Understanding the Mystery of Rising Women’s Body Temperature from Ages 18 to 42

Understanding Women's Body Temperature Changes

Although hot flashes are linked to menopause, studies indicate women experience a gradual increase in body temperature from early adulthood through midlife.

Dmitry Marchenko/Alamy

A woman’s resting body temperature gradually increases year-by-year from age 18 to 42, though the exact reasons remain uncertain. This finding suggests potential applications for temperature-sensing wearables to monitor aging, peri-menopause, and related health conditions.

“Temperature signals may hold critical insights about health,” says Marie Gombert-Labedens from SRI International, a California-based research institute. “Our aim is to stimulate further studies to uncover new health markers that could provide unexplored health insights.”

In their 1990s study, researchers investigated over 750 women aged 18 to 42 who recorded their oral or rectal temperature daily upon waking.

The results revealed that participants typically had lower body temperatures during the first half of their menstrual cycle and higher temperatures in the second half around ovulation. Many fertility tracking apps capitalize on this temperature spike to help identify a user’s fertile window.

The research team further analyzed the data to assess the impact of age on body temperature across different menstrual phases. They discovered an average yearly temperature rise from ages 18 to 42. Consequently, women over 35 recorded temperatures approximately 0.05°C higher than their younger peers throughout both halves of their cycles.

This suggests that the skin temperature monitored by smart rings indicates women aged 42 to 55 are generally warmer than those between 18 and 35.

Although more studies are necessary to clarify the reasons behind this temperature increase, Gombert-Labedens suggests it may be linked to hormonal shifts as women approach their reproductive twilight years. As perimenopause starts, body temperature may surge, causing hot flashes and night sweats, but the underlying mechanisms remain unclear.

The initial study only included women not on hormonal contraception and without hormonal disorders like PMOS (previously termed PCOS), leaving unknown factors that could influence body temperature changes over time.

Previous research indicates that post-menopause, women’s body temperatures often rise, although they tend to return to more stable levels similar to men’s. Enduring lower temperature levels and alignment with male averages.

Gombert-Labedens noted that the midlife increase in temperature may account for why some women report feeling warmer than their younger selves. “We hypothesize that higher body temperatures in middle-aged women could alter their thermal perception and reactions to the environment,” she adds.

With the rise of smart rings and temperature-sensing devices, identifying individual temperature variations could help predict approaching menopause, assess biological aging rates, and uncover early signs of ovarian cancer among other conditions, says Gombert-Labedens.

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Source: www.newscientist.com

Understanding Why Women’s Body Temperature Increases from Ages 18 to 42

Source: www.newscientist.com

The Surprising Reasons Women Experience Increased Attraction from Ages 18 to 42

Although hot flashes are linked to menopause, research indicates that women gradually experience a rise in body temperature from early adulthood through middle age.

Dmitry Marchenko/Alamy

A fascinating study reveals that a woman’s resting body temperature incrementally increases each year from age 18 to 42. The underlying reasons for this phenomenon remain largely unexplored, paving the way for innovative solutions like temperature-sensing wearables to monitor aging and detect perimenopause alongside other health issues.

According to Marie Gombert-Labedens from SRI International, a renowned research institute in California, “We believe temperature signals provide substantial insights into health.” She hopes this research will uncover new health markers that could serve as invaluable tools for maintaining our well-being.

In studies from the 1990s, over 750 women aged 18 to 42 tracked their oral or rectal temperatures daily upon waking. Findings indicated that women generally recorded lower body temperatures during the first half of their menstrual cycle, rising during ovulation. This temperature shift is frequently utilized by fertility tracking applications to determine fertile phases.

Upon further analyzing this data, Gombert-Labedens and her team discovered a slight annual increase in body temperature correlated with age, noting that women over 35 had temperatures about 0.05°C higher than their younger counterparts during both phases of the menstrual cycle.


This data suggests that continuous finger skin temperature monitoring via smart rings shows women aged 42 to 55 are, on average, warmer than those aged 18 to 35.

While more research is needed to elucidate this temperature increase, it may be linked to hormonal changes, particularly leading into the later reproductive years. The onset of perimenopause accompanies a rapid rise in body temperature, commonly resulting in hot flashes and night sweats, although the exact mechanisms still require clarification.

The study focused on women who were not utilizing hormonal contraception and did not have hormonal disorders, such as polycystic ovary syndrome (PCOS), leaving questions about how these elements might influence long-term body temperature changes.

