Kazuyo Machiyama
@kmachiyama.bsky.social
Researcher in Reproductive health and rights | fertility & infertility & ivf | demography & public health | LSHTM | East London & 🇯🇵 | views on my own
Happy Halloween 🎃 👻 😁
October 31, 2025 at 12:31 AM
Happy Halloween 🎃 👻 😁
“everything was relative — there was no absolute standard of how things worked: "The key is not necessarily feeling completely comfortable, but understanding why these differences exist."
www.japantimes.co.jp/business/202...
www.japantimes.co.jp/business/202...
Flying academia's flag for Japan, with a nod to the U.K.
Mari Sako has adopted the idea of being a 'global citizen' through her work in academia.
www.japantimes.co.jp
October 27, 2025 at 1:12 PM
“everything was relative — there was no absolute standard of how things worked: "The key is not necessarily feeling completely comfortable, but understanding why these differences exist."
www.japantimes.co.jp/business/202...
www.japantimes.co.jp/business/202...
Reposted by Kazuyo Machiyama
Kicking off London Universities Population Seminars for the new academic year!
Join us Oct 28 in person (LSE, KSW.G.01) or online to hear from Prof Karen Glaser (KCL) on mental & physical health changes among adults aged 50-69 in England.
Full schedule & sign up:
sites.google.com/view/londonp...
Join us Oct 28 in person (LSE, KSW.G.01) or online to hear from Prof Karen Glaser (KCL) on mental & physical health changes among adults aged 50-69 in England.
Full schedule & sign up:
sites.google.com/view/londonp...
October 22, 2025 at 12:06 PM
Kicking off London Universities Population Seminars for the new academic year!
Join us Oct 28 in person (LSE, KSW.G.01) or online to hear from Prof Karen Glaser (KCL) on mental & physical health changes among adults aged 50-69 in England.
Full schedule & sign up:
sites.google.com/view/londonp...
Join us Oct 28 in person (LSE, KSW.G.01) or online to hear from Prof Karen Glaser (KCL) on mental & physical health changes among adults aged 50-69 in England.
Full schedule & sign up:
sites.google.com/view/londonp...
“Records will always fall—but when they fall too fast, it’s a warning sign.
In sport, it’s exciting.
In climate, it’s alarming.”
In sport, it’s exciting.
In climate, it’s alarming.”
At the World Championships in Tokyo, Armand Duplantis cleared 6.30m for his 14th pole vault world record. He’s literally raising the bar again and again.
But what does breaking records have to do with climate change? 🧵
1/9
1/9
But what does breaking records have to do with climate change? 🧵
1/9
1/9
October 15, 2025 at 2:42 PM
“Records will always fall—but when they fall too fast, it’s a warning sign.
In sport, it’s exciting.
In climate, it’s alarming.”
In sport, it’s exciting.
In climate, it’s alarming.”
Latest special issue from Studies in Family planning
onlinelibrary.wiley.com/toc/17284465...
onlinelibrary.wiley.com/toc/17284465...
<em>Studies in Family Planning</em> | Population Council Journal | Wiley Online Library
Click on the title to browse this issue
onlinelibrary.wiley.com
October 15, 2025 at 2:39 PM
Latest special issue from Studies in Family planning
onlinelibrary.wiley.com/toc/17284465...
onlinelibrary.wiley.com/toc/17284465...
Reposted by Kazuyo Machiyama
In a personal blog, Professor Francesco Checchi discusses the pressing situation in #Gaza amidst increased levels of starvation, and what this may mean for the future 👇
www.lshtm.ac.uk/research/cen...
www.lshtm.ac.uk/research/cen...
Famine and genocide in Gaza: A personal view | LSHTM
Famine and genocide in Gaza: A personal view | LSHTM
www.lshtm.ac.uk
July 28, 2025 at 10:56 AM
In a personal blog, Professor Francesco Checchi discusses the pressing situation in #Gaza amidst increased levels of starvation, and what this may mean for the future 👇
www.lshtm.ac.uk/research/cen...
www.lshtm.ac.uk/research/cen...
Reposted by Kazuyo Machiyama
Great example of where AI gets all the credit but the ACTUAL contribution (in this case, sperm for fertilisation) was from the human. AI helped. It helped a lot. But without the human, AI would be impotent. Good allegory here.
edition.cnn.com/2025/07/03/h...
edition.cnn.com/2025/07/03/h...
