kmachiyama.bsky.social
Kazuyo Machiyama
@kmachiyama.bsky.social
1.5K followers 140 following 42 posts
Researcher in Reproductive health and rights | fertility & infertility & ivf | demography & public health | LSHTM | East London & 🇯🇵 | views on my own
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Reposted by Kazuyo Machiyama
lshtm-crises.bsky.social
Health in Humanitarian Crises Centre, LSHTM @lshtm-crises.bsky.social · Jul 28
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...
Famine and genocide in Gaza: A personal view | LSHTM
Famine and genocide in Gaza: A personal view | LSHTM
www.lshtm.ac.uk
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Reposted by Kazuyo Machiyama
trishgreenhalgh.bsky.social
Trish Greenhalgh @trishgreenhalgh.bsky.social · Jul 6
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...
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
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · Jun 26
▪️ Almost 21,000 babies were born from IVF in 2023
▪️ 11% of all UK births among women aged 40-44 are as a result of IVF.
▪️ Births from donor treatment made up around 1 in 5 of all IVF and DI births in 2023, accounting for around 1 in 153 of all UK births, which is more than previous years.
kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · Jun 26
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
Fertility Trends 2023
YouTube video by Human Fertilisation & Embryology Authority (HFEA)
youtu.be
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · Jun 26
www.theguardian.com/society/2025...
Equivalent of one child in every British classroom now born via IVF, data shows
Proportion of women giving birth after fertility treatment up by more than a third in a decade, figures reveal
www.theguardian.com
Reposted by Kazuyo Machiyama
rebeccasear.bsky.social
Rebecca Sear @rebeccasear.bsky.social · Jun 22
“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
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · Jun 20
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
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Reposted by Kazuyo Machiyama
rebeccasear.bsky.social
Rebecca Sear @rebeccasear.bsky.social · Jun 20
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...
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
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · Jun 11
www-bbc-com.cdn.ampproject.org/c/s/www.bbc....
World fertility rates in 'unprecedented decline', UN says - BBC News
Hundreds of millions of people are not able to have the number of children they want, the UN warns.
www-bbc-com.cdn.ampproject.org
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · Jun 11
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.”
rebeccasear.bsky.social
Rebecca Sear @rebeccasear.bsky.social · Jun 11
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"
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
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Reposted by Kazuyo Machiyama
rebeccasear.bsky.social
Rebecca Sear @rebeccasear.bsky.social · Jun 11
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"
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
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · Jun 8
www.theguardian.com/world/2025/j...
Japan records lowest number of births in more than a century, as population fears grow
New government data shows the number of births reached 686,061 in 2024, a decline of 5.7% from the previous year and the lowest since statistics were first kept in 1899
www.theguardian.com
Reposted by Kazuyo Machiyama
oxforddemsci.bsky.social
Leverhulme Centre for Demographic Science, Oxford University @oxforddemsci.bsky.social · Jun 2
👶 #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
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
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Reposted by Kazuyo Machiyama
rebeccasear.bsky.social
Rebecca Sear @rebeccasear.bsky.social · Jun 2
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
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Reposted by Kazuyo Machiyama
clscohorts.bsky.social
UCL Centre for Longitudinal Studies @clscohorts.bsky.social · May 27
🌟 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
Harmonising physical health measures in five national cohort studies webinar information with a photo of a little girl sitting on a sofa using an inhaler while reading a book.
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · May 27
Looking forward to connecting repro people this Friday! More information and free tickets from👇
lucyvandewiel.bsky.social
Lucy van de Wiel @lucyvandewiel.bsky.social · Apr 7
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...
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
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · May 22
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...
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
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · May 14
news.un.org/en/story/202...
UN chief calls for major reforms to cut costs and improve efficiency
Amid financial strain and growing global challenges, UN Secretary-General António Guterres is pushing for wide-ranging structural reforms to enhance the world body’s effectiveness.
news.un.org
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · May 10
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 fertility regulator
We are the UK's independent regulator of fertility treatment and research using human embryos.
www.hfea.gov.uk
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Reposted by Kazuyo Machiyama
trishgreenhalgh.bsky.social
Trish Greenhalgh @trishgreenhalgh.bsky.social · May 9
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · May 9
Die with zero.
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
kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · May 6
us02web.zoom.us/meeting/regi...
kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · Apr 13
“These findings demonstrate that ICSI does not improve cumulative birth rates compared to conventional IVF and support conventional IVF as the preferred first-line treatment for patients with normal or nonseverely decreased sperm quality.” www.nature.com/articles/s41...
IVF versus ICSI in patients without severe male factor infertility: a randomized clinical trial - Nature Medicine
Intracytoplasmic sperm injection, usually reserved for cases of male infertility, was found to be nonsuperior to conventional in vitro fertilization in couples without male infertility concerns.
www.nature.com
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kmachiyama.bsky.social
Kazuyo Machiyama @kmachiyama.bsky.social · Apr 13
In this article the korean professor says this. So well said.
www.washingtonpost.com/world/2025/0...
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Reposted by Kazuyo Machiyama
rebeccasear.bsky.social
Rebecca Sear @rebeccasear.bsky.social · Apr 13
Yes! An entire article which challenges the “population collapse” narrative! 👏👏

“reproductive freedom is often treated as an obstacle to government ambitions”

www.washingtonpost.com/world/2025/0...
Governments want more babies. Are reproductive freedoms at risk?
Low fertility rates have sparked panic and pronatalist initiatives around the world. But some experts are more concerned about the ethics of pushing for more births.
www.washingtonpost.com
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