Grazyna Jasienska
@grazynajasienska.bsky.social
Human reproductive ecology, evolutionary public health and wild gardens fanatic.
Make love not war
New Paper: Ornaments evolve faster than weapons
Combining a new theoretical model of sexually selected trait evolution with comparative analyses across ten clades, we suggest that drift in female preferences accelerates the rate of ornament evolution.
royalsocietypublishing.org/rspb/article...
Combining a new theoretical model of sexually selected trait evolution with comparative analyses across ten clades, we suggest that drift in female preferences accelerates the rate of ornament evolution.
royalsocietypublishing.org/rspb/article...
Ornaments evolve faster than weapons
Abstract. We investigate the evolutionary dynamics of sexually selected traits using both a mathematical model and comparative analyses, focusing on the re
royalsocietypublishing.org
August 20, 2026 at 10:58 AM
Make love not war
Reposted by Grazyna Jasienska
My book's official pub date is August 25 but someone told me they just got a shipping notification from Bookshop 👀👀👀
Pregnancy Interrupted: The Science and Stories of How Pregnancies Really End
A compassionate, evidence-based look at pregnancy loss--how and why it happens, and why the assurances of the medical industry don't reflect the reality One of the most prevalent myths about human pre...
bookshop.org
August 1, 2026 at 9:21 PM
My book's official pub date is August 25 but someone told me they just got a shipping notification from Bookshop 👀👀👀
A Nobel laureate’s assist to women’s basketball pros current.fas.harvard.edu/stories/nobe...
A Nobel laureate’s assist to women’s basketball pros
In March 2026, the union representing professional women's basketball players reached a historic collective bargaining agreement with the WNBA, securing salary increases of nearly 400 percent for its ...
current.fas.harvard.edu
July 2, 2026 at 12:06 PM
A Nobel laureate’s assist to women’s basketball pros current.fas.harvard.edu/stories/nobe...
Reposted by Grazyna Jasienska
We are pleased to share that preparations are already underway for the next #PTNCE #conference, which will take place in #Kraków in September 2027! We look forward to bringing our community together again to exchange ideas, foster collaboration, and strengthen research on human evolutionary studies.
June 16, 2026 at 11:56 AM
We are pleased to share that preparations are already underway for the next #PTNCE #conference, which will take place in #Kraków in September 2027! We look forward to bringing our community together again to exchange ideas, foster collaboration, and strengthen research on human evolutionary studies.
„Zagadka estrobolomu: Mikrobiologiczna inżynieria metabolizmu estrogenu człowieka” - Praca na stanowisku post-doc. 3 lata. Fascynujący projekt, świetny zespół. Uniwersytet Jagielloński. Zgłoszenia do końca czerwca.
nauka.cm-uj.krakow.pl/ofertypracy/...
Praca to nie wszystko. To też jest Kraków.
nauka.cm-uj.krakow.pl/ofertypracy/...
Praca to nie wszystko. To też jest Kraków.
June 12, 2026 at 11:16 AM
„Zagadka estrobolomu: Mikrobiologiczna inżynieria metabolizmu estrogenu człowieka” - Praca na stanowisku post-doc. 3 lata. Fascynujący projekt, świetny zespół. Uniwersytet Jagielloński. Zgłoszenia do końca czerwca.
nauka.cm-uj.krakow.pl/ofertypracy/...
Praca to nie wszystko. To też jest Kraków.
nauka.cm-uj.krakow.pl/ofertypracy/...
Praca to nie wszystko. To też jest Kraków.
Our new paper in PNAS. Gut microbes can recycle estrogens. Industrialized populations have greater microbial capacity for estrogen recycling than nonindustrialized populations. www.pnas.org/doi/10.1073/...
Industrialization increases the estrogen-recycling capacity of the gut microbiome | PNAS
Estrogens influence many aspects of human physiology and health, including fertility,
growth, metabolic function, and susceptibility to disease. Up...
www.pnas.org
April 17, 2026 at 2:01 PM
Our new paper in PNAS. Gut microbes can recycle estrogens. Industrialized populations have greater microbial capacity for estrogen recycling than nonindustrialized populations. www.pnas.org/doi/10.1073/...