A couple tried for 18 years to get pregnant. AI made it happen | CNN
After trying to conceive for 18 years, one couple is now pregnant with their first child thanks to the power of artificial intelligence.
edition.cnn.com
July 6, 2025 at 7:44 PM
Great example of where AI gets all the credit but the ACTUAL contribution (in this case, sperm for fertilisation) was from the human. AI helped. It helped a lot. But without the human, AI would be impotent. Good allegory here.
edition.cnn.com/2025/07/03/h...
edition.cnn.com/2025/07/03/h...
1 in 32 babies now born after IVF in the UK - roughly one child in every classroom.
This year's HFEA report has more demographic perspectives:
See more findings 👇
tinyurl.com/47bmjm8k
tinyurl.com/5cr2tnay
This year's HFEA report has more demographic perspectives:
See more findings 👇
tinyurl.com/47bmjm8k
tinyurl.com/5cr2tnay
Fertility Trends 2023
YouTube video by Human Fertilisation & Embryology Authority (HFEA)
youtu.be
June 26, 2025 at 12:00 PM
1 in 32 babies now born after IVF in the UK - roughly one child in every classroom.
This year's HFEA report has more demographic perspectives:
See more findings 👇
tinyurl.com/47bmjm8k
tinyurl.com/5cr2tnay
This year's HFEA report has more demographic perspectives:
See more findings 👇
tinyurl.com/47bmjm8k
tinyurl.com/5cr2tnay
Reposted by Kazuyo Machiyama
“If it can seem at times that seagulls are taking over British towns, the fact is that their numbers aren’t rising at all – they are falling sharply. In some traditional coastal nesting sites, the most recent national seabird census found, the populations have all but collapsed”
The seagulls have landed: why gulls are encroaching on Britain’s towns
Avian invaders have coastal communities in Britain and beyond in a flap – but people are learning how to live with them
www.theguardian.com
June 22, 2025 at 8:28 AM
“If it can seem at times that seagulls are taking over British towns, the fact is that their numbers aren’t rising at all – they are falling sharply. In some traditional coastal nesting sites, the most recent national seabird census found, the populations have all but collapsed”
The temperature change in tokyo. showyourstripes.info/c/asia/japan...
Show Your Stripes
Visualising how the climate has changed for every country across the globe
showyourstripes.info
June 20, 2025 at 11:23 PM
The temperature change in tokyo. showyourstripes.info/c/asia/japan...
Reposted by Kazuyo Machiyama
Menopause in low and middle-income countries:
“The prevalences of vasomotor symptoms, joint pain and sexual concerns were comparable with high-income countries. However, data on the severity and burden of symptoms were scarce”
doi.org/10.1080/1369...
“The prevalences of vasomotor symptoms, joint pain and sexual concerns were comparable with high-income countries. However, data on the severity and burden of symptoms were scarce”
doi.org/10.1080/1369...
Menopause in low and middle-income countries: a scoping review of knowledge, symptoms and management
This study aimed to systematically map available evidence on menopause-related knowledge, symptoms and management in low and middle-income countries (LMICs) and identify critical gaps to inform res...
doi.org
June 20, 2025 at 7:18 PM
Menopause in low and middle-income countries:
“The prevalences of vasomotor symptoms, joint pain and sexual concerns were comparable with high-income countries. However, data on the severity and burden of symptoms were scarce”
doi.org/10.1080/1369...
“The prevalences of vasomotor symptoms, joint pain and sexual concerns were comparable with high-income countries. However, data on the severity and burden of symptoms were scarce”
doi.org/10.1080/1369...
Indeed another excellent and timely piece to unpack the discourse behind it.
“The lesson from abroad is clear: lasting change requires transforming the conditions that make parenthood feel untenable, not just offering token incentives.”
“The lesson from abroad is clear: lasting change requires transforming the conditions that make parenthood feel untenable, not just offering token incentives.”