Further investigation has shown that after menopause, women’s body temperatures generally return to lower levels, similar to men’s. This shift can normalize temperature dynamics among genders.

Gombert-Labedens posits that the increase in body temperature around midlife may offer insights into why some women report feeling warmer as they age. “We speculate that the elevated body temperatures in middle-aged women could alter their sensitivity and reactions to environmental temperatures,” she states.

As advanced temperature-sensing devices and smart rings become integral in health monitoring, they could potentially reveal crucial patterns and anomalies in individual temperature trends, signaling the approach of menopause, estimating biological aging rates, and even detecting early signs of conditions like ovarian cancer, according to Gombert-Labedens.

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Source: www.newscientist.com

New Study Reveals Ancient Earth Experienced Repeated Melting Events During Catastrophic Ice Ages

During the Neoproterozoic Era (1 billion to 538.8 million years ago), Earth underwent dramatic climate fluctuations, notably the Sturtian Ice Age, where ice is believed to have enveloped the planet. Understanding the geological record and the survival of life during this pivotal event has remained a significant challenge. Geochronological studies indicate that the Sturtian Ice Age persisted for an astonishing 56 million years, far exceeding predictions made by conventional climate models. A recent study from Harvard University proposes that Earth may have experienced cycles of ice-covered and ice-free states during the Sturtian period.

Artist’s impression of ‘Snowball Earth’. Image credit: Oleg Kuznetsov, http://3depix.com/ CC BY-SA 4.0.

“The global glaciation that occurred near the advent of animal life, known as the Neoproterozoic Snowball Earth event, represents one of the most severe climate transformations in Earth’s history and likely had profound effects on biological evolution,” stated Charlotte Minsky, a Harvard graduate student, along with her research team.

“However, the causes, severity, and ecological impacts of these glaciations continue to be the subject of intense debate.”

Employing a coupled model of ancient climate systems and the global carbon cycle, researchers propose that Earth was not trapped in a singular, incessant snowball state.

Their simulations indicate that extensive weathering of basalt in the Franklin Igneous Province, a significant volcanic area in northern Canada that likely erupted prior to the Sturtian Ice Age, dramatically reduced atmospheric carbon dioxide levels, leading to multiple global ice ages.

As volcanic activity and other processes gradually rebuilt atmospheric carbon dioxide, global temperatures rose, ice melted, and previously covered basalt regions were exposed once more.

This renewed decomposition through weathering replenished carbon dioxide, triggering another snowball cycle.

The authors contend that this recurring cycle of freezing and thawing driven by carbon dioxide could sustain glacial and interglacial variations for tens of millions of years.

The mechanisms revealed in this study address several longstanding discrepancies, particularly the duration of the Sturtian Ice Age, which was previously challenging to reconcile with established climate models.

This research aligns with sedimentation patterns from that era, elucidating how atmospheric oxygen levels could remain stable amidst extreme climatic shifts.

Moreover, frequent returns to warmer, ice-free states may have been critical in preventing a total collapse of atmospheric oxygen.

“This discovery may elucidate how aerobic life continued to thrive throughout such severe intervals,” Minsky noted.

For more details, refer to the study published in Proceedings of the National Academy of Sciences.

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Charlotte Minsky et al. 2026. The snowball greenhouse cycle repeats within Neoproterozoic Sturtian glaciers. PNAS 123 (19): e2525919123; doi: 10.1073/pnas.2525919123

Source: www.sci.news

Inspiring Space Images: Captivating Visuals That Have Sparked Curiosity Through the Ages

James Webb Space Telescope Star Shade Prototype

Craig Cutler

Thames & Hudson

Space, the vast emptiness that captivates our imagination, has inspired an enduring fascination. In his compelling book, Space Journal: Art, Science, and Space Exploration, presenter Dallas Campbell curates iconic imagery that highlights the wonders of space exploration alongside intriguing details.

Among the most captivating visuals featured in Space Journal are recreations from a time when humanity’s understanding of the universe was limited, filled instead with imaginative guesses. A striking example includes a Belgian cover from H.G. Wells’ Space War from 1906, depicted below with a plundering tripod.

From H.G. Wells, La guerre des mondes (Brussels: L. Vandamme & Co., 1906)

However, astronomers began to expand their knowledge base shortly after. Around 1897, a pioneering telescope financed by industrialist Percival Lowell marked a significant breakthrough in observational astronomy, depicted below.

