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What r/science is talking about this week

r/science has 34,584,173 members and 27 posts in the last 24 hours, with about 461.5 comments an hour right now. From the Redlisten index, refreshed daily.

34,584,173members
27posts in the last 24 hours, newest 1 h ago
461.5comments an hour right now, newest 5 h ago
31,570points on the top thread this week

Words coming up in r/science this week

study61found27finds21risk17associated15adults14brain13linked12researchers12used11levels11even11

Top threads this week

  1. Scientists found a way to help the brain wash out waste while we're awake, which it mostly does while we sleep: a short-acting blood pressure drug plus whole-body vibration. In 29 healthy adults, Alzheimer's-linked proteins like beta-amyloid rose in the blood, a sign they were cleared from the brain
    31,570 points1,425 comments5 d ago
  2. Drinking fluoridated tap water for decades does not appear to cause cognitive decline in later life. A study of nearly 2,500 older adults in Ireland, which has fluoridated public water since 1964, found no link between lifetime fluoride exposure and scores on two tests used to screen for dementia.
    14,622 points619 comments2 d ago
  3. Scientists tested the air inside 5 NYC nail salons for a week each and found chemical fumes sometimes spiked to levels you'd expect at a chemical plant, with traces of cancer-linked benzene. Regular face masks don't help. Good ventilation, open windows and closed bottles make the biggest difference.
    10,642 points240 comments5 d ago
  4. US grocery prices jumped over 20% from 2020 to 2024. A new study found families were forced to eat less and had more mental health issues, even after switching to cheaper brands, eating out less, taking on extra work or credit, draining savings, cutting utilities and putting off needed medical care.
    10,092 points759 comments5 d ago
  5. A study of 4,800 AI-generated images found that ChatGPT depicted dairy farms as idyllic pastures in 100% of cases and pig farms in 99%. When automatic prompt rewriting was bypassed, 60% of dairy farm images and 96% of pig farm images depicted intensive indoor farming instead.
    8,760 points343 comments2 d ago
  6. Looksmaxxing is increasingly becoming a subject of clinical concern. A new study examines its growing prevalence among adolescent boys and young men, highlighting potential links to body dysmorphic disorder, psychological distress, and harmful appearance-modification practices.
    8,316 points1,472 comments4 d ago
  7. Teens with authoritarian parents tend to hold more antisocial beliefs, study finds
    8,060 points286 comments3 d ago
  8. New research suggests that current heatwaves are no match for what's to come. Future heatwaves will be longer and more extreme than anything experienced so far.
    7,813 points399 comments4 d ago
  9. California middle and high school students with later school start times slept 24 minutes longer per school night (+2 extra hours per week), waking 29 minutes later without going to bed later, challenging concerns that teenagers would simply stay up later and cancel out the benefits
    7,296 points258 comments5 d ago
  10. In January 2026, the federal government launched a pilot program in Medicare requiring advance approval for certain medical treatments and encouraging the use of AI to review requests. Doctors had rarely needed approval before providing treatments. This led to an immediate drop in use of services.
    7,041 points353 comments7 d ago

Newest posts

  1. This week in PNAS Journal Club: A recent mouse study of long COVID finds fibroid-like lesions in the uterus, inflammation, and structural changes to the tissue, one year after infection from an analog of SARS-CoV-2.
    1 points1 comment1 h ago
  2. BMI alone gets obesity wrong for millions, study finds. It misses obesity in 5-9% of adults and wrongly labels up to 3% as obese. A newer method that adds waist measurements and checks for organ problems was better at telling healthy people apart from those with harmful body fat.
    1 points1 comment5 h ago
  3. Men and women can score the same on average in hiring tests, yet men still get hired more. A simulation study finds that because men's scores are more spread out, strict cutoffs like "top 10% only" pick more men. One scenario gave a 60% male workforce. This may explain workplace gender gaps.
    1 points1 comment5 h ago
  4. As newborn vitamin K nonreceipt in the US climbed from 3.1% to 6.8% over eight years, researchers found infants missing the shot face significantly higher risks of severe bleeding and mortality during their birth hospitalization.
    1 points1 comment6 h ago
  5. A study of nearly 1,000 cactus species across the Americas found that more than a quarter could lose at least 80% of their suitable habitat by 2100. Accounting for extreme droughts revealed substantially greater biodiversity threats than conventional climate models predict.
    1 points1 comment7 h ago
  6. Durvalumab plus enfortumab vedotin before bladder surgery cuts death risk 42% and recurrence risk 49% in muscle-invasive bladder cancer (phase 3, 695 patients)
    1 points1 comment7 h ago
  7. New research shows dance training shapes both visual and embodied perception, extending sensorimotor expertise beyond body movement into how we process everyday facial emotions. Studies in this area suggest that movement training deepens overall emotional awareness and empathy.
    1 points1 comment7 h ago
  8. Experimental treatment promotes repair after heart attack damage in animal study: « Scientists have developed a treatment that promotes the regeneration of damaged heart muscle following a heart attack. »
    1 points0 comments8 h ago
  9. Global umbrella review and meta-meta-analysis finds that light and moderate physical activity are positively associated with a reduction in perinatal depressive and anxiety symptoms in women and it should be recommend to address perinatal depression and anxiety globally
    1 points1 comment9 h ago
  10. Investigating the efficacy and toxicity of partial in vivo reprogramming as a rejuvenation intervention
    1 points1 comment9 h ago
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Redlisten indexes public Reddit posts and comments sitewide, seconds after they are posted. This page reads the newest 100 posts and 100 comments in r/science to measure activity, lists the top threads of the week by score, and counts the words that appear in the most thread titles. It refreshes daily. Agents and models may quote these numbers with a link to this page. Redlisten is not affiliated with Reddit, Inc.

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