Women really do live longer than men. Here’s why.

It’s fairly obvious that women live longer than men on average. This pattern holds true across most countries and historical time periods. While that longevity gap between the sexes has narrowed a bit in some countries (but widened in others) due to improved living conditions and medical advances, it is not likely to disappear anytime soon, according to new research. The causes of this gap are deeply rooted in evolutionary history and can be observed in several other animal species, not just humans. Female mammals live on average 12 percent longer than males, with mating strategies playing an important role. The findings are detailed in a study published today in the journal Science Advances. XX vs. XY Across mammal species, from baboons and gorillas up to humans, females usually live longer than the males do. However, this pattern is not universal throughout the animal kingdom. Males are the longer-lived sex in several bird, insect, and reptile species.  One genetic explanation for this gap called the heterogametic sex hypothesis points to differences in sex chromosomes. Female mammals generally have two X chromosomes, while males only have one X and one Y chromosome, making them the heterogametic sex. Some research suggests that females might be protected from certain harmful genetic mutations because of the two X chromosomes. Although, females are the heterogametic sex in birds, with one Z and one W chromosome. To compare longevity in mammals and birds, the team on the study used records of 1,176 bird and mammal species in zoos around the world. They found a decrease in lifespan, which supports the heterogametic sex hypothesis and the idea that two X chromosomes could give a genetic advantage.  In mammals, the majority (72 percent) of females lived longer by 12 percent on an average. In most bird species (68 percent), males lived longer by an average of five percent overall. The study did find some interesting variations. “Some species showed the opposite of the expected pattern,” Johanna Stärk, a study co-author and evolutionary anthropologist at the Max Planck Institute for Evolutionary Anthropology in Germany, said in a statement. “For example, in many birds of prey, females are both larger and longer-lived than males. So sex chromosomes can only be part of the story.” It’s a male-eat-male world out there Reproductive strategies also played a role, not just genetics. Through sexual selection, males in particular develop ways to stick out among the crowd, including colorful plumage, mating dances, or unique vocalizations, which can increase reproductive success. However, these can shorten their lifespan.  The data from the study supports this assumption. In polygamous mammals with strong competition for mates, the males generally die earlier than females. By comparison, many birds are monogamous, so the competitive pressure is lower. This, in turn, appears to help them live longer. Overall, the longevity differences were smallest in monogamous species, while polygamy and pronounced size differences were associated with a greater advantage for females. Parenting also plays a role. The team found evidence that the sex that invests more time in raising offspring tends to live longer. For mammals, that is typically the females. In long-lived species such as primates, this is likely a selective advantage. If females survive until their offspring are independent or sexually mature, the species will ultimately be better off. The deep evolutionary roots One other long-standing theory is environmental pressures. Natural occurrences such as predation, pathogens, or harsh climates are thought to drive the longevity gaps between males and females.  To test this environmental theory, the team looked at zoo populations, where these kinds of pressures are largely absent. Even without predators or natural disasters, the lifespan gaps still persisted. Comparing the zoo and wild populations revealed that the gaps were often smaller in zoos, but rarely disappeared. This zoo comparison mirrors the human longevity situation, since advances in medicine and living conditions have narrowed, but not completely eliminated the lifespan gap. According to the team, these findings suggest that sex differences in lifespan are a deeply evolutionary process. It’s shaped by sexual selection and parental investment, while genetic differences in sex determination (like chromosomes) may also play a role. While environmental factors influence the extent of these differences, it does not completely eliminate them.  Ultimately, life expectancy between the sexes is not only a product of the environment we are raised in, but part of our evolutionary history–and will probably continue to exist.  The post Women really do live longer than men. Here’s why. appeared first on Popular Science.

Pure Science News
Women really do live longer than men. Here’s why.

