This Blog AMICOR is a communication instrument of a group of friends primarily interested in health promotion, with a focus on cardiovascular diseases prevention.
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Sunday, March 20, 2022
3.075 - AMICOR (24)
3.075 - AMICOR (24)
#Dra. Valderês A. Robinson Achutti (*13/06/1931+15/06/2021)
Sleep is essential for our vitality and health, yet over a third of Americans are sleeping less than the CDC-recommended seven hours each night. As we age, deterioration in sleep quantity and quality becomes even worse, with people over 65 especially prone to insomnia. Memory decline and dementia have been linked to age-related sleep disruption, and the sleep tech industry is booming in response to what is fast being acknowledged as a public health crisis.
With March being the month for sleep awareness and International Women’s Day, in this issue of The Abstract we explore the dramatic impact sleep has on health, from calorie intake to how postpartum sleep deprivation ages women, and new insights that may help inform the development of more effective treatments for age-related sleep decline. We also explore how even mild cases of COVID-19 can age the brain and the effect that just one daily alcoholic drink has on brain volume.
Getting enough sleep could burn an extra 270 calories a day
Sleep more, eat less? A recent study published in JAMA Internal Medicine showed that overweight study participants who extended their sleep from less than 6.5 hours a night to ~7.5 hours took in an average of 270 calories less per day than the control group, and exhibited a statistically significant reduction in weight. If the effects were sustained long term, the results of this study would predict a weight reduction of ~26.5 lbs over three years—just from sleeping 1.2 hours more a day. The results also suggest that extending sleep to even longer periods would result in greater success in weight loss. Reducing electronic use appeared to be a key intervention that helped with sleep extension among participants.
“We’ve shown that in real life, without making any other lifestyle changes, you can extend your sleep and eat fewer calories,” says lead researcher Dr. Esra Tasali, Director of the Sleep Research Center at the University of Chicago Medicine. “This could really help people trying to lose weight.”
The Expert’s Take:
“The results make perfect biological sense. When we’re sleep-deprived, our body produces more ghrelin (the hunger hormone) and less leptin (a hormone that makes you feel full). This probably stems from evolutionary science. In the prehistoric era, tiredness was a signal to our brains that we were in danger. Our sleep-deprived bodies were incentivised to pile on calories, in case we needed to sprint away from a saber-tooth tiger.
A sleep-deprived body also struggles to remove glucose from your circulating blood, studies show. In other words, tiredness doesn’t just make you hungrier – it also means the food you eat will make you fatter than if you ate the same food while you were well-rested.” - The Telegraph
Russell Foster, Ph.D. Elysium Scientific Advisory Board member, professor and chair of circadian neuroscience, director of the Sleep and Circadian Neuroscience Institute, and head of the Nuffield Laboratory of Ophthalmology at the University of Oxford
Contar a história da música em Porto Alegre é o nosso presente para a cidade nos seus 250 anos
Olá, querido leitor!
Março é o mês de aniversário da cidade que nos acolhe desde a criação da Arquipélago. Porto Alegre comemora 250 anos neste sábado, dia 26, e nós convidamos você a presentear a cidade de uma forma muito especial.
Porto Alegre: uma biografia musical é um presente para Porto Alegre em forma de livro. É um financiamento coletivo. É também o trabalho de uma vida para o músico e jornalista Arthur de Faria. As histórias que cobrem o período do início do povoamento da cidade até a Era do Rádio já foram escritas com maestria pelo Arthur, mas agora precisam de você para se transformarem em livro.
Para lançarmos o primeiro volume de Porto Alegre: uma biografia musical nós precisamos do seu apoio. Clique no botão para escolher a sua recompensa e ajude a contar essa história. Vem?
Assista ao vídeo de apresentação do Arthur de Faria para saber mais sobre o livro:
Arthur de Faria é músico, compositor e arranjador. Pela Arquipélago é autor de Elis: uma biografia musical. Produziu 27 discos, escreveu 35 trilhas para cinema e teatro, integra o Duo Deno, a Surdomundo Imposible Orchestra, o espetáculo Música de Cena e Música Menor – duo com o argentino Omar Giammarco. Por 20 anos liderou o Arthur de Faria & Seu Conjunto, com quem lançou cinco de seus oito discos e tocou em meia dúzia de países. Jornalista e mestre em Literatura Brasileira, ministra cursos sobre música popular brasileira no Brasil, Argentina e Uruguai, trabalhou por 20 anos em rádio, publicou dezenas de ensaios, artigos, livros e fascículos sobre música popular e dedica-se há mais de três décadas à pesquisa sobre a história da música de Porto Alegre.
(KATERYNA KON/SCIENCE PHOTO LIBRARY via Getty Images)
Multiple variants of SARS-CoV-2, the coronavirus causing the disease COVID-19, have emerged across the globe. At the moment, two lineages of the omicron variant and the delta variant are the only variants with significant global circulation, with omicron accounting for the vast majority of recent COVID-19 cases, according to a report from the World Health Organization released March 15, 2022. Omicron, also called B.1.1.529, was first reported in November 2021 in Botswana and South Africa, and now accounts for over 99% of coronavirus genome sequences from recent COVID-19 cases in the global database GISAID, according to the WHO report.
Here's a look at the science behind SARS-CoV-2 variants and which ones are the most concerning in different areas.
The reasons why sleep is so vital often hide in unexpected parts of the body, as host Steven Strogatz discovers in conversations with researchers Dragana Rogulja and Alex Keene.
A New Tool for Finding Dark Matter Digs Up Nothing
By THOMAS LEWTON
Physicists are devising clever new ways to exploit the extreme sensitivity of gravitational wave detectors like LIGO. But so far, they’ve seen no signs of exotica.
Quantum Magnetic Migration Birds navigate by “seeing” Earth’s magnetic field. Peter J. Hore writes for Scientific American about his research into the quantum effects occurring in a bird’s eye that enable this extra perception. Of course, quantum effects don’t usually survive in warm, open environments. But in 2016 Jennifer Ouellette wrote for Quanta about a theory that entanglement can protect quantum particles from decoherence even in classical environments like a bird’s eye.
Divine Distinctions Some researchers theorize that what sets humans apart as a species is our capacity for abstract ideas like geometry and religion, reports Siobhan Roberts for The New York Times. Emulating our talent for symbolic reasoning could be a necessary step toward building truly intelligent AI. In a 2021 interview for Quanta, John Pavlus spoke with Melanie Mitchell, a computer scientist who teaches AI to think with analogies.
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The Drama of Point d’Alençon Needle Lace
In its heyday, lace was beautiful, expensive, and handmade. Naturally, lace smuggling became the stuff of legend.
Point d'Alençon lace, as warn by Marie Antoinette in a portrait by Marie Louise Élisabeth
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