Loss of muscle mass and a slower metabolism are just some of the physical changes caused by the menopause.
Many women begin experiencing symptoms of the menopause around age 50. As hormones begin to fluctuate and change, women might start experiencing a range of symptoms, such as hot flushes, joint pain, low mood and vaginal dryness. The menopause can also be accompanied by a range of physical changes too – including loss of muscle mass, loss of bone density and a slowed metabolism.
Fortunately, regular exercise – specifically weightlifting – can help mitigate these changes somewhat and improve overall health and wellbeing. Here are just some of the ways weightlifting can be beneficial to women going through the menopause.
The way we see and describe hues varies widely for many reasons: from our individual eye structure, to how our brain processes images, to what language we speak, or even if we live near a body of water
What color is a tree, or the sky, or a sunset? At first glance, the answers seem obvious. But it turns out there is plenty of variation in how people see the world — both between individuals and between different cultural groups.
A lot of factors feed into how people perceive and talk about color, from the biology of our eyes to how our brains process that information, to the words our languages use to talk about color categories. There’s plenty of room for differences, all along the way.
Some neuroscientists think psychedelic drugs and the hallucinations they induce could help reveal how the brain generates our perceptions of the world around us — and of ourselves.
“Everything became imbued with a sense of vitality and life and vividness. If I picked up a pebble from the beach, it would move. It would glisten and gleam and sparkle and be absolutely captivating,” says neuroscientist Anil Seth. “Somebody looking at me would see me staring at a stone for hours.”
Or what seemed like hours to Seth. A researcher at the UK’s University of Sussex, he studies how the brain helps us perceive the world within and without, and is intrigued by what psychedelics such as LSD can tell us about how the brain creates these perceptions. So a few years ago, he decided to try some, in controlled doses and with trusted people by his side. He had a notebook to keep track of his experiences. “I didn’t write very much in the notebook,” he says, laughing.
Religion is a human universal. For thousands of years, humans have held religious beliefs and participated in religious rituals. Throughout history, every human society has featured some kind of supernatural or religious belief.
Why is religion so prevalent? One reason is that it’s a powerful tool for explanation.
The world is a mysterious place, and was even more mysterious before the rise of modern science. Religion can be a way of making sense of this mystery. This idea dates back to theologians and philosophers such as Henry Drummond and Friedrich Nietzsche, who both supported the “God of the gaps” hypothesis, wherein divine intervention by God is used to explain gaps in scientific knowledge.
A machine can only “do whatever we know how to order it to perform,” wrote the 19th-century computing pioneer Ada Lovelace. This reassuring statement was made in relation to Charles Babbage’s description of the first mechanical computer.
Lady Lovelace could not have known that in 2016, a program called AlphaGo, designed to play and improve at the board game “Go”, would not only be able to defeat all of its creators, but would do it in ways that they could not explain.
In 2023, the AI chatbot ChatGPT is taking this to another level, holding conversations in multiple languages, solving riddles and even passing legal and medical exams. Our machines are now able to do things that we, their makers, do not know “how to order them to do”.
Stadiile incipiente ale menopauzei afectează sănătatea cerebrală. Iată care sunt efectele și ce se poate face. Un articol recent publicat în Nature de Heidi Ledford vorbește de stadiul cercetărilor în ce privește menopauza, care sunt simptomele, riscurile și posibile soluții pentru combaterea acestora.
The chances that a newborn survives childhood have increased from 50% to 96% globally. This article asks how we know about the mortality of children in the past and what we can learn from it for our future.
A child dying is one of the most dreadful tragedies one can imagine. We all know that child deaths were more common in the past. But how common? How do we know? And what can we learn from our history?
Archeologists and historians have brought together data from many places and time periods across the world which lets us piece together a picture of our past.
Like most people I check my emails in the morning, wading through a combination of work requests, spam and news alerts peppering my inbox.
But yesterday brought something different and deeply disturbing. I noticed an alert from the American Cybersecurity and Infrastructure Security Agency (CISA) about some very devious malware that had infected a network of computers.
The malware in question is Snake, a cyber espionage tool deployed by Russia’s Federal Security Service that has been around for about 20 years.
According to CISA, the Snake implant is the “most sophisticated cyber espionage tool designed and used by Center 16 of Russia’s Federal Security Service for long-term intelligence collection on sensitive targets”.
If you know anything about the experiences of animals reared in captivity for food, fur or human amusement, you might imagine that the lives of wild animals are idyllic. If nature is conceived as a sort of Garden of Eden then animals which live in it, free of human interference, are presumably living their best possible lives.