Reposted by Grazyna Jasienska
Read Industrialized populations show greater capacity for estrogen recycling by gut microbes on Kudos: www.growkudos.com/publications... @yalereproeco.bsky.social @grazynajasienska.bsky.social
Industrialized populations show greater capacity for estrogen recycling by gut microbes
The human gut microbiome includes bacteria that can influence how hormones are processed in the body. One important function is the recycling of estrogens: instead of being fully excreted, some estrog...
www.growkudos.com
April 17, 2026 at 1:09 PM
Read Industrialized populations show greater capacity for estrogen recycling by gut microbes on Kudos: www.growkudos.com/publications... @yalereproeco.bsky.social @grazynajasienska.bsky.social
Reposted by Grazyna Jasienska
As new Editor in Chief of Evolution, Medicine, and Public Health, an OA society journal of ISEMPH, we welcome papers at the interface of evolution and medicine. I especially encourage studies in infection biology, broadly construed. We're a great and constructive journal! academic.oup.com/emph
April 10, 2025 at 4:50 PM
As new Editor in Chief of Evolution, Medicine, and Public Health, an OA society journal of ISEMPH, we welcome papers at the interface of evolution and medicine. I especially encourage studies in infection biology, broadly construed. We're a great and constructive journal! academic.oup.com/emph
Reposted by Grazyna Jasienska
Join the 2026 ISEMPH Meeting in Kiel, Germany from July 28-31! Registration and abstract submissions are open. Learn more at https://isemph.org/page-18356. Important deadlines from Feb to June 2026. #conference
ISEMPH - 2026 in Kiel, Germany
ISEMPH - 2026 in Kiel, Germany
isemph.org
January 19, 2026 at 4:37 PM
Join the 2026 ISEMPH Meeting in Kiel, Germany from July 28-31! Registration and abstract submissions are open. Learn more at https://isemph.org/page-18356. Important deadlines from Feb to June 2026. #conference
Reposted by Grazyna Jasienska
Only 3 more days to get a 20% discount on ISEMPH membership! Use code "EB2026" at checkout. Membership pays for itself if you come to even one meeting in 3 years. Register for the July meeting also, refund is easy if you can't make it after all. https://
isemph.org
isemph.org
January 27, 2026 at 10:15 PM
Only 3 more days to get a 20% discount on ISEMPH membership! Use code "EB2026" at checkout. Membership pays for itself if you come to even one meeting in 3 years. Register for the July meeting also, refund is easy if you can't make it after all. https://
isemph.org
isemph.org
Reposted by Grazyna Jasienska
Join us at this year's meeting of the International Society of Evolution, Medicine, and Public Health - ISEMPH 2026 in Kiel. See: isemph.org/page-18356
ISEMPH - 2026 in Kiel, Germany
isemph.org
January 30, 2026 at 8:03 PM
Join us at this year's meeting of the International Society of Evolution, Medicine, and Public Health - ISEMPH 2026 in Kiel. See: isemph.org/page-18356
Research possible thanks to support of @ncn.gov.pl
Levels of sex hormones decline in response to physical activity. But it is more difficult to reduce estrogen than progesterone. Relevant for breast cancer prevention. Paper from my PhD Kinga Słojewska as first author received Editor's Choice recognition.
onlinelibrary.wiley.com/doi/epdf/10....
onlinelibrary.wiley.com/doi/epdf/10....
January 10, 2026 at 10:42 AM
Research possible thanks to support of @ncn.gov.pl
Levels of sex hormones decline in response to physical activity. But it is more difficult to reduce estrogen than progesterone. Relevant for breast cancer prevention. Paper from my PhD Kinga Słojewska as first author received Editor's Choice recognition.
onlinelibrary.wiley.com/doi/epdf/10....
onlinelibrary.wiley.com/doi/epdf/10....
January 10, 2026 at 10:24 AM
Levels of sex hormones decline in response to physical activity. But it is more difficult to reduce estrogen than progesterone. Relevant for breast cancer prevention. Paper from my PhD Kinga Słojewska as first author received Editor's Choice recognition.
onlinelibrary.wiley.com/doi/epdf/10....
onlinelibrary.wiley.com/doi/epdf/10....
