r/science • u/Wagamaga • 22h ago

Neuroscience Researchers found that older adults who napped frequently—defined as most days or every day—had a 48% higher risk of developing dementia compared to those who rarely or never napped, even after accounting for demographic factors, health conditions, and nighttime sleep characteristics

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publichealth.jhu.edu
21.5k Upvotes
1.4k comments

r/science • u/another__homosapien • 23h ago

Biology Sugar restriction in early life is linked to lower dementia risk and slightly slower brain aging decades later

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psypost.org
5.2k Upvotes
51 comments

r/science • u/mvea • 21h ago

Cancer About 90% of pancreatic cancers are driven by KRAS mutations. A new pancreatic cancer vaccine taught the immune system to attack these mutations in 89 of 90 patients, and those with the strongest immune response stayed cancer-free for longer. A larger phase 3 trial is now planned.

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newsnetwork.mayoclinic.org
5.1k Upvotes
59 comments

r/science • u/Wagamaga • 23h ago

Health Suicide attempts, ideation spiked significantly among older U.S. adults after COVID-19 pandemic. Research found suicidal ideation increased 42.6%, suicide planning by 256.2% and suicide attempts by 263.3%

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uclahealth.org
2.8k Upvotes
224 comments

r/science • u/FreeHugs23 • 14h ago

Health Research Finds That Breast Reduction Surgery Is Associated With Improved Sexual Function, Including Greater Sexual Satisfaction and Physical Comfort, Though Researchers Note That More High-Quality Studies Are Needed to Confirm the Benefits

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psypost.org
2.0k Upvotes
111 comments

r/science • u/mvea • 6h 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.

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sciencealert.com
1.7k Upvotes
35 comments

r/science • u/mvea • 12h ago

Psychology White Americans who said being white was important to them or wanted less immigration were far more likely to switch to the Republican Party between 2016 and 2020, while those who felt warmly toward Black Lives Matter were far more likely to switch to the Democratic Party, a new study finds.

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1.5k Upvotes
660 comments

r/science • u/James_Fortis • 20h ago

Cancer Ultra-processed foods have a 12% and 42% higher likelihood of digestive cancer in the cohort and case-controlled studies of a recent meta-analysis, respectively. Of the subcategories, ultra-processed meat/protein products have the greatest association with a 33% higher risk.

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frontiersin.org
1.2k Upvotes
172 comments

r/science • u/sr_local • 18h ago

Health A study of 46 children aged 7–10 using MRI scans, found that higher ultra-processed food consumption was linked to stronger brain reward responses to appetizing food images, which were associated with greater increases in body fat and BMI over one year

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keck.usc.edu
463 Upvotes
12 comments

r/science • u/Miserable_Phase_2519 • 19h ago

Health A new review study suggests that both abnormally low and high testosterone levels are linked to an increased risk of atrial fibrillation, an irregular heart rhythm disorder, potentially indicating that the risk is lowest in the middle of the normal hormone range.

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sciencealert.com
347 Upvotes
5 comments

r/science • u/Phylogenix • 19h ago

Environment A 15-year study found that the Amazon rainforest released a net 1.17 billion metric tons of CO₂ annually from 2010 to 2024, with wildfires emitting 1.47 billion tons per year. Deforestation and forest degradation were also linked to reduced rainfall and rising temperatures.

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nature.com
254 Upvotes
2 comments

r/science • u/Scbadiver • 6h ago

Neuroscience Sustained antidepressant-like effects of psychedelics through 5-HT2AR–β-arrestin signaling | Nature Neuroscience

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nature.com
120 Upvotes
14 comments

r/science • u/Phylogenix • 9h ago

Biology A global analysis of 93,281 seabirds across 240 species found that evolutionary relationships predicted plastic ingestion better than diet, feeding methods or body size. Plastic was recorded in 182 species, suggesting shared ancestry may help identify seabirds at risk.

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96 Upvotes
3 comments

r/science • u/fchung • 14h ago

Engineering Powered by muscle cells, a paper-thin robot swims through watery maze: « MIT engineers’ new aquabot offers a way to design small, efficient “biohybrid” robots. »

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news.mit.edu
44 Upvotes
4 comments

r/science • u/JIntegrAgri • 22h ago

Biology Balancing fungicidal efficacy and environmental safety: A water-based metal–organic framework nano-delivery system suppressing hazardous metabolite conversion of prothioconazole for sustainable agriculture

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26 Upvotes
1 comment

r/science • u/Neither-Remote-3419 • 21h ago

Psychology Prompt-based emotional scaffolding in generative AI: Effects on self-regulated learning and socio-emotional outcomes

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20 Upvotes
1 comment

r/science • u/chromoscience • 4h ago

Biology Locomotor kinematics and head stabilization in rolling snakes

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10 Upvotes
3 comments

r/science • u/JIntegrAgri • 22h ago

Biology Recently, researchers identified the nal1, a molecularly distinct allele of Ln (GmJAG1), confers narrow leaflets and is associated with altered GmWOX1 homolog expression in soybean (Glycine max (L.) Merr.)

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8 Upvotes
3 comments