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Can two short nights make you look less attractive?
A controlled sleep-restriction study found small changes in how strangers rated attractiveness, health, sleepiness and willingness to socialize.
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How do you check whether a cited clinical trial exists?
A commercial page cited three KPV trials with 184 participants. The named journal has one KPV paper, on mice, and three registers we searched list no study.
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Do GLP-1 drugs cause disproportionate muscle loss?
Human studies show real lean-mass loss as fat falls more, but direct muscle and function evidence is too thin to prove disproportionate wasting.
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Does oral semaglutide match injectable semaglutide for weight loss?
The approved 25 mg tablet and 2.4 mg weekly injection produced close weight loss in separate trials, but no head-to-head proves equivalence.
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What does human evidence show about retatrutide?
Randomized trials show large weight and glucose reductions, but most Phase 3 obesity results lack full publication and no retatrutide product is approved.
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Do compounded GLP-1 drugs have the same human evidence?
None of the three studies giving people compounded GLP-1 drugs tested equivalence; the one comparison found slightly less weight loss than the approved drug.
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Which claims for seven FDA-reviewed peptides were tested in people?
Four were given to people. None had the same peptide, delivery method, group and claimed result repeated by an independent team.
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Can a four-day week preserve productivity?
Self-selected pilot reports found no clear revenue loss as hours fell, but productivity was rarely measured, so they cannot promise universal output.
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Can a short nap improve performance?
A 381-person meta-analysis found a small cognitive benefit, strongest for alertness; studies averaged 55-minute naps and immediate results varied.
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Can asking more questions make people like you?
Text-chat studies found a liking benefit; speed-dating linked follow-up questions to second-date interest, with responsiveness more useful than counts.
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Can caffeine protect attention after sleep loss?
A 45-paper meta-analysis found caffeine improved vigilance after sleep loss, not procedural control; gains faded over repeated restricted nights.
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Can generosity raise social status?
Visible contributors gained prestige and partner choices in group games, but giving may signal cooperative values, economic capacity or strategy.
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Can saying thank you strengthen a relationship?
A month-long trial changed only two of seven outcomes—positive emotion and adaptation, not overall satisfaction; benefits tracked feeling understood.
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Does mentorship improve early-career outcomes?
Randomized programs improved new-hire productivity and some STEM outcomes; a 2026 workshop changed belonging, not publication or advancement.
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Can structured self-disclosure create closeness?
A 45-minute experiment made strangers feel closer through escalating reciprocal tasks, but showed a temporary feeling—not love, friendship or commitment.
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Are dominance and prestige different routes to social status?
Prestige predicted likability and freely given deference; dominance predicted rank without it, and the link weakened in some longer studies.
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Do follower counts change credibility?
Twitter and Instagram experiments found follower counts could raise, lower or not change credibility; effects depended on account and post conditions.
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Do job referrals widen opportunity gaps?
A randomized employee program reduced attrition and labor costs, but incentives changed referrals and hiring or promotion gaps remain unresolved.
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What does a visible luxury logo signal?
Prominent logos can raise status but also reduce perceived warmth when they look boastful; a logo alone cannot reveal wealth, motive or insecurity.
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Do names still change job callback rates?
Across 83,000+ U.S. applications, Black-name contact rates were 2.1 points lower than White-name rates; a Finnish replication found uneven change by 2024.
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Do shared experiences feel more intense?
Chocolate studies found more-extreme ratings, not direct intensity; a 2016 same-room study raised intensity, while video studies found no average effect.
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Do wearables increase physical activity?
Across 121 trials, programs added about 1,235 daily steps and 49 active minutes weekly; sedentary time was unclear and hardware was rarely used alone.
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Can a silent phone weaken face-to-face conversation?
Two small studies reported weaker connection around a nearby phone, but later replications and a meta-analysis found no reliable mere-presence effect.
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Does creatine improve memory?
A corrected meta-analysis found no significant overall memory effect, though an older-adult subgroup remained; sleep-loss trials test a narrower response.
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Does Emideltide or DSIP improve sleep?
Small IV studies found no established insomnia benefit and none tested subcutaneous use; in 2026, PCAC's nonbinding 503A vote was 6–7–1 against both forms.
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Are Epitalon's sleep and longevity claims backed by human evidence?