Another excellent piece from a demographer, this time Stuart Gietel-Basten, on how "pronatalism is a dead end"
"Without addressing the root causes of low fertility—inequality, instability, and the incompatibility of work and family life—top-down efforts to “encourage” childbearing will fail"
"Without addressing the root causes of low fertility—inequality, instability, and the incompatibility of work and family life—top-down efforts to “encourage” childbearing will fail"
The politics of pronatalism and the two-child benefit cap - British Politics and Policy at LSE
Nigel Farage supports the scraping the two-child benefit cap as a way of encouraging people to have more children. But pronatalist policies that offer a one-off "baby bonus" are not effective.
blogs.lse.ac.uk
June 11, 2025 at 10:51 PM
Indeed another excellent and timely piece to unpack the discourse behind it.
“The lesson from abroad is clear: lasting change requires transforming the conditions that make parenthood feel untenable, not just offering token incentives.”
“The lesson from abroad is clear: lasting change requires transforming the conditions that make parenthood feel untenable, not just offering token incentives.”
Reposted by Kazuyo Machiyama
Another excellent piece from a demographer, this time Stuart Gietel-Basten, on how "pronatalism is a dead end"
"Without addressing the root causes of low fertility—inequality, instability, and the incompatibility of work and family life—top-down efforts to “encourage” childbearing will fail"
"Without addressing the root causes of low fertility—inequality, instability, and the incompatibility of work and family life—top-down efforts to “encourage” childbearing will fail"
The politics of pronatalism and the two-child benefit cap - British Politics and Policy at LSE
Nigel Farage supports the scraping the two-child benefit cap as a way of encouraging people to have more children. But pronatalist policies that offer a one-off "baby bonus" are not effective.
blogs.lse.ac.uk
June 11, 2025 at 6:41 AM
Another excellent piece from a demographer, this time Stuart Gietel-Basten, on how "pronatalism is a dead end"
"Without addressing the root causes of low fertility—inequality, instability, and the incompatibility of work and family life—top-down efforts to “encourage” childbearing will fail"
"Without addressing the root causes of low fertility—inequality, instability, and the incompatibility of work and family life—top-down efforts to “encourage” childbearing will fail"
Reposted by Kazuyo Machiyama
👶 #Farage wants a UK baby boom — will it work? 🍼
Our Director @melindacmills.bsky.social says: “Throwing money at it doesn’t work.”
Tax breaks ≠ baby boom.
Work hours, #housing, #childcare — it takes an ecosystem.
📎 Telegraph article:
tinyurl.com/m6b9kbxm
#fertility #demography
Our Director @melindacmills.bsky.social says: “Throwing money at it doesn’t work.”
Tax breaks ≠ baby boom.
Work hours, #housing, #childcare — it takes an ecosystem.
📎 Telegraph article:
tinyurl.com/m6b9kbxm
#fertility #demography
Farage wants a British baby boom – but he’s missing a trick
Reform UK has moved into pro-natal policies territory – but experts warn there’s no magic silver bullet
tinyurl.com
June 2, 2025 at 6:19 PM
👶 #Farage wants a UK baby boom — will it work? 🍼
Our Director @melindacmills.bsky.social says: “Throwing money at it doesn’t work.”
Tax breaks ≠ baby boom.
Work hours, #housing, #childcare — it takes an ecosystem.
📎 Telegraph article:
tinyurl.com/m6b9kbxm
#fertility #demography
Our Director @melindacmills.bsky.social says: “Throwing money at it doesn’t work.”
Tax breaks ≠ baby boom.
Work hours, #housing, #childcare — it takes an ecosystem.
📎 Telegraph article:
tinyurl.com/m6b9kbxm
#fertility #demography
Reposted by Kazuyo Machiyama
Over the weekend, BBC Radio 4’s Any Questions programme - not typically a bastion of far-right values - included uncontested claims of how “low birthrates are the biggest problem the UK faces”. Worrying how quickly this view, rejected by experts in demography, is becoming mainstream
Monday briefing: What Nigel Farage’s new obsession with nativism could mean for the UK
In today’s newsletter: Reform’s latest policy shift echoes strategies seen in Europe’s far right. Will this approach gain traction in the UK?
www.theguardian.com
June 2, 2025 at 6:30 PM
Over the weekend, BBC Radio 4’s Any Questions programme - not typically a bastion of far-right values - included uncontested claims of how “low birthrates are the biggest problem the UK faces”. Worrying how quickly this view, rejected by experts in demography, is becoming mainstream
Reposted by Kazuyo Machiyama
🌟 Join us for our latest free webinar on Thursday, 12 June 2025. Discover new harmonised asthma and diabetes measures, find out how you could use these data to compare 5 generations, and learn about other future health data releases.
