andrewducker + humans   60

Massive genetic study shows how humans are evolving
* Analysis of 215,000 people's DNA suggests variants that shorten life are being selected against.
* tested more than 8 million common mutations, and found two that seemed to become less prevalent with age. A variant of the APOE gene, which is strongly linked to Alzheimer’s disease, was rarely found in women over 70. And a mutation in the CHRNA3 gene associated with heavy smoking in men petered out in the population starting in middle age. People without these mutations have a survival edge and are more likely to live longer, the researchers suggest.
* certain groups of genetic mutations, which individually would not have a measurable effect but together accounted for health threats, appeared less often in people who were expected to have long lifespans than in those who weren't. These included predispositions to asthma, high body mass index and high cholesterol.
* Most surprising, however, was the finding that sets of mutations that delay puberty and childbearing are more prevalent in long-lived people.
genetics  age  humans  evolution 
5 weeks ago by andrewducker
The story of music is the story of humans
Are there any other animals that dance? Because "song" seems reasonably common in some senses, but rhythm seems specific to humans
music  humans  prehistory 
june 2017 by andrewducker
Sushi eye view
The view from a camera on a sushi conveyor belt. All of human life is here, and most of it is pointing at the camera and asking "Why is that there?"
japan  video  humans 
march 2009 by andrewducker

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