A small human study measured a melatonin metabolite, not sleep; longevity claims come from cells or animals, and a 2026 panel vote was not approval.
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Does feeling understood predict relationship wellbeing?
Feeling known tracked satisfaction and daily understanding tracked same-day wellbeing; a broader measure predicted only one of two long-term outcomes.
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Does KPV have human evidence?
FDA found no human KPV trial, pharmacokinetic study, case report or documented exposure; cell, skin and animal studies cannot establish efficacy or safety.
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Does looking busy at work raise perceived status?
Long work raised perceived status in U.S. experiments, Italian samples reversed the pattern, and a German replication rated conspicuous leisure higher.
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Does MOTS-c have human metabolic evidence?
Studies track natural MOTS-c during exercise, but FDA found no human administration data; a 120-person Phase 2a trial is recruiting without results.
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Does music improve exercise performance?
Across 139 studies, music slightly improved performance and made exercise feel better; newer evidence favored strength and power over speed or endurance.
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Does pay transparency narrow gender pay gaps?
Pay gaps narrowed after salary disclosure in Canadian universities and Danish firms, but not after salary reports in Austria or a request right in Germany.
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Does similarity shape who becomes friends?
Across 1,523 pairs, similarity appeared early, not through closeness; among 41 students, neural alignment did not separate friends from all non-friends.
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Can an upward social media comparison lower self-esteem?
In a 128-person experiment, high network activity slightly lowered immediate self-esteem; newer evidence does not support a universal platform verdict.
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Does a lower voice make you seem higher status?
Lower pitch raised perceived dominance and leader appeal, but prestige and trust varied; real-world success evidence was correlational and contextual.
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Does working from home improve performance?
Field trials range from an 18% decline to a 13% gain; hybrid work was neutral, while one office day monthly raised calls per hour in June 2026.
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How much performance can deliberate practice explain?
A corrected 88-study meta-analysis linked practice to 14% of performance variance; 44,213-player chess data linked practice type to learning efficiency.
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Is BPC-157 supported by human evidence?
FDA found two abstract-only trials and three uncontrolled reports with at most 17 people; none proves efficacy, and a 120-person trial is recruiting.
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What did the 2026 FDA peptide hearing actually change?
An advisory committee backed 503A listing for six of seven peptides in free-base and acetate forms; no drug was approved and FDA action is pending.
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What does human evidence show about Semax?
Semax has human studies, but no replicated, well-controlled trial shows better cognition in healthy adults, and FDA found no human pharmacokinetic study.
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What separates TB-500 from thymosin beta-4?
TB-500 is a seven-amino-acid fragment, not 43-amino-acid thymosin beta-4; FDA found no human administration evidence, so results do not transfer.
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Why do humblebrags backfire?
A nine-study program linked humblebrags to lower sincerity and liking; some behavior changed, while ephemeral-post studies found no reliable penalty.
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Can a clear invitation make strangers more likely to talk?
A randomized field experiment found that a clear signal of openness increased reported interaction between strangers—but not every measure of connection.
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When does tracking turn play into work?
Six experiments found that measurement could increase walking or reading while reducing enjoyment by making an activity feel more like work.
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Were the weakest LinkedIn ties best for finding a new job?
Randomized LinkedIn experiments found larger marginal job-transmission estimates for moderately weak ties, with nonlinear and platform-specific results.
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Which social connection best predicts upward mobility?
Across US counties, economic connectedness was strongly associated with upward mobility—but the 72.2-million-user study does not prove individual causation.
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Can an if-then plan close the gap between intention and action?
A meta-analysis of 642 tests found that cue-linked if-then plans helped on average, but robust adjustment cut the estimated effect substantially.
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Is higher local income linked to lower personal happiness?
A US panel study linked higher local earnings to lower self-reported happiness after accounting for own income—but the evidence remains observational.
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Does tracking progress make goals more achievable?
A meta-analysis of 138 randomized studies found that progress-monitoring interventions improved goal attainment on average, with wide variation.
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Is sharing the same space enough to bridge class lines?
A 70.3-million-user network study found that exposure and measured friending bias each accounted for about half of cross-class disconnection.
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Can one email change how workers feel about their pay?
A randomized salary-database email changed satisfaction and job-search intentions for below-median workers, with no measured gain above the median.
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