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Ryohei Mogi

@ryomogi.bsky.social

Demographer bridging research and action Turning evidence into action to tackle low fertility with policymakers, media, & society. ๐Ÿ“ฉ ryohei.mogi(at)upf(.)edu

509 Followers  |  133 Following  |  17 Posts  |  Joined: 14.10.2023  |  1.6025

Latest posts by ryomogi.bsky.social on Bluesky

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I'm looking forward to speaking at @nestauk.bsky.social & @bitglobal.bsky.social on 26 November, diving into Japanโ€™s approach to healthy ageing โ€“ and what the UK can learn.
Join me in London or online, alongside experts from Japan and the UK in health and social care: bit.ly/3XA1iVv

17.11.2025 13:37 โ€” ๐Ÿ‘ 7    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I had the privilege of being interviewed by rtve (@rtvenoticias.rtve.es ), Spainโ€™s national public broadcaster, about our research on fertility desire and romantic partnership.

The interview was a live radio show and now it is online (2:15-7:45): www.rtve.es/play/audios/...

01.10.2025 05:51 โ€” ๐Ÿ‘ 2    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Have you heard of the Fire Horse Year?

In Japan, fertility dropped 26% that year & jumped 41% the next โ€” the biggest change in world history since 1950. The reason? A widespread superstition related to the Fire Horse Year.

I just spoke about this in an interview with @financialtimes.com

26.09.2025 04:26 โ€” ๐Ÿ‘ 3    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

A study with @ryotamugiyama.bsky.social and @alyceraybould.bsky.social

Supported by @demosocupf.bsky.social @upf.edu @ucl.ac.uk

@iussp.bsky.social, @popassocamerica.bsky.social @populationeu.bsky.social

25.09.2025 07:15 โ€” ๐Ÿ‘ 3    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Un estudi amb anร lisis de la UPF explora com tenir parella determina canvis en els desitjos de fertilitat al Japรณ La recerca, en quรจ ha pres part Ryohei Mogi, investigador del Departament de Ciรจncies Polรญtiques i Socials de la Universitat, mostra que les persones sense parella sentimental tenen mรฉs probabilitats ...

A press release of our new study in English/Spanish/Catalan has just out. We explain a situation those who do not have any romantic partner in Japan and found that individuals without a romantic partner are more likely to revise their fertility desires downward.

www.upf.edu/web/focus/w/...

25.09.2025 07:10 โ€” ๐Ÿ‘ 5    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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All you need to know about low fertility issues in Japan This article aims to share the basic knowledge on Japanese low fertility issues using data and academic findings.

Full blog post: medium.com/@rmogi/all-y...

17.09.2025 11:24 โ€” ๐Ÿ‘ 2    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Only 4 ๐ค๐ž๐ฒ ๐Ÿ๐ข๐ ๐ฎ๐ซ๐ž๐ฌ ๐ญ๐จ ๐ฎ๐ง๐๐ž๐ซ๐ฌ๐ญ๐š๐ง๐ ๐‰๐š๐ฉ๐š๐ง๐ž๐ฌ๐ž ๐ฅ๐จ๐ฐ ๐Ÿ๐ž๐ซ๐ญ๐ข๐ฅ๐ข๐ญ๐ฒ ๐ฌ๐ข๐ญ๐ฎ๐š๐ญ๐ข๐จ๐ง

17.09.2025 05:44 โ€” ๐Ÿ‘ 9    ๐Ÿ” 1    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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ใ€็ ”็ฉถๆˆๆžœใƒปใƒ—ใƒฌใ‚นใƒชใƒชใƒผใ‚นใ€‘ไบค้š›็›ธๆ‰‹ใŒใ„ใชใ„ใจใ€Œๅญใฉใ‚‚ใŒๆฌฒใ—ใ„ใ€ใŒไธ็ขบๅฎŸใซใ€€ๆ‹ๆ„›้–ขไฟ‚ใŒๅ‡บ็”Ÿ้ก˜ๆœ›ใซไธŽใˆใ‚‹ๅฝฑ้Ÿฟใ‚’ใƒ‘ใƒใƒซใƒ‡ใƒผใ‚ฟใงๅฎŸ่จผ๏ฝœๅญฆ็ฟ’้™ขๅคงๅญฆ ๅญฆ็ฟ’้™ขๅคงๅญฆใฎๅ…ฌๅผใ‚ตใ‚คใƒˆใงใ™ใ€‚ๅคงๅญฆๆฆ‚่ฆใ€ๅ…ฅ่ฉฆๆƒ…ๅ ฑใ€ๅญฆ้ƒจใƒปๅคงๅญฆ้™ขๆƒ…ๅ ฑ็ญ‰ใ€ๅ„็จฎๆƒ…ๅ ฑใŒใ”่ฆงใซใชใ‚Œใพใ™ใ€‚

