r/science • u/FreeHugs23 • 8h 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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12.3k Upvotes
446 comments

r/science • u/mvea • 10h 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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schaeffer.usc.edu
7.2k Upvotes
77 comments

r/science • u/Miserable_Phase_2519 • 12h 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
3.8k Upvotes
397 comments

r/science • u/LogicalDirect • 11h ago

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

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3.0k Upvotes
85 comments

r/science • u/mvea • 13h 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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2.3k Upvotes
41 comments

r/science • u/FreeHugs23 • 9h 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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1.3k Upvotes
88 comments

r/science • u/mvea • 2h ago

Neuroscience Autistic brains react less to being told "you're wrong," new study finds. People with autism showed weaker brain responses to negative feedback, and unlike others, their reactions didn't change with task difficulty, which may help explain why adapting to change feels harder.

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1.2k Upvotes
161 comments

r/science • u/Phylogenix • 21h 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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732 Upvotes
4 comments

r/science • u/hehehehehehehesiu • 8h 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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707 Upvotes
32 comments

r/science • u/Miserable_Phase_2519 • 6h 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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sciencealert.com
556 Upvotes
66 comments

r/science • u/JohnHammond94 • 3h ago

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

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news.exeter.ac.uk
447 Upvotes
11 comments

r/science • u/LogicalDirect • 12h ago

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

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frontiersin.org
404 Upvotes
14 comments

r/science • u/smurfyjenkins • 6h 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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218 Upvotes
105 comments

r/science • u/shinybrighthings • 18h ago

Psychology The bidirectional predictive association between methamphetamine use and depression

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110 Upvotes
45 comments

r/science • u/chromoscience • 17h ago

Biology Ultrarapid decision-making in an avian brain

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108 Upvotes
6 comments

r/science • u/mattnogames • 9h 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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94 Upvotes
8 comments

r/science • u/LHSCRICanada • 8h 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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79 Upvotes
3 comments

r/science • u/hehehehehehehesiu • 2h ago

Psychology Some people who can't picture things while awake still report seeing images in their dreams. A study of 205 adults found wide differences in how waking imagination and dream sensations lined up in people with aphantasia.

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77 Upvotes
13 comments

r/science • u/SlothSpeedRunning • 5h ago

Paleontology Researchers unearth fossil evidence of first fully marine amphibian

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50 Upvotes
1 comment

r/science • u/scientificamerican • 6h ago

AMA 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.

46 Upvotes
24 comments

r/science • u/Hrmbee • 6h 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
41 Upvotes
2 comments

r/science • u/shinybrighthings • 7h ago

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

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39 Upvotes
1 comment

r/science • u/Wagamaga • 10h 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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36 Upvotes
7 comments

r/science • u/sr_local • 4h 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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25 Upvotes
2 comments

r/science • u/PNASJournals • 2h ago

Paleontology This week in PNAS Journal Club: Three fossils of Ice Age American “cheetahs” found in the Yukon Territory offer the first full genome for the species. These extinct big cats were closely related to pumas, and ate a diet high in nitrogen, suggesting their main prey was fish, probably salmon.

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22 Upvotes
1 comment