It’s fairly obvious that women live longer than men on average. This pattern holds true across most countries and historical time periods. While that longevity gap between the sexes has narrowed a bit in some countries (but widened in others) due to improved living conditions and medical advances, it is not likely to disappear anytime soon, according to new research. The causes of this gap are deeply rooted in evolutionary history and can be observed in several other animal species, not just humans. Female mammals live on average 12 percent longer than males, with mating strategies playing an important role. The findings are detailed in a study published today in the journal Science Advances. XX vs. XY Across mammal species, from baboons and gorillas up to humans, females usually live longer than the males do. However, this pattern is not universal throughout the animal kingdom. Males are the longer-lived sex in several bird, insect, and reptile species.  One genetic explanation for this gap called the heterogametic sex hypothesis points to differences in sex chromosomes. Female mammals generally have two X chromosomes, while males only have one X and one Y chromosome, making them the heterogametic sex. Some research suggests that females might be protected from certain harmful genetic mutations because of the two X chromosomes. Although, females are the heterogametic sex in birds, with one Z and one W chromosome. To compare longevity in mammals and birds, the team on the study used records of 1,176 bird and mammal species in zoos around the world. They found a decrease in lifespan, which supports the heterogametic sex hypothesis and the idea that two X chromosomes could give a genetic advantage.  In mammals, the majority (72 percent) of females lived longer by 12 percent on an average. In most bird species (68 percent), males lived longer by an average of five percent overall. The study did find some interesting variations. “Some species showed the opposite of the expected pattern,” Johanna Stärk, a study co-author and evolutionary anthropologist at the Max Planck Institute for Evolutionary Anthropology in Germany, said in a statement. “For example, in many birds of prey, females are both larger and longer-lived than males. So sex chromosomes can only be part of the story.” It’s a male-eat-male world out there Reproductive strategies also played a role, not just genetics. Through sexual selection, males in particular develop ways to stick out among the crowd, including colorful plumage, mating dances, or unique vocalizations, which can increase reproductive success. However, these can shorten their lifespan.  The data from the study supports this assumption. In polygamous mammals with strong competition for mates, the males generally die earlier than females. By comparison, many birds are monogamous, so the competitive pressure is lower. This, in turn, appears to help them live longer. Overall, the longevity differences were smallest in monogamous species, while polygamy and pronounced size differences were associated with a greater advantage for females. Parenting also plays a role. The team found evidence that the sex that invests more time in raising offspring tends to live longer. For mammals, that is typically the females. In long-lived species such as primates, this is likely a selective advantage. If females survive until their offspring are independent or sexually mature, the species will ultimately be better off. The deep evolutionary roots One other long-standing theory is environmental pressures. Natural occurrences such as predation, pathogens, or harsh climates are thought to drive the longevity gaps between males and females.  To test this environmental theory, the team looked at zoo populations, where these kinds of pressures are largely absent. Even without predators or natural disasters, the lifespan gaps still persisted. Comparing the zoo and wild populations revealed that the gaps were often smaller in zoos, but rarely disappeared. This zoo comparison mirrors the human longevity situation, since advances in medicine and living conditions have narrowed, but not completely eliminated the lifespan gap. According to the team, these findings suggest that sex differences in lifespan are a deeply evolutionary process. It’s shaped by sexual selection and parental investment, while genetic differences in sex determination (like chromosomes) may also play a role. While environmental factors influence the extent of these differences, it does not completely eliminate them.  Ultimately, life expectancy between the sexes is not only a product of the environment we are raised in, but part of our evolutionary history–and will probably continue to exist.  The post Women really do live longer than men. Here’s why. appeared first on Popular Science.

Pure Science News
Evolution may explain why women live longer than men

In most mammals, females live longer than males, but in birds the trend goes the other way – a study of over 1000 species points to possible reasons for these differences

Pure Science News
Evolution may explain why women live longer than men

In most mammals, females live longer than males, but in birds the trend goes the other way – a study of over 1000 species points to possible reasons for these differences

Pure Science News
Evolution may explain why women live longer than men

In most mammals, females live longer than males, but in birds the trend goes the other way – a study of over 1000 species points to possible reasons for these differences

Pure Science News

The article examines how misperceptions of romantic interest develop from mid to late adolescence, showing that male overperception of female interest increases during the teen years while underperception patterns for females remain relatively stable. It highlights that the classic friend zone is rare among teenage girls and that misperception biases emerge and intensify across adolescence. The study uses data from Norwegian high school students to map how these biases shift from ages 16 to 19.

This topic is of interest to psychology readers because it illuminates the developmental emergence of social and romantic cognitive biases, illustrating how early patterns can evolve into adult interaction dynamics. It also underscores the role of communication, social learning, and gender differences in perceived intentions during adolescence.