Reposted by Grazyna Jasienska
The International Society for Evolution, Medicine and Public Health will hold its annual meeting 28-31 July in Kiel, Germany. Abstract submission deadline 1 March isemph.org/page-18356
ISEMPH - 2026 in Kiel, Germany
isemph.org
January 5, 2026 at 11:52 AM
The International Society for Evolution, Medicine and Public Health will hold its annual meeting 28-31 July in Kiel, Germany. Abstract submission deadline 1 March isemph.org/page-18356
Reposted by Grazyna Jasienska
@royalsocietypublishing.org has published an OPEN ACCESS theme issue of Philosophical Transactions B: “Transforming cultural evolution research and its application to global futures” compiled and edited by Adam H Boyette, Sarah Mathew, Stephen Asatsa, Michael Chimento, and Rachel L Kendal 💫
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A new issue of #PhilTransB expands the field of cultural evolution and shows why it matters for today’s biggest challenges - from #inequality and cooperation to #conservation and education. Read articles (all #OA): buff.ly/S44vv6l
December 16, 2025 at 6:03 PM
@royalsocietypublishing.org has published an OPEN ACCESS theme issue of Philosophical Transactions B: “Transforming cultural evolution research and its application to global futures” compiled and edited by Adam H Boyette, Sarah Mathew, Stephen Asatsa, Michael Chimento, and Rachel L Kendal 💫
👇 👇 👇
👇 👇 👇
Reposted by Grazyna Jasienska
The deadline for abstracts for the 2026 European Human Behaviour and Evolution Association has been extended to 9 January 👇
We have already received many wonderful abstracts, thank you all! 🌟
For those who need a little extra time, we have good news: the #EHBEA2026 deadline has been extended to 9 Jan. ✍️✨
Add the finishing touches, hit submit, and join an exciting, inspiring conference!
👉 www.ehbea2026.com
For those who need a little extra time, we have good news: the #EHBEA2026 deadline has been extended to 9 Jan. ✍️✨
Add the finishing touches, hit submit, and join an exciting, inspiring conference!
👉 www.ehbea2026.com
Overview | EHBEA2026
The upcoming conference of the European Human Behaviour & Evolution Association will take place in Leiden, The Netherlands, 14th-17th of April 2026.
EHBEA conferences bring together researchers applyi...
www.ehbea2026.com
December 13, 2025 at 12:58 PM
The deadline for abstracts for the 2026 European Human Behaviour and Evolution Association has been extended to 9 January 👇
Reposted by Grazyna Jasienska
Death by Fermented Food
->Scientific American | #food | More from Lil Dr Glen EcoChat at BigEarthData.ai
->Scientific American | #food | More from Lil Dr Glen EcoChat at BigEarthData.ai
Death by Fermented Food
I only developed an enthusiasm for fermented foods a few years ago. I used to not even like yoghurt, whereas now I eat it almost every day—and I'm always happy to reach for kimchi, miso and sauerkraut. Many nutrition guides...
www.scientificamerican.com
December 7, 2025 at 1:34 PM
Reposted by Grazyna Jasienska
"COVID Vaccines Slashed Kids’ ER Visits by 76%, Study Finds"
Effectiveness of COVID Vaccines in Children (compared with unvaccinated children):
🔹76% reduction in ER or urgent care visits (ages 9 months–4 years)
🔹56% reduction in ER or Urgent care visits (ages 5–17 years)
Source: archive.md/roPXg
Effectiveness of COVID Vaccines in Children (compared with unvaccinated children):
🔹76% reduction in ER or urgent care visits (ages 9 months–4 years)
🔹56% reduction in ER or Urgent care visits (ages 5–17 years)
Source: archive.md/roPXg
December 11, 2025 at 10:15 PM
"COVID Vaccines Slashed Kids’ ER Visits by 76%, Study Finds"
Effectiveness of COVID Vaccines in Children (compared with unvaccinated children):
🔹76% reduction in ER or urgent care visits (ages 9 months–4 years)
🔹56% reduction in ER or Urgent care visits (ages 5–17 years)
Source: archive.md/roPXg
Effectiveness of COVID Vaccines in Children (compared with unvaccinated children):
🔹76% reduction in ER or urgent care visits (ages 9 months–4 years)
🔹56% reduction in ER or Urgent care visits (ages 5–17 years)
Source: archive.md/roPXg
Reposted by Grazyna Jasienska
The ClubEvMed on Dec 2 at Noon ET on this new book will be interesting! Laurence Hurst will kick it off, David Haig will comment, and I will MC a lively discussion. @evmed.bsky.social @umehap.bsky.social @tricem.bsky.social @evmedasu.bsky.social
Register now!
