Medical conditions that deprive testes of oxygen, like sleep apnoea, may be contributing to decline in male fertility over past 50 years, study suggests. High-altitude activities like hiking can also cause lack of oxygen in testis - fertility effects are temporary but take a few months to reverse.
https://www.scimex.org/newsfeed/from-high-altitude-hiking-to-sleep-apnoea-study-explores-the-impact-on-male-fertility
https://redd.it/1i7rq67
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"Forever chemicals" (PFAS) from non-stick cookware and waterproof clothing are wreaking havoc in the Arctic. A new study shows these pollutants disrupt fat metabolism, stress responses, and vital biological functions in polar bears and ringed seals, threatening their long-term survival.
https://doi.org/10.1016/j.envres.2025.120862
https://redd.it/1i7knx1
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A widely cited neuroscience study last year found that taking notes by hand instead of typing them was "beneficial for learning". New analysis published in the same academic journal argues that claim isn't supported by the results
https://hechingerreport.org/proof-points-writing-versus-typing-learning/
https://redd.it/1i7gb0o
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Frequent social media use tied to higher levels of irritability
https://jamanetwork.com/journals/jamanetworkopen/fullarticle/2828803
https://redd.it/1i7hyoi
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New leukaemia treatment gets FDA approval, remission in 77% of patients who have failed two or more therapies. Low rate of side effects also observed.
https://www.nejm.org/doi/full/10.1056/NEJMoa2406526
https://redd.it/1i7ex2b
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Adverse childhood experiences linked to increased defensive gun use through heightened threat sensitivity | This suggests that for some people, early traumatic experiences can shape a worldview where danger feels ever-present, potentially prompting the use of firearms.
https://www.psypost.org/adverse-childhood-experiences-linked-to-increased-defensive-gun-use-through-heightened-threat-sensitivity/
https://redd.it/1i7dagc
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A new study highlights how scaling up COVID-19 testing in the USA saved an estimated 1.4 million lives and averted 7 million hospitalisations. It emphasises the vital role of rapid testing in reducing severe outcomes and preparing for future pandemics.
https://www.thelancet.com/journals/lanpub/article/PIIS2468-2667(24)00279-2/fulltext
https://redd.it/1i783e6
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Researchers have discovered that proteins in the mollusk’s blood not only have bacteria-killing properties, raising the possibility of a new antibiotic, but also increase the effectiveness of some existing antibiotics.
https://newatlas.com/medical-tech/oyster-hemolymph-protein-antibacterial/
https://redd.it/1i78lpz
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Scientists identify neurons in mice that, once activated, change body's metabolic rate, induce hibernation-like state, reduce cardiac output, body temperature and energy expenditure. This could be step toward extending longevity and slowing metabolism of astronauts for long-duration space travel.
https://news.gsu.edu/2025/01/21/georgia-state-scientists-identify-neurons-in-mice-that-once-activated-can-change-bodys-metabolic-rate-induce-hibernation-like-state/
https://redd.it/1i778vv
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Animal agriculture contributes up to 34% of global greenhouse gas emissions. A new study find that transitioning to plant-based diets could reduce emissions by 68% this century.
https://academic.oup.com/oocc/article/4/1/kgae021/7825368?searchresult=1
https://redd.it/1i74uec
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The sexy and formidable male body: Study found with improvements in living conditions, men’s gains in height and weight are more than double those of women’s, increasing sexual size dimorphism, which confers on them advantages related to female choice and during physical competition with other men.
https://royalsocietypublishing.org/doi/10.1098/rsbl.2024.0565
https://redd.it/1i6xxcm
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For the first time, astronomers have traced a fast radio burst (FRB) to the outskirts of an ancient, dead, elliptical galaxy — an unprecedented home for a phenomenon previously associated with much younger galaxies.
https://news.northwestern.edu/stories/2025/01/first-fast-radio-burst-traced-to-old-dead-elliptical-galaxy/
https://redd.it/1i6udwp
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A new catalyst can turn methane into something useful: « MIT chemical engineers have devised a way to capture methane, a potent greenhouse gas, and convert it into polymers. »
https://news.mit.edu/2024/new-catalyst-can-turn-methane-into-something-useful-1204
https://redd.it/1i6qu08
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A large study of adults with ADHD found that 60% of these individuals reported some type of sleep disorder. Specifically, 36% reported having problems falling asleep (delayed sleep onset), 31% reported insomnia, and 29% reported restless legs syndrome/periodic limb movement disorder
https://www.psypost.org/sleep-problems-surprisingly-common-in-adults-with-adhd-study-reveals/#google_vignette
https://redd.it/1i6m9jk
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Unexpected finding from analysis of more than 130 million people was an association between antibiotics, antivirals and vaccines, and a reduced risk of dementia. The finding supports the hypothesis that some cases of the disease may be triggered by viral or bacterial infections.