ๅ…ˆๆ—ฅๅ‡บ็‰ˆใ•ใ‚ŒใŸ่ซ–ๆ–‡ academic.oup.com/sf/advance-a... ใฎใƒ—ใƒฌใ‚นใƒชใƒชใƒผใ‚นใ‚’ๅ‡บใ—ใฆใ‚‚ใ‚‰ใ„ใพใ—ใŸใ€‚

ไบค้š›็›ธๆ‰‹ใŒใ„ใชใ„ใจใ€Œๅญใฉใ‚‚ใŒๆฌฒใ—ใ„ใ€ใŒไธ็ขบๅฎŸใซใ€€ๆ‹ๆ„›้–ขไฟ‚ใŒๅ‡บ็”Ÿ้ก˜ๆœ›ใซไธŽใˆใ‚‹ๅฝฑ้Ÿฟใ‚’ใƒ‘ใƒใƒซใƒ‡ใƒผใ‚ฟใงๅฎŸ่จผ
www.univ.gakushuin.ac.jp/about/press/...

This is a joint work with @ryomogi.bsky.social @alyceraybould.bsky.social

26.08.2025 06:15 โ€” ๐Ÿ‘ 5    ๐Ÿ” 2    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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2026 Will Be the Year of the Fire Horse (Hinoe-Uma). What Impact on Fertility in Japan? The year 2026 will be the Year of the Fire Horse (Hinoe-Uma, ไธ™ๅˆ). The previous Fire Horse yearsโ€Šโ€”โ€Š1906 and 1966โ€Šโ€”โ€Šhad a major impact onโ€ฆ

rmogi.medium.com/2026-will-be...

09.09.2025 05:11 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Do you know year of Fire Horse? And do you know the total fertility rate dropped 26% in the last fire horse year in Japan?

My new blog post explains how the superstition changed fertility pattern in the last Fire Horse Years (1906, 1966) in Japan.

2026 will be Fire Horse...

09.09.2025 05:11 โ€” ๐Ÿ‘ 17    ๐Ÿ” 4    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 2

@demosocupf.bsky.social
@upf.edu
@ucl.ac.uk
@iussp.bsky.social

06.08.2025 07:51 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Exposure to non-partnership and fertility desires among childless population in Japan Abstract. Japan is a country with low fertility (TFR 1.20) and proportionally high numbers remaining unmarried. This is significant as nearly all births oc

Ryota Mugiyama (@ryotamugiyama.bsky.socialโ€ฌ)

academic.oup.com/sf/advance-a...

06.08.2025 07:49 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0
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[New finding!]

Ryohei Mogi, Ryota Mugiyama, & Alyce Raybould (@alyceraybould.bsky.social ) has shown that individuals without a romantic partner are more likely to revise their fertility desires downward.โ€ช

โ€ฌ

06.08.2025 05:36 โ€” ๐Ÿ‘ 22    ๐Ÿ” 8    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 2
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All you need to know about low fertility issues in Japan This article aims to share the basic knowledge on Japanese low fertility issues using data and academic findings.

Why is Japanโ€™s fertility rate fallingโ€”and whatโ€™s really behind it?

We wrote a 10,000+ word guide on it in plain English with data + research insights.

No jargon, just clarity.

Please share this piece if you find it useful!

rmogi.medium.com/all-you-need...

22.04.2025 07:21 โ€” ๐Ÿ‘ 9    ๐Ÿ” 3    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
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Tomorrow at 12:30, I will give a talk about some of my ongoing works on partnership among childless individuals at the DemoSoc research group, UPF.

It is a short notice, but please come if you are around Barcelona! I would be happy to see you there! Unfortunately, not available online.

19.02.2024 12:38 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Super excited to organise a session โ€œRelationship as an initial step of union formation and childbearingโ€ at #IPC2025 ๐Ÿ™Œ

Please consider submitting your works on relationship/dating. You can even start now as we have plenty of time to the submission deadline: Sep2024!

iussp.org/sites/defaul...

17.11.2023 13:09 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I started publishing a blog post summarising research on low fertility for a lay audience. The first blog post is about the overview of low fertility in Japan.

Please help me to spread this post to outside of my network๐Ÿ™Œ

rmogi.medium.com/overview-und...

20.10.2023 12:33 โ€” ๐Ÿ‘ 17    ๐Ÿ” 9    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 1

Hello Bluesky!

18.10.2023 19:24 โ€” ๐Ÿ‘ 9    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

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