Hacker News with Generative AI: Human Biology

First map of human brain mitochondria is 'groundbreaking' achievement (nature.com)
Scientists have created the first map of the crucial structures called mitochondria throughout the entire brain ― a feat that could help to unravel age-related brain disorders1.

Science, Neuroscience, Medicine, Human Biology

12 points by XzetaU8 27 days ago | 0 comments

Population stratification led to a decade of false genetic findings (theinfinitesimal.substack.com)
How population stratification led to a decade of sensationally false genetic findings

Genetics, Science, Research, Bias, Human Biology

32 points by SubiculumCode 27 days ago | 0 comments

Woman who lived to age 117 had genes keeping her cells 'younger', study shows (theguardian.com)
The US-born woman who was the world’s oldest living person before she died in Spain last August at age 117 once attributed her longevity to “luck and good genetics”. And, evidently, Maria Branyas Morera was right.

Longevity, Genetics, Science, Health, Human Biology

14 points by XzetaU8 40 days ago | 4 comments

Engineering of human cells reveals genome's resilience to structural changes (phys.org)
The most complex engineering of human cell lines ever has been achieved by scientists, revealing that our genomes are more resilient to significant structural changes than was previously thought.

Genetics, Biology, Science, Human Biology, Genome

48 points by PaulHoule 70 days ago | 6 comments

The secret behind sharp vision: the benefits of tiny eye movements (medicalxpress.com)
Even when we think we are holding our gaze perfectly still, our eyes make tiny, involuntary movements. While these "fixational eye movements" might seem like they would blur our vision, new research reveals they actually help us see fine details more clearly.

Vision, Neuroscience, Human Biology, Research

7 points by bikenaga 73 days ago | 0 comments

'Obelisks', a new class of life living inside humans (bgr.com)
Researchers just discovered an entirely new class of life living inside humans

Biology, Microbiology, Human Biology, Science, Research

109 points by Ziggy_Zaggy 83 days ago | 25 comments

Ear muscle we thought humans didn't use activates when people listen hard (frontiersin.org)
If you can wiggle your ears, you can use muscles that helped our distant ancestors listen closely.

Human Biology, Evolution, Science, Hearing

247 points by geox 85 days ago | 197 comments

Men have grown twice as much as women over past century, study shows (theguardian.com)
Amid the profound changes humanity has witnessed, one might be forgiven for failing to notice a rise in sexy and formidable men: those tall, broad-shouldered types that are strangers to self-doubt.

Human Biology, Gender Differences, Demographics, Social Change

13 points by pseudolus 94 days ago | 0 comments

Why some people can get away with only a little sleep every night (pbs.org)
Everyone has heard that it’s vital to get seven to nine hours of sleep a night, a recommendation repeated so often it has become gospel. Get anything less, and you are more likely to suffer from poor health in the short and long term — memory problems, metabolic issues, depression, dementia, heart disease, a weakened immune system.

Sleep, Health, Science, Human Biology

5 points by giuliomagnifico 120 days ago | 1 comments

Could Humans Hibernate? (aeon.co)
The conventional view is that humans and other creatures around us live between periods of waking and sleeping. But it is not true. Many have mastered the art of hibernating, which allows them to spend quite a lot of their life in a mysterious state of suspended animation – sometimes more than half of it. What is hibernation, and is it something that humans might be capable of?

Biology, Science, Human Biology, Sleep

14 points by gmays 156 days ago | 11 comments

What's so special about the human brain? (nature.com)
Torrents of data from cell atlases, brain organoids and other methods are finally delivering answers to an age-old question.

Neuroscience, Human Biology, Research, Science

5 points by bryanrasmussen 178 days ago | 0 comments

The mystery of why left-handers are so much rarer (2016) (bbc.com)
Relatively few people are lefties, and it’s a puzzle why. Still, the science of handedness is revealing fascinating insights about you – from how it could change the way you think, to the fact that you might be ‘left-eared’.

Science, Genetics, Human Biology

103 points by blubbb 202 days ago | 279 comments

The human heart shows signs of ageing after just a month in space (nature.com)
Over the course of just one month in space, engineered human heart tissue got weaker, its ‘beating’ patterns became irregular and it underwent molecular and genetic changes that mimicked the effect of ageing1.

Space Exploration, Human Biology, Aging, Health

19 points by belter 213 days ago | 6 comments

Puberty Hasn't Changed Since the Ice Age (nautil.us)
The blueprint was set at least 25,000 years ago.

Human Biology, Evolution, Science

21 points by dnetesn 217 days ago | 7 comments

Scientists find humans age dramatically in two bursts – at 44, then 60 (theguardian.com)

Human Biology, Aging, Science, Health

77 points by nemoniac 255 days ago | 11 comments

Evidence for ~12-h ultradian gene programs in humans (nature.com)

Science, Human Biology, Genetics, Circadian Rhythms

67 points by XzetaU8 259 days ago | 11 comments

Human reproduction comes at the expense of faster aging and a shorter life (biorxiv.org)