Percival Lowell Observing Through the Clark Telescope, Circa 1897

Courtesy of Lowell Observatory Archives, Flagstaff, Arizona.

Recently, the remarkable James Webb Space Telescope made headlines for its innovative design, which features intricate origami-style folding necessary for its launch—a prototype is displayed in the opening image.

Born just after NASA’s Apollo missions reshaped our understanding of the moon and space, Campbell embodying the impact of those journeys and the indelible marks astronauts left on the lunar surface.

View of the Moon

JSC/NASA

“On Earth, footprints may fossilize in rock or wash away quickly. However, on the Moon, they remain for eternity,” Campbell reflects. “The Sea of Tranquility harbors no current to erase them — these are the remnants of humanity’s first migration from Earth to another celestial body.”

Astronomy and Culture Along the Silk Road: Uzbekistan

Embark on an enthralling journey through Uzbekistan’s astronomical heritage, where rich scientific contributions and breathtaking landscapes intersect. Discover how astronomy influenced cultural exchanges along the Silk Road, linking Eurasia and beyond.

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Source: www.newscientist.com

An Enchanting Artistic Representation of Marine Life Through the Ages

Strawberry squid, color lithograph

Smithsonian Library, Washington, DC

The world’s oceans, covering one-tenth of Earth’s surface, are the cradle of life, showcasing an astonishing variety of creatures with diverse shapes, colors, and evolutionary traits.

‘Pilchard (Argentina Carolina)’, hand-colored engraving from Mark Catesby

National Agricultural Library, Beltsville, Maryland

Marine biologist Helen Scale’s latest book, Ocean Art: From the Coast to the Deep, takes readers through 140 stunning photographs and illustrations of underwater vistas and their diverse inhabitants.

Yashima Gakutei, three crabs on the edge of the water

The Met Museum

The realm of art mirrors the diversity of marine life, and Scale expertly intertwines insights about artists with the wonders of oceanic life, blending marine biology with art history.

Cyphonophore (Forscaliatrod), illustration

Library, Woods Hole, MA

“It’s captivating to view the ocean through the perspectives of artists and craftsmen,” Scale noted. “They brilliantly convey the essence of life beneath the surface.”

Mycenaean stirrup vessel featuring an octopus, circa 1200 to 1100 BC

The Met Museum

Throughout history, culture has shown a deep fascination with marine life. The featured artworks include a lithograph of the Strawberry squid (Histioteuthis heteroopsis) from 1851, Catesby’s hand-colored sculpture of the Pilchard (Argentine Carolina) from 1743, a 1830 woodblock print from Japan showing crabs, an 1888 illustration of a siphonophore (Forskalia tholoides), and a Mycenaean jar illustrating an octopus from around 1200 to 1100 BC. Additional ceramic artifacts include lobster-shaped containers from Peru and crabs depicted in Nazca ceramic bowls from the 2nd to 4th centuries.

L: (Peru) “Lobster-shaped Stirrup Vessel”, R: Crab Ceramic Bowl

Left; Walters Art Museum. Right; The Met Museum

Ocean Art is scheduled for release in the UK on August 1st and in the US on September 26th.

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Source: www.newscientist.com

UK Border Officials Utilize AI to Assess Ages of Child Asylum Seekers

Officials will employ artificial intelligence to assist in estimating the age of asylum seekers who claim to be minors.

Immigration Minister Angela Eagle stated on Tuesday that the government will pilot technology designed to assess a person’s age based on facial characteristics.

This initiative is the latest effort aimed at helping the Labor Minister leverage AI to address public service issues without incurring significant expenses.

The announcement coincided with the public release of a report by David Bolt, the Chief Inspector of Borders and Immigration. A crucial report indicated efforts to estimate the age of new arrivals.

Eagle mentioned in a formal statement to Parliament: “We believe the most economically feasible approach is likely to involve estimating age based on facial analysis. This technology can provide age estimates with known accuracy for individuals whose age is disputed or uncertain, drawing from millions of verifiable images.”

“In cases where it’s ambiguous whether the individual undergoing age assessment is over 18 or not claiming to be a minor, facial age estimation offers a potentially swift and straightforward method to validate judgments against the technology’s estimates.”

Eagle is launching a pilot program to evaluate the technology, aiming for its integration into official age verification processes by next year.

John Lewis announced earlier this year that it will be the first UK retailer to facilitate online knife sales using facial age estimation technology.

