r/science • u/FreeHugs23 • 1h ago

Medicine A simple liquid can stop cavities without drilling | Scientists have confirmed that silver diamine fluoride, an inexpensive liquid can stop tooth decay in seconds without drilling or anesthesia, potentially transforming cavity treatment for millions.

• Upvotes

r/science • u/mvea • 4h ago

Neuroscience When the UK made teens stay in school one extra year (until age 16) in 1972, people who got that extra year had fewer dementia diagnoses nearly 50 years later. The benefit even held for people with high genetic risk, suggesting schooling itself protects the brain and your genes aren't your destiny.

schaeffer.usc.edu

4.5k Upvotes

r/science • u/Miserable_Phase_2519 • 6h ago

Psychology Young adults who fear relationship rejection suffer from higher death anxiety, which triggers increased depression, anxiety, and OCD symptoms, especially if they believe death is the absolute end of existence, a new study claims.

2.3k Upvotes

r/science • u/LogicalDirect • 5h ago

Environment US drinking water could contain double the reported PFAS levels, model estimates

1.9k Upvotes

r/science • u/mvea • 7h ago

Neuroscience Scientists made a 'low-oxygen hypoxia pill': two drugs that make blood release less oxygen into tissues. Given daily to mice that already had Parkinson's-like movement problems, it improved their movement within 1-2 weeks. It also more than doubled lifespan in mice with a rare energy disorder.

sciencealert.com

1.6k Upvotes

r/science • u/FreeHugs23 • 3h ago

Psychology People With Psychopathic Traits May Enjoy Fear Because They Experience Thrill and Excitement Rather Than Distress When Facing Frightening Situations, Offering Insights Into How Personality Traits Shape Emotional Responses to Fear

534 Upvotes

r/science • u/mvea • 1d ago

Neuroscience Magic mushroom compound psilocybin grows new brain connections within 24 hours and repairs circuits damaged by chronic stress in mice. Scientists found the brain rewiring runs on a different pathway than the trip itself, opening the door to fast-acting depression drugs without the hallucinations.

25.2k Upvotes

r/science • u/Phylogenix • 17h ago

Health A UK modelling study estimated that reducing red and processed meat consumption by 35–50% and replacing it with vegetables and legumes could increase life expectancy by 7–9 months and prevent 3.4–4.5 million chronic disease cases over 30 years, with most benefits linked to cardiovascular health.

link.springer.com

2.1k Upvotes

r/science • u/LogicalDirect • 5h ago

Animal Science Mother bats’ hearts beat faster at the sound of their own babies’ cries

frontiersin.org

185 Upvotes

r/science • u/Miserable_Phase_2519 • 27m ago

Medicine A clinical trial found that a nasal spray made from a toad venom chemical can quickly ease severe depression for weeks, though some experts argue it isn't as fully effective as other treatments like ketamine.

sciencealert.com

• Upvotes

r/science • u/Phylogenix • 14h ago

Animal Science A study of biochemical records preserved in humpback whale baleen found that the 2014–2016 Pacific marine heatwave was associated with reduced metabolic activity, nutritional stress and potentially impaired reproduction, revealing how extreme ocean warming may affect whale physiology.

linkinghub.elsevier.com

705 Upvotes

r/science • u/mattnogames • 3h ago

Cancer New study in Cancer Discovery provides evidence that breast cancer metastases acquire new mutations during clinical latency that contribute to metastatic outgrowth, challenging the view that metastatic potential is fully established in the primary tumor.

aacrjournals.org

62 Upvotes

r/science • u/hehehehehehehesiu • 1h ago

Psychology After one night without sleep, people made more mistakes and were less likely to notice them. In a study of 30 adults, both effects became stronger the longer participants continued the task.

• Upvotes

r/science • u/LHSCRICanada • 1h ago

Medicine Most pregnancies after living kidney donation are uncomplicated, according to a new Canadian study that provides a clearer picture of pregnancy outcomes among kidney donors. The study, published in JAMA, provides clearer evidence to inform donation decisions.

• Upvotes

r/science • u/mvea • 19h ago

Psychology Angry voters lean toward tough, dominant-looking leaders, while fearful voters prefer trustworthy-looking faces, a new 2026 American study finds. The effect was small (about 3 points) but worked the same way for Democrats and Republicans, though Republicans liked dominant faces more overall.

778 Upvotes

r/science • u/smurfyjenkins • 32m ago

Social Science The Symbolic Politics of Housing – People oppose new housing if they believe it benefits groups they dislike (such as developers, investors, certain politicians, the wealthy). People do not have principled thinking on housing policy or follow their own material interests.

• Upvotes

r/science • u/chromoscience • 11h ago

Biology Ultrarapid decision-making in an avian brain

99 Upvotes

r/science • u/shinybrighthings • 12h ago

Psychology The bidirectional predictive association between methamphetamine use and depression

pubmed.ncbi.nlm.nih.gov

89 Upvotes

r/science • u/Wagamaga • 4h ago

Health A large study found that emergency department visits and hospitalizations for substance use among young mothers increased by 5% per year, similar to rates among childless women. Young mothers under 25 drove these increases, with rates growing four times faster than among other females.

21 Upvotes

r/science • u/shinybrighthings • 59m ago

Cancer Estrogen receptor modulation by a newly-identified cannabinoid in a preclinical model of breast cancer

pubmed.ncbi.nlm.nih.gov

• Upvotes

r/science • u/Wagamaga • 1d ago

Neuroscience Different sources of fine particle air pollution show distinct, subtle links to how the developing brains of children communicate. The cross-sectional analysis at ages 9 to 11 identified consistent links between specific pollution sources and connectivity across sensory and motor networks

622 Upvotes

r/science • u/Miserable_Phase_2519 • 1d ago

Psychology A new study indicates that adults who experience severe material disruptions after a breakup, such as moving or changing financial circumstances, report higher levels of ambiguity and flux regarding their sexual identity, whereas psychological distress does not show the same link.

1.1k Upvotes

r/science • u/scientificamerican • 19m ago

Physics I'm Philipp Strasberg, a theoretical physicist, and I'm here with Scientific American to answer your questions about the possibility of a multiverse. Ask Me Anything on 10/27.

• Upvotes

r/science • u/mvea • 1d ago

Health Scientists at Johns Hopkins may have found why so many men’s prostates grow bigger with age: a newly identified cell type (WIF1+ basal cells) packed around the urethra, right where enlargement happens. This could explain the slow, stop-start peeing after 50 and become a target for future treatments.

sciencealert.com

3.4k Upvotes

r/science • u/JIntegrAgri • 6h ago

Environment Recently researchers found that silver nanoparticles as a multifunctional nanotechnology for green control of fungal stress and microplastic-associated heavy metal toxicity in soybean

11 Upvotes

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