Article Title: Girls rarely experience the “friend zone,” psychology study finds

Link to PsyPost Article: https://www dot psypost.org/girls-rarely-experience-the-friend-zone-psychology-study-finds/

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#psychology #adolescence #romanticmisperception #genderdifferences #socialcognition

Notable relevance for psychologists, social workers, and other mental health professionals: a large-scale Swedish study highlights potential under-detection of autism in girls during childhood. While diagnoses are higher for boys in early years, girls’ diagnoses rise through adolescence and reach parity by early adulthood. This pattern underscores the need for gender-sensitive screening and ongoing developmental monitoring within clinical and community settings.

Article Title: Everyone thought autism mostly affected boys. This study says otherwise

Link to Science Daily Mind-Brain News: https://ift dot tt/jwekyLa

#AutismAwareness
#GenderDifferences
#Neurodevelopment
#EarlyDetection
#PediatricMentalHealth

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There are differences in the anatomy of men and women, and medical procedures are often designed for male anatomy.

https://theconversation.com/routine-medical-procedures-can-feel-harder-for-women-heres-why-274041

#medicine #genderDifferences #WomensHealth

Routine medical procedures can feel harder for women – here’s why

When medical procedures are designed around male anatomy, women often pay the price – in pain, difficulty and dismissal.

The Conversation

An analysis of five years of data from United States Army Reserve and National Guard soldiers finds that PTSD symptom clusters differentially relate to hazardous drinking. Hyperarousal uniquely predicts higher alcohol consumption and more alcohol-related problems, particularly among male soldiers; avoidance and negative mood symptoms also link to greater problems, while re-experiencing shows no association. The link to alcohol dependence was not found for any symptom cluster.

By focusing on PTSD symptom clusters rather than a global score, the piece shows how specific distress patterns relate to drinking behavior, aligning with self-medication and reinforcement frameworks. It also highlights gender differences in coping, a central topic in psychology. The reservist population emphasizes the role of context in understanding mental health and substance use.

Article Title: Hyperarousal symptoms drive alcohol problems in male soldiers, new research suggest

Link to PsyPost Article: ift dot tt/txrIV1W

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#PTSD #Hyperarousal #AlcoholUse #MilitaryReservists #GenderDifferences

Sex Drive: 5 Surprising Facts from a 67k Person Study

What really drives sexual desire? We often rely on a handful of common assumptions about age, gender, and relationships to answer this question. But what happens when we peel back the layers and look at the science behind sex drive?

A groundbreaking study from the Estonian Biobank provides some of the clearest answers to date, challenging much of our conventional wisdom.

By analyzing data from over 67,000 participants (N = 67,334), researchers uncovered a complex tapestry of unseen forces shaping who wants sex and why. This article shares the most counter-intuitive findings from this massive study that are changing our understanding of human libido.

The Gender Gap in Desire is Wider and More Persistent Than we Thought

The first force this study brings into sharp focus is gender.

While it’s no secret that men, on average, report higher sex drive than women, this research revealed the difference to be exceptionally large and consistent across the lifespan.

In fact, the effect size found was even larger than those documented in previous large-scale meta-analyses. η² = 0.18, a large effect size indicating that gender alone explained a substantial 18% of the difference in desire.

This robust finding underscores just how profound and persistent the influence of gender is on libido. The study’s authors highlight the sheer magnitude of this difference across different life stages:

“Even the peak of average woman’s sexual desire at ages around 20 to 30 remains lower than men’s average levels across much of adulthood. It is only after the age of 60 + that men’s declining sexual desire falls below the highest levels ever reported by women.”

Furthermore, the research showed that this gap in desire actually widens with age, reaching its peak in the 60+ age group.

Men’s Sex Drive Peaks Surprisingly Late

We’re often told that a man’s sex drive is like a rocket. Supposedly peaking in his late teens and slowly coming down.

This study, however, suggests it’s more of a long climb to a high plateau.

Contrary to popular belief, men’s sexual desire actually peaked around their late 30s to early 40s. This finding was particularly surprising because it runs counter to what we know about male biology.

The researchers noted the unexpected nature of this pattern:

“A noteworthy finding was that men’s sexual desire peaked around the age of 40, exceeding even early adulthood levels… This pattern is surprising because it does not align with the well-documented trajectory of testosterone decline…”

This suggests that factors beyond simple biology are at play.