duke.zoom.us/meeting/regi...
Register now!
duke.zoom.us/meeting/regi...
November 21, 2025 at 12:27 AM
The ClubEvMed on Dec 2 at Noon ET on this new book will be interesting! Laurence Hurst will kick it off, David Haig will comment, and I will MC a lively discussion. @evmed.bsky.social @umehap.bsky.social @tricem.bsky.social @evmedasu.bsky.social
Register now!
duke.zoom.us/meeting/regi...
Register now!
duke.zoom.us/meeting/regi...
Reposted by Grazyna Jasienska
6 November 1939 | Sonderaktion Krakau, a German pacification action in Krakow targeting the Polish academic community. 183 people were arrested, mainly professors and lecturers of the Jagiellonian University. Most were imprisoned in KL Sachsenhausen. At least 20 of them perished.
November 6, 2025 at 1:00 PM
6 November 1939 | Sonderaktion Krakau, a German pacification action in Krakow targeting the Polish academic community. 183 people were arrested, mainly professors and lecturers of the Jagiellonian University. Most were imprisoned in KL Sachsenhausen. At least 20 of them perished.
Reposted by Grazyna Jasienska
5 November 1905 | A Pole, Tadeusz Mróz, was born in Krakow. A painter.
In #Auschwitz from 25 April 1942.
No. 33153
He was shot in the camp on 27 May 1942.
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Watch a short video about Block 11 and its yard where shooting executions were held: https://t.co/VBgDxkWLMa
In #Auschwitz from 25 April 1942.
No. 33153
He was shot in the camp on 27 May 1942.
---
Watch a short video about Block 11 and its yard where shooting executions were held: https://t.co/VBgDxkWLMa
November 5, 2025 at 9:00 AM
5 November 1905 | A Pole, Tadeusz Mróz, was born in Krakow. A painter.
In #Auschwitz from 25 April 1942.
No. 33153
He was shot in the camp on 27 May 1942.
---
Watch a short video about Block 11 and its yard where shooting executions were held: https://t.co/VBgDxkWLMa
In #Auschwitz from 25 April 1942.
No. 33153
He was shot in the camp on 27 May 1942.
---
Watch a short video about Block 11 and its yard where shooting executions were held: https://t.co/VBgDxkWLMa
Reposted by Grazyna Jasienska
Beautiful photographs illustrating a sad story: “We estimate the population at fewer than 20,000 individuals. Perhaps even fewer than 15,000. They are now critically endangered.”
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Bonobos transformed how we think about animal societies. Can we save the last of the ‘hippy apes’?
They are peaceful, female-led and use sex in everyday interactions. Now a new conservation scheme could offer a lifeline to our critically endangered close relatives living on the Congo river
www.theguardian.com
October 20, 2025 at 10:17 PM
Beautiful photographs illustrating a sad story: “We estimate the population at fewer than 20,000 individuals. Perhaps even fewer than 15,000. They are now critically endangered.”
www.theguardian.com/environment/...
www.theguardian.com/environment/...
Great discussion of this nice review at our Tea with Hormones (reading group at @jagiellonskiuni.bsky.social ) doi.org/10.1093/emph...
Re-examining the adaptive function of nausea and vomiting in pregnancy
ABSTRACT. Nausea and vomiting in pregnancy (NVP) have been proposed to have a prophylactic function. In this review, I re-examine NVP from an evolutionary
doi.org
October 26, 2025 at 4:45 PM
Great discussion of this nice review at our Tea with Hormones (reading group at @jagiellonskiuni.bsky.social ) doi.org/10.1093/emph...