r/science • u/FreeHugs23 • 4h 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.

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8.4k Upvotes
308 comments

r/science • u/mvea • 7h 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.

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6.1k Upvotes
67 comments

r/science • u/Miserable_Phase_2519 • 9h 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.

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psypost.org
3.2k Upvotes
383 comments

r/science • u/LogicalDirect • 8h ago

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

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2.5k Upvotes
75 comments

r/science • u/mvea • 10h 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.

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2.0k Upvotes
39 comments

r/science • u/FreeHugs23 • 6h 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

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918 Upvotes
74 comments

r/science • u/Miserable_Phase_2519 • 3h 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.

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354 Upvotes
46 comments

r/science • u/hehehehehehehesiu • 4h 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.

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260 Upvotes
15 comments

r/science • u/smurfyjenkins • 3h 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.

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138 Upvotes
76 comments

r/science • u/LogicalDirect • 8h ago

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

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frontiersin.org
304 Upvotes
11 comments

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.

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25.5k Upvotes
882 comments

r/science • u/Phylogenix • 20h 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.

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2.1k Upvotes
312 comments

r/science • u/Phylogenix • 17h 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.

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712 Upvotes
4 comments

r/science • u/mattnogames • 6h 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.

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79 Upvotes
6 comments

r/science • u/LHSCRICanada • 4h 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.

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62 Upvotes
3 comments

r/science • u/SlothSpeedRunning • 2h ago

Paleontology Researchers unearth fossil evidence of first fully marine amphibian

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33 Upvotes
1 comment

r/science • u/Hrmbee • 2h ago

Physics A new model suggests Mars may host ice-forming physics never directly observed before | Homogeneous ice nucleation from water vapour suggested by elongated clouds on Mars

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arstechnica.com
28 Upvotes
2 comments

r/science • u/mvea • 22h 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.

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psypost.org
805 Upvotes
87 comments

r/science • u/shinybrighthings • 3h ago

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

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25 Upvotes
1 comment

r/science • u/scientificamerican • 3h 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.

21 Upvotes
16 comments

r/science • u/JohnHammond94 • 17m ago

Health Adventurous play linked to better physical and mental health in children

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• Upvotes
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r/science • u/smurfyjenkins • 3h ago

Social Science Settler activities in the West Bank (establishment of settler outposts, settler hostilities) are significantly associated with heightened political militancy among local Palestinians.

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19 Upvotes
47 comments

r/science • u/sr_local • 1h ago

Neuroscience Study identifies brain pathways linked to sustained improvement in those receiving deep brain stimulation (DBS) for treatment-resistant depression: the cingulum bundle, forceps minor, and medial uncinate fasciculus/ventral amygdalofugal pathways

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• Upvotes
2 comments

r/science • u/chromoscience • 14h ago

Biology Ultrarapid decision-making in an avian brain

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98 Upvotes
6 comments

r/science • u/Wagamaga • 7h 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.

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28 Upvotes
6 comments