Homosexuality is estimated to be about 30% heritable, with genetic factors potentially increasing mating success in heterosexual males. Outside of humans, exclusively homosexual behavior is primarily observed in domestic rams, though macaques may exhibit similar sexual orientations to humans.
https://kwnsfk27.r.eu-west-1.awstrack.me/L0/https:%2F%2Fauthors.elsevier.com%2Fc%2F1kWEacQbJBLQ-/1/01020194ad2d8596-ea8f3fd9-551e-4bf1-97d0-20b627f90ef1-000000/vm3wYqKROujmEHrTCNdTCZZXHuY=411
https://redd.it/1iecoaw
@r_science
Research shows that a diet low in vegetables and fruits and high in red meat, fast food, and sugar-sweetened soft drinks was associated with accelerated biological aging even in young adulthood.
https://www.jyu.fi/en/news/suboptimal-dietary-patterns-may-accelerate-biological-aging-already-in-young-adulthood
https://redd.it/1ieamqk
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For the first time, DNA evidence has confirmed killer whales in Australia hunted a white shark for its liver, based on DNA analysis from the bite wounds of a large white shark washed ashore near Portland in Victoria in 2023
https://www.eurekalert.org/news-releases/1072258
https://redd.it/1ie4srj
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Canadian human-study research establishes gut biome restoration diet – new study
https://theconversation.com/why-we-should-all-try-to-eat-like-people-in-rural-papua-new-guinea-new-study-248064
https://redd.it/1ie24pc
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Grey matter changes in the brains of fathers postpartum.
https://jamanetwork.com/journals/jamapsychiatry/fullarticle/2825647?guestAccessKey=760be7ec-c00f-4a7c-9396-ced02a9de3ba&utm_source=silverchair&utm_medium=email&utm_campaign=article_alert-jamapsychiatry&utm_content=mostreadwidget&utm_term=012925&adv=
https://redd.it/1ie1et4
@r_science
Study found that employees who psychologically disengaged from work on their vacations saw the most improvement in their well-being. Ideally, that means not answering emails, taking work calls or even thinking about the office.
https://news.uga.edu/vacations-are-good-for-employees/
https://redd.it/1idzjbm
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Cannabidiol (CBD) is a natural component of the cannabis plant and has no intoxicating effects. Scientists provide the first evidence that CBD could help with alcohol problems. CBD reduces alcohol cravings by lowering brain activity in addiction-related areas.
https://www.technologynetworks.com/tn/news/cbd-may-reduce-cravings-for-people-suffering-with-alcoholism-395584
https://redd.it/1idwuld
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Scientists develop patch that can repair damaged hearts in healthy rhesus macaques | Cells taken from blood and ‘reprogrammed’ into heart muscle cells may help patients with heart failure
https://www.theguardian.com/science/2025/jan/29/scientists-develop-patch-repair-damage-heart-failure
https://redd.it/1idtja5
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An afternoon nap facilitates creative problem solving, finds new study. Sleep improves the ability to solve target problems that could not be initially solved.
https://onlinelibrary.wiley.com/doi/10.1111/jsr.14419
https://redd.it/1idqr9b
@r_science
Melting ice in the Greater Yellowstone Ecosystem of the Rocky Mountains exposes an ancient, mature stand of whitebark pine from the Holocene, 180 m in elevation above the modern treeline. Findings suggest it is possible the treeline may expand upslope with climate change.
https://www.pnas.org/doi/10.1073/pnas.2412162121
https://redd.it/1idod5f
@r_science
Scientists develop patch that can repair damaged hearts | Cells taken from blood and ‘reprogrammed’ into heart muscle cells may help patients with heart failure
https://www.theguardian.com/science/2025/jan/29/scientists-develop-patch-repair-damage-heart-failure
https://redd.it/1idly9s
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A new study has found small amounts of liquid ketamine administered in a clinical setting can significantly reduce symptoms of post-traumatic stress disorder, with fewer side effects.
https://www.usc.edu.au/about/unisc-news/news-archive/2025/january/low-doses-of-oral-ketamine-can-treat-ptsd-unisc-study
https://redd.it/1idjwbh
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A low-cost tool accurately distinguishes neurotypical children from children with autism just by watching them copy the dance moves of an on-screen avatar for a minute. It can even tell autism from ADHD, conditions that commonly overlap.
https://newatlas.com/adhd-autism/autism-motion-detection-diagnosis/
https://redd.it/1idiak4
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Over the period 1900–2023, more than half of all episodes of autocratization (democratic backsliding) take a U-turn shape in which they are followed by subsequent democratization. In the last 30 years, nearly three quarters of autocratization episodes are followed by democratization.
https://www.tandfonline.com/doi/full/10.1080/13510347.2024.2448742
https://redd.it/1ida8f7
@r_science
Moon is not as “geologically dead” as previously thought, new study reveals. Scientists discovered that small ridges located on the moon’s far side were notably younger than previously studied ridges on the near side.