https://www.theguardian.com/society/2025/jan/21/antibiotics-antivirals-and-vaccines-could-help-tackle-dementia-study-suggests
https://redd.it/1i6hmoh
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AI models struggle with expert-level global history knowledge
https://www.psypost.org/ai-models-struggle-with-expert-level-global-history-knowledge/
https://redd.it/1i7n6u1
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All NIH study sections = canceled indefinitely
gidmkhealthnerd/post/DFJNsiKz6vt" rel="nofollow">https://www.threads.net/@gidmkhealthnerd/post/DFJNsiKz6vt
https://redd.it/1i7o5w9
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Science has a reproducibility crisis on its hands, and biomedical researchers believe the infamous “publish or perish” research culture is behind it. Over 70% could not reproduce another scientist’s experiment. More than 62% attributed irreproducibility in science to “publish or perish” culture.
https://www.technologynetworks.com/tn/news/scientists-blame-publish-or-perish-culture-for-reproducibility-crisis-395293
https://redd.it/1i7lhgz
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A survey of San Francisco coyote scat shows that their diet includes a lot of chicken and pork scavenged from human food or fed to them, plenty of rats, gophers and racoons, but rarely cats.
https://www.ucdavis.edu/climate/news/dining-out-san-franciscos-coyotes
https://redd.it/1i7h1yl
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Radical-right populists are fueling a misinformation epidemic. Research found these actors rely heavily on falsehoods to exploit cultural fears, undermine democratic norms, and galvanize their base, making them the dominant drivers of today’s misinformation crisis.
https://www.zmescience.com/science/news-science/radical-right-misinformation/
https://redd.it/1i7ezhw
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Black immigrants attract white residents to neighborhoods, while native Black residents move out, study finds.
https://news.osu.edu/black-immigrants-attract-white-residents-to-neighborhoods/?utm_campaign=omc_science-medicine_fy24&utm_source=reddit&utm_medium=social
https://redd.it/1i7b0th
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Antibiotics, antivirals and vaccines could help tackle dementia, study suggests. Using drugs approved for other conditions could dramatically speed up hunt for cure, experts say.
https://www.theguardian.com/society/2025/jan/21/antibiotics-antivirals-and-vaccines-could-help-tackle-dementia-study-suggests
https://redd.it/1i79ozt
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New evidence suggests megaflood refilled the Mediterranean Sea five million years ago. “The Zanclean megaflood was an awe-inspiring natural phenomenon, with discharge rates and flow velocities dwarfing any other known floods in Earth’s history”
https://www.southampton.ac.uk/news/2025/01/new-evidence-suggests-megaflood-refilled-the-mediterranean-sea-five-million-years-ago.page
https://redd.it/1i772i7
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Extreme climate pushed thousands of lakes in West Greenland ‘across a tipping point,’. Instead of sequestering carbon dioxide in the summer, the lakes have become a source of it, with a 350% increase in the flux of this greenhouse gas from them.
https://umaine.edu/news/blog/2025/01/21/extreme-climate-pushed-thousands-of-lakes-in-west-greenland-across-a-tipping-point-study-finds/
https://redd.it/1i76sg7
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Cause of the Great Salt Lake to shrink in 2022 found: Lower streamflows only accounted for about two-thirds of the total decline in lake volume. The rest primarily came from an increase in lake evaporation due to warmer temperatures, which will only get worse as temperatures continue to rise.
https://www.eurekalert.org/news-releases/1071231
https://redd.it/1i6zh9c
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Muscular strength and good physical fitness could halve the risk of cancer patients dying from their disease. Combination of strength and fitness was associated with an 8-46% lower risk of death in patients with stage 3 or 4 cancer, and a 19-41% lower risk of death in lung or digestive cancers.
https://www.theguardian.com/science/2025/jan/22/fitness-and-muscle-strength-could-halve-cancer-patient-deaths-study-suggests
https://redd.it/1i6xs1f
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Insect-eye-inspired camera capturing 9,120 frames per second. Researchers have successfully developed a low-cost, high-speed, less than one millimeter thick camera that overcomes the limitations of frame rate and sensitivity faced by conventional high-speed cameras.
https://news.kaist.ac.kr/newsen/html/news/?mode=V&mng_no=43450
https://redd.it/1i6ul2i
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Mass shootings increase alcohol sales, study finds: Data from 35,000 alcohol retailers, covering more than half of American grocery and drug-stores from 2006–2019, found that public mass shootings predict a 3.5%–5.5% increase in weekly alcohol sales for at least two years
https://www.eurekalert.org/news-releases/1070914
https://redd.it/1i6kpwr
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World’s smallest biomedical robot could pave way for minimally invasive surgeries | At just 0.95 millimeters, it’s 60 percent smaller than any existing model.
https://www.nature.com/articles/s41467-024-55199-6
https://redd.it/1i6kujq
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More than three-quarters of U.S. older adults with dementia may be unaware of their diagnosis. That number is even higher — up to 85% — among Mexican Americans, who make up the largest share of the U.S. Hispanic and Latino population.
https://www.michiganmedicine.org/health-lab/85-mexican-americans-dementia-unaware-diagnosis-outpacing-overall-rate
https://redd.it/1i6hrgd
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