👉 Register here: buff.ly/1TF4P00
👉 Register here: buff.ly/1TF4P00
May 27, 2025 at 10:25 AM
🌟 Join us for our latest free webinar on Thursday, 12 June 2025. Discover new harmonised asthma and diabetes measures, find out how you could use these data to compare 5 generations, and learn about other future health data releases.
👉 Register here: buff.ly/1TF4P00
👉 Register here: buff.ly/1TF4P00
Looking forward to connecting repro people this Friday! More information and free tickets from👇
Another year, another #ReproSalon! It's time to come together again for a spectacular evening on the Bush House rooftop terrace, overlooking the gorgeous London sunset. 30 May. 🎉
Looking forward to reconnecting with #reproduction people in style. Tickets:
www.eventbrite.co.uk/e/new-reprod...
Looking forward to reconnecting with #reproduction people in style. Tickets:
www.eventbrite.co.uk/e/new-reprod...
New Reproduction Salon + New Reproductive Order Book Launch
The Reproduction Salon returns and we will launch the exciting new book The New Reproductive Order (NYU Press, 2025)
www.eventbrite.co.uk
May 27, 2025 at 5:45 AM
Looking forward to connecting repro people this Friday! More information and free tickets from👇
1 in 5 Births in Seoul Results from Infertility Procedure in august 2024! The Seoul Metropolitan Govt will support 25 treatments per couple.
The relative contribution of ART and the support is highest i have ever seen. ART babies are about 10% in Japan and Denmark
world.seoul.go.kr/seoul-expand...
The relative contribution of ART and the support is highest i have ever seen. ART babies are about 10% in Japan and Denmark
world.seoul.go.kr/seoul-expand...
Seoul Expands Support for Infertility Treatments: 1 in 5 Births in Seoul Results from Infertility Procedure -
As of Sep. 2024, the Seoul Metropolitan Government (SMG) sees a 61.8% increase in fertility treatment support compared to last year, with babies born through such assistance accounting for 15.8% of al...
world.seoul.go.kr
May 22, 2025 at 2:25 PM
1 in 5 Births in Seoul Results from Infertility Procedure in august 2024! The Seoul Metropolitan Govt will support 25 treatments per couple.
The relative contribution of ART and the support is highest i have ever seen. ART babies are about 10% in Japan and Denmark
world.seoul.go.kr/seoul-expand...
The relative contribution of ART and the support is highest i have ever seen. ART babies are about 10% in Japan and Denmark
world.seoul.go.kr/seoul-expand...
Do you have expertise in: AI/big data OR robotics and automation in heallthcare/biological research OR Biostatistics and reviewing the quality of fertility research?
HFEA, UK national regulator of embryo research&fertility treatment, is looking to appoint one new external advisor w the expertise.
HFEA, UK national regulator of embryo research&fertility treatment, is looking to appoint one new external advisor w the expertise.
HFEA: UK fertility regulator
We are the UK's independent regulator of fertility treatment and research using human embryos.
www.hfea.gov.uk
May 10, 2025 at 5:30 AM
Do you have expertise in: AI/big data OR robotics and automation in heallthcare/biological research OR Biostatistics and reviewing the quality of fertility research?
HFEA, UK national regulator of embryo research&fertility treatment, is looking to appoint one new external advisor w the expertise.
HFEA, UK national regulator of embryo research&fertility treatment, is looking to appoint one new external advisor w the expertise.
Reposted by Kazuyo Machiyama
Die with zero.
Great news that the foundation is stepping in further. www.gatesfoundation.org/ideas/articl...
Great news that the foundation is stepping in further. www.gatesfoundation.org/ideas/articl...
My new deadline: 20 years to give away virtually all my wealth
During the first 25 years of the Gates Foundation, we gave away more than $100 billion. Over the next two decades, we will double our giving.
www.gatesfoundation.org
May 9, 2025 at 8:37 PM
Die with zero.
Great news that the foundation is stepping in further. www.gatesfoundation.org/ideas/articl...
Great news that the foundation is stepping in further. www.gatesfoundation.org/ideas/articl...