https://cmns.umd.edu/news-events/news/moon-not-geologically-dead-previously-thought-new-study-reveals
https://redd.it/1id31q7
@r_science
Younger men tend to partner with women about 3 years younger, but as they aged, their partners became younger, with some older men in relationships with women a decade younger. Conversely, younger women tend to partner with men a few years older, but by age 60, women seek men of similar age.
https://www.psypost.org/romantic-age-gaps-evolve-over-time-new-psychology-research-shows/
https://redd.it/1iecxpr
@r_science
‘A neural fossil’: human ears try to move when listening - Researchers found that muscles move to orient ears toward sound source in vestigial reaction. It is believed that our ancestors lost their ability to move their ears about 25m years ago but the neural circuits still seem to be present.
https://www.theguardian.com/science/2025/jan/31/neural-fossil-human-ears-move-when-listening-scientists-say
https://redd.it/1ieajsh
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Currently, zero percent of the world’s thermoset materials are recycled (car tires, hip joints, bowling balls, etc) – they’re either incinerated or thrown in landfills. New plastic is made from a bio-sourced material that has crosslinked thermosets’ durability but can be easily recycled, degraded.
https://news.cornell.edu/stories/2025/01/durable-plastic-gets-sustainability-makeover
https://redd.it/1ie7f30
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Jupiter’s moon Europa is the subject of much speculation about extraterrestrial life, which could exist in the ocean buried beneath the body’s icy surface. Now researchers suggest that a small metallic core could lie at the centre of this moon.
https://www.nature.com/articles/s41550-024-02469-4
https://redd.it/1ie1z4b
@r_science
When a movie is led by female actors, reviewers dial up the sexism. An AI-driven analysis of 17,000 professional film reviews reveals that movies with female-dominated casts receive up to 149% more hostile sexism and 44% more benevolent sexism in their reviews compared to male-dominated films.
https://www.scimex.org/newsfeed/when-a-movie-is-led-by-female-actors-reviewers-dial-up-the-sexism
https://redd.it/1ie1vl7
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Scratching an itch can trigger more inflammation — but may also combat harmful bacteria
https://www.sciencenews.org/article/scratching-itch-good-bad
https://redd.it/1idwq8r
@r_science
Being Social May Delay Dementia Onset by Five Years. Findings suggest that more frequent social activity points to a 38% reduction in dementia risk and a 21% reduction in mild cognitive impairment risk, compared to the least socially active.
https://www.rush.edu/news/being-social-may-delay-dementia-onset-five-years
https://redd.it/1idu70c
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Man eating 6-9 pounds of butter and cheese a day develops ‘cholesterol hands’ while on carnivore diet: JAMA
https://www.fox13news.com/news/man-eating-6-9-pounds-butter-cheese-day-develops-cholesterol-hands-while-carnivore-diet-jama
https://redd.it/1iduh8b
@r_science
Science quickly needs to figure out a different (and better) way to publish findings. Public health is at risk.
https://kffhealthnews.org/news/article/cdc-trump-mmwr-bird-flu-studies-blocked-meddling/
https://redd.it/1idpdru
@r_science
Politically connected corporations received more exemptions from US tariffs on Chinese imports, study finds | Exemption grant process functioned as a “spoils system” rewarding political supporters and punishing opponents
https://www.eurekalert.org/news-releases/1072118
https://redd.it/1idms39
@r_science
Newly discovered fungus makes zombies out of cave spiders in Ireland - their behavior mirrored the behaviour of zombie ants infected by fungi of the genus Ophiocordyceps. The new fungal species has been named in honour of Sir David Attenborough.
https://www.cabi.org/news-article/new-fungal-species-named-in-honour-of-sir-david-attenborough-making-zombies-of-cave-spiders-on-the-island-of-ireland/
https://redd.it/1idkz8w
@r_science
A new study found that e-cigarette advocates (many with ties to Big Tobacco) dominate Twitter's tobacco policy discourse, amplifying anti-regulatory messages far beyond public sentiment.
https://journals.sagepub.com/doi/10.1177/20563051251314611
https://redd.it/1idg20b
@r_science
Rice scientists theoretically demonstrate particles other than bosons and fermions
https://news.rice.edu/news/2025/mathematical-methods-point-possibility-particles-long-thought-impossible
https://redd.it/1idbovs
@r_science
LGBTQ+ people in the US have a higher rate of many commonly diagnosed mental health conditions compared to straight peers. For example, bisexual or lesbian women had higher rates of all 10 mental health conditions studied compared to straight women.
https://www.scimex.org/newsfeed/mental-health-disparities-among-lgbtq-americans-not-inevitable
https://redd.it/1id7z16
@r_science
Romantic breakups linked to lower hippocampal brain volume in adults with childhood trauma | This effect was not observed in individuals with childhood maltreatment who had not gone through a breakup, suggesting that later-life stressors might exacerbate the consequences of early adversity.
https://www.psypost.org/romantic-breakups-linked-to-lower-hippocampal-brain-volume-in-adults-with-childhood-trauma/
https://redd.it/1id2u00
@r_science