Others see life in the wild as far harsher. Nature is “red in tooth and claw” as poet Alfred Tennyson once put it. According to this view, the average life of a wild animal can be best understood as a desperate search for food and shelter, enduring pain and sickness and burdened with the ever-present prospect of a savage death.
This latter view is arguably dominant among those who ponder questions of wild animal ethics and welfare. Scholars like Yew-Kwang Ng and Oscar Horta have aimed in part to debunk the view that wild animals have it pretty good by evoking the prevalence of vicious predators and other sources of harm. Yet this picture may be just as inaccurate.
In our recent paper, we argued that the real experience of wild animal life most likely sits somewhere between these two extremes – though it’s probably a lot better than many researchers think.
The popular view of wild animals being consumed by suffering has been influenced by a preoccupation with their experiences at the time of their deaths. Too little attention has been paid to the range of positive experiences available to wild animals throughout their lives.
Detalii
de: Heather Browning, University of Southampton and Walter Veit, University of Bristol
Creierul este responsabil pentru controlul majorității activităților corpului. Capacitățile sale de procesare a informațiilor sunt cele care ne permit să învățăm și este depozitul central al amintirilor. Dar cum se formează amintirile și unde sunt localizate în creier?
Deși neurologii au identificat diferite regiuni ale creierului în care sunt stocate amintirile, cum ar fi hipocampul, situat în mijlocul creierului, neocortexul din stratul superior al creierului și cerebelul de la baza craniului, încă nu au fost identificate structuri moleculare specifice din acele zone, implicate în formarea amintirilor și învățare.
Detalii
de: John Katsaras, Charles Patrick Collier și Dima Bolmatov
Celulele stem melanocitare, spre deosebire de alte tipuri de celule stem, au o evoluţie ciclică: se transformă în melanocite mature, care apoi parcurg în sens opus procesul de diferenţiere şi devin din nou celule stem. Odată cu înaintarea în vârstă, acumularea celulelor stem melanocitare într-un compartiment al foliculului pilos diferit de cel germinativ determină „blocarea” lor la acest nivel, unde lipsesc semnale necesare pentru a relua intrarea în ciclul de diferențiere / dediferenţiere. Astfel, nu mai sunt suficiente celule stem care au capacitatea să se diferenţieze în melanocite şi să producă pigment, rezultând albirea părului.
Cercetători de la Universitatea Texas au publicat recent un articol în Nature Neuroscience, în care arată cum, folosind inteligența artificială (IA), au putut translata gândurile subiecților umani în text, analizând date colectate prin scanare de tip fMRI (functional Magnetic Resonance Imaging), care măsoară fluxul de sânge în diverse regiuni ale creierului.
Experimentul a implicat colectarea datelor de la trei participanți la studiu, care au însumat 16 ore de ascultare a unor narațiuni de către fiecare din cei trei, date care au fost utilizate pentru a „antrena” softul pe bază de IA.
On Nov. 27, 2022, Mauna Loa – the world’s largest active volcano – erupted on the island of Hawaii. For days, fountains of lava, boiling at more than 2,000 degrees Fahrenheit (1,100 degrees Celsius), spewed upward and flowed down the mountain’s sides.
For tens of millions of people around the world, the videos were a mesmerizing sight. Then, a few weeks later, the eruption ended. Fortunately, there were no known deaths, and no major property damage.
Un nou studiu de asociere la nivelul întregului genom (genome-wide association study, GWAS), realizat de Universitatea McGill, a identificat diferențe între profilul genetic al femeilor și cel al bărbaților în ce privește riscul de tulburare depresivă majoră.
Există diferențe marcante între femei și bărbați legate de prevalența, manifestările clinice și răspunsul la tratament pentru tulburarea depresivă majoră. Afecțiunea psihică este mai frecventă la femei, fiind de două ori mai probabil ca acestea să primească un diagnostic de depresie comparativ cu bărbații.
• „Principele” de Nicolò Machiavelli(finalizată: 3☆/5) • „Zorii tuturor lucrurilor. O nouă istorie a omenirii”de D. Graeber și D. Wengrow(finalizată:5☆/5) •„Elefantul din creier” de Kevin Simler și Robin Hanson(fără note:3☆/5) •„Trebuie să-ți schimbi viața” de Peter Sloterdijk(fără note:4☆/5) •„Apeirogon” de Colum McCann(fără note:5☆/5)
