in anxiety and mind wandering remained during that period, with the researchers reporting no evidence of rebound.
That does not establish that the benefits would continue indefinitely.
It does, however, distinguish the findings from a study that measures participants immediately after their final meditation session and cannot determine whether any change lasts beyond the intervention.
The follow-up also raises a useful question for future studies: does continued meditation maintain or increase these effects, or can some benefits persist after formal daily practice ends?
This trial was not designed to answer that question definitively because continued practice during follow-up was optional.
What The Stanford Study Actually Shows
The Stanford-affiliated randomized trial provides evidence that a minimum of 10 minutes of focused-attention meditation per day for eight weeks can be associated with measurable improvements in psychological functioning among adults who were not regular meditators.
Among 299 randomized participants, the clearest effects were reductions in anxiety and mind wandering, with those changes remaining evident during an additional eight-week follow-up. Participants with higher baseline symptoms generally showed larger improvements.
Sleep improvements were more selective, appearing mainly among participants who began with greater sleep disturbance. Cognitive effects were smaller and tended to appear among lower-performing participants rather than uniformly across the sample.
The trial’s remote design and use of wearable technology also demonstrate how short meditation interventions can be studied outside a traditional laboratory environment.
But the findings should remain in proportion.
This is a 299-person randomized trial reported as a medRxiv preprint, not definitive clinical evidence that exactly 10 minutes of meditation will reduce anxiety in every person. The participants were relatively young, meditation-naive adults, and the study used a waitlist rather than an active control.
What the research does provide is a more precise answer to a practical question: a relatively small daily meditation commitment was enough to produce measurable reductions in anxiety and mind wandering in this particular group, and those changes persisted through the study’s eight-week follow-up.
That makes the Stanford trial a useful contribution to the growing evidence around brief, accessible meditation practices—while leaving open the larger questions of how the effects compare with other interventions, whether they generalize to clinical populations and how long the benefits can persist with continued or discontinued practice.