The researchers propose that men in this age group “are more likely to be in stable long-term relationships, which have been associated with increased sexual activity and emotional intimacy.”

In another fascinating hypothesis, they suggest that as men get older, their “levels of desire may be starting to adapt to their partner’s declining levels of desire,” which could help explain the drop-off in later life.

Licensed Professional Counselors, do you need continuing education hours?

Look no further!

If you find this article interesting, Dr. Weeks’ course Sexual Education and Porn Use in Women, and her other unique courses, will engage and educate!

Parenthood Affects Men and Women’s Desire in Opposite Ways

One of the most fascinating unseen forces revealed by the study was how parenthood impacts libido differently for men and women.

For men, having more children was consistently associated with higher sexual desire. This effect grew stronger with each additional child, with the largest positive association found in fathers with five children. β = 0.43, indicating a strong positive association between fatherhood of five children and higher desire compared to mothers.

This stands in stark contrast to the experience of women, where the demands of parenthood are frequently linked to a decline in desire. A trend also suggested by the study’s data.

The researchers speculate that this opposing effect may reflect:

“…gendered differences in parental roles, stress levels, time availability, and energy investment within a family.”

They also offer a thought-provoking alternative explanation: it’s possible that “higher levels of desire may contribute to men having more children” in the first place, showing the complex relationship between cause and effect.

Single People May Actually Have a Higher Sex Drive

It’s often assumed that being in a committed relationship is the key to a healthy sex drive.

At first glance, the data seemed to support this, showing that partnered people had slightly higher desire on average. But when the researchers used a more powerful statistical lens, controlling for factors like age and gender, the picture flipped.

Partnered individuals actually reported lower sexual desire compared to their single counterparts. β = −0.10, a small but statistically significant effect suggesting that, all else being equal, being in a relationship was linked to a slight decrease in desire.

This surprising result challenges the idea that a relationship automatically sustains high desire. The study’s authors suggest this could be related to habituation in long-term partnerships, a phenomenon that “particularly for women, points to the potential for habituation and shifts in relational dynamics over time.”

In other words, the comfort of a long-term relationship may sometimes come at the expense of novelty.

Are you a professional looking to stay up-to-date with the latest information on, sex addiction, trauma, and mental health news and research? Or maybe you’re looking for continuing education courses?

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Your Career Choice Could Be Linked to Your Libido

In perhaps the most novel finding, the study uncovered a remarkable link between a person’s occupation and their level of sexual desire. Simple averages suggested that people in manual-labor and military jobs had the highest libido, but the researchers quickly noted this was likely because those fields are dominated by younger men.

The real story emerged after controlling for factors like age and gender. The study then compared all occupations to a baseline group: senior managers. The results were clear:

  • Lower Desire Occupations (Compared to Senior Managers): After accounting for other factors, nearly every other occupation was linked to significantly lower sexual desire. This effect was especially strong for elementary workers (β = -0.27), skilled workers and craftsmen (β = -0.19), and office and customer service workers (β = -0.16).

This highlights the often-overlooked connection between our professional lives, daily stress, and our personal well-being. It suggests that the pressures and routines of our jobs can be a powerful, hidden influence on our libido.

Conclusion: Rethinking What We Know About Sex Drive

This research paints a new picture where desire isn’t just a biological switch. It’s a dynamic outcome of a person’s age, gender, parental role, relationship status, and even their career.

The fact that these demographic and life factors alone could explain nearly 30% of the variance in sexual desire underscores just how profoundly they shape this fundamental human experience.

As we learn more about the complex web of factors that shape our desires, how might we change the conversations we have about sexuality in our own relationships?

Drop your thoughts in the comments.

For an in-depth guide on talking to your adolescents about cybersex and pornography, check out Dr. Jen’s book. Amazon | BookBaby

Do you feel your sexual behavior, or that of someone you love, is out of control? Then you should consult with a professional.

Are you looking for more reputable data-backed information on sexual addiction? The Mitigation Aide Research Archive is an excellent source for executive summaries of research studies.

The Study

Below is the study this post was based on for those who’d like to further explore these revelations about Sex Drive.

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