The Home Office has previously utilized AI in other sectors, such as identifying fraudulent marriages. However, this tool has faced criticism for disproportionately targeting specific nationalities.

Although there are concerns that AI tools may intensify biases in governmental decision-making, the minister is exploring additional applications. Science and Technology Secretary Peter Kyle announced a partnership with OpenAI, the organization behind ChatGPT, to investigate AI deployment in areas like justice, safety, and education.

Bolt expressed that the mental health of young asylum seekers has deteriorated due to failings in the age verification system, especially in Dover, where the influx of small boats is processed.

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“Many concerns raised over the past decade regarding policy and practices remain unresolved,” Bolt cautioned, emphasizing that the challenging conditions at the Dover processing facility could hinder accurate age assessments.

He added: “I have heard accounts of young individuals who felt distrustful and disheartened in their encounters with Home Office officials, where hope has faded and their mental well-being is suffering.”

His remarks echo a report from the Refugee Council, indicating that at least 1,300 children have been mistakenly identified as adults over an 18-month period.

Last month, scholars from the London School of Economics and the University of Bedfordshire suggested that the Home Office should be stripped of its authority to make decisions regarding lonely asylum seekers.

Source: www.theguardian.com

DOOM: The Dark Ages Review – ID Software Takes a Medieval Twist with a Bold Redefinition of Shooter Gameplay

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Built as a reimagining of id Software’s 2016 “Doom Eternal,” “Dark Ages” diverges significantly while still echoing the essence of its lineage. Whereas the 2020 iteration focused on speed and evasion, “Dark Ages” emphasizes a staunch, grounded approach. If the previous game revolved around eliminating foes one at a time, this installment empowers players to obliterate hordes of demons simultaneously. The frantic, rapid-fire nature of “Eternal” gives way to a brute force mentality in “Dark Ages,” where smashing through enemies becomes the primary strategy. The essence of ripping and tearing is still prevalent, with an emphasis on raw power.

At the heart of “Dark Ages” lies a combat system reminiscent of the original 1993 game, drawing inspiration from slowly launched projectiles from iconic enemies like Imps, Kakodemons, and Hell Knights. This new chapter intensifies those encounters, featuring an array of foes that hurl fireballs, floating orbs, and energy barriers, all while straying from the traditional two-dimensional arena.




The interdimensional battlefield shimmers with energy.
Photo: ID Software

Players must navigate these new challenges as they control slower, heftier slayers of doom. Shields play a crucial defensive role against various projectiles, not only blocking attacks but also reflecting some back at their origin. Successfully countering projectile attacks catches opponents off guard and opens them up for “glorious kills.” Although brutal, these maneuvers are generally less intricate than in earlier games, often reduced to straightforward punches and kicks.

While many demons follow easily recognizable attack patterns, the most formidable adversaries engage in fierce close-range duels. These confrontations occur within expansive arenas, where smaller foes swarm around larger ones, often shielded by rows of undead minions. ID Software has introduced several innovative weapons to tackle these hellish legions, including railroad spike launchers that absorb demons and shotguns that deliver devastating close-quarter firepower.




The scale is remarkable.
Photo: ID Software

This captivating reformulation of core combat mechanics provides as much enjoyment in mastering its rhythm as it does in witnessing its destructive consequences. However, the slower pace and limited toolset may not evoke the same adrenaline rush at its peak as previous entries.

This slower pacing is amplified by the expansive design of “Dark Ages.” With 22 levels that are often open-ended, players can choose their battles and discover secrets in their preferred order. Yet, despite the impressive scale, the traversal can become monotonous, resulting in a feeling that the game may not fully capitalize on its combat potential.

ID Software tries to counteract the slow tempo by incorporating diverse gameplay mechanics. Certain maps allow players to pilot a massive mech named Atlan, delivering impactful punches to colossal demons, while others introduce aerial maneuvers atop dragons. While these elements bring novelty, they tend to lack significant depth, recalling the mandatory vehicle sections prevalent in early 2000s shooters.

Nonetheless, I appreciate the experimental nature of “Dark Ages.” The developers seem committed to exploring new directions, striving not to rely solely on past successes like some other franchises. Their goal appears to be redefining shooter mechanics with every new release. While “Dark Ages” may not reach the heights of previous ID Software titles, it remains a well-crafted and thoughtfully designed shooter that delivers heavy hitting moments.

“DOOM: The Dark Ages” is set to launch on May 15th, priced at £70.

Source: www.theguardian.com