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Mark Hayward

@mdhayward.bsky.social

Population health scientist and demographer. Science thrives on honesty, honor,and commitment to others. Cat dad to two girls who are vying for the record of the longest lived cats.

2,662 Followers  |  2,010 Following  |  352 Posts  |  Joined: 15.11.2024  |  2.1638

Latest posts by mdhayward.bsky.social on Bluesky

The administrationโ€™s war on children wonโ€™t be a surprise to a lot of folks but here is a nice summary of the major attacks children are experiencing.

15.02.2026 18:12 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Many thanks for writing this piece. The administration is truly engaged in a war on children.

15.02.2026 18:11 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Some days-maybe most days-it feels like academia and science are being asphyxiated.

08.02.2026 15:34 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Iโ€™m very excited to visit!

26.01.2026 01:42 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I think itโ€™s time to re-read Orwellโ€™s 1984. Best to be prepared for the 2nd year of the Trump regime.

25.01.2026 15:44 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Fascinating. Thanks for posting!

23.01.2026 02:49 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0
Preview
Association between shingles vaccination and slower biological aging: Evidence from a U.S. population-based cohort study Abstract. There is growing interest in whether adult vaccines such as shingles vaccine may slow biological aging beyond preventing acute infections. Using

There is increasing interest in whether vaccines have broader benefits for aging and health beyond their specific disease infection. Here's a recent study linking the shingles vaccine with biological aging, pointing to systemic benefits of a vaccine. academic.oup.com/biomedgeront...

20.01.2026 17:13 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I just wrote my first external tenure review letter for 2026. I donโ€™t want any of my academic colleagues to assume that I will be equally available (or quick) in the months ahead. Just saying.

19.01.2026 22:13 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

As an IU alum (PhD 1980), Iโ€™m happily stunned by the Rose Bowl halftime score. I have too much respect for Bama to assume they wonโ€™t come back. But this is a once in a lifetime event. The program with almost the worst historical record up on a legendary successful program. Iโ€™ll relish this moment.

01.01.2026 22:44 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Itโ€™s disturbing that values are transactional. Just like pardons.

01.01.2026 04:12 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

The lack of understanding of how health influences individual and collective wellbeing overall is shocking to me. And healthy workers are productive workers. Health doesnโ€™t become an individual value until a person confronts a serious condition.

31.12.2025 20:45 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Iโ€™m a demographer who studies US mortality. Looks like 2026 is shaping up to be a banner year, with vaccination rates crumbling and people foregoing health insurance because of rising costs.

Why isnโ€™t health an American value?

31.12.2025 18:10 โ€” ๐Ÿ‘ 8    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 1

Today was Pearl Harbor Day. Not a peep in the NYTs or Washington Post. It was a day that changed our country and the world. But now itโ€™s invisible since history has become passe.

08.12.2025 04:06 โ€” ๐Ÿ‘ 5    ๐Ÿ” 1    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Simply appalling. Sadly a daily occurrence. Their cruelty knows no bounds.

02.12.2025 03:17 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I agree. It seems like the swings are getting wider.

29.11.2025 02:07 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Iโ€™m a Boomer who has watched the US come apart at the seams (eg, Vietnam), then lace itself together, only to come apart at the seams!(Watergate)โ€ฆand it still continues. This dynamic is crazy making both domestically and internationally. But at least I have perspective LOL.

29.11.2025 02:01 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Iโ€™m curious what Dems think the response should be to a party that will starve Americans, destroy airlines, create bankruptcies and willingly kill thousands of Americans. Itโ€™s not your mom and popโ€™s GOP. The barbarians are at the gates.

10.11.2025 23:56 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Iโ€™m so sorry about your grandma. Dementia is one of the most socially malleable conditions out there. Her onset could be due to a myriad of exposures as well as genetic risk.

04.11.2025 20:31 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I didnโ€™t mind the repeat visit. Itโ€™s the momโ€™s encouragement that took me aback somewhat. ๐Ÿ˜‚

04.11.2025 18:28 โ€” ๐Ÿ‘ 0    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

My research team has published research showing that malnutrition and hunger in childhood are long-term risk factors for dementia decades later in life. Makes me think about the long-term health consequences of withholding SNAP benefits from families.

04.11.2025 03:44 โ€” ๐Ÿ‘ 88    ๐Ÿ” 30    ๐Ÿ’ฌ 6    ๐Ÿ“Œ 0

I asked one set of kids who came to our door on Halloween if theyd already been at my house. They said yes they hadโ€ฆbut their mom said it was OK to swing by a second time. Hmmmโ€ฆsome parents need parenting lessons.

04.11.2025 03:38 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

I love their formalism. But ignoring decades of work in other fields is not acceptable. A google scholar search will reveal this. Once an economist wrote a paper based on my work. I told him the editor wouldnโ€™t allow him to cite me. He didnโ€™t believe me. I was right and he was stunned. I wasnโ€™t.

26.10.2025 22:09 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 1    ๐Ÿ“Œ 0

Nothing in social science is real until an economist says it. Just ask sociologists and psychologists. As a former social science journal editor, I can attest that the sin is quite common.

26.10.2025 17:52 โ€” ๐Ÿ‘ 51    ๐Ÿ” 1    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

I never realized that Trump owned cattle ranches and soy bean farms in Argentina. Who would have guessed?

22.10.2025 18:20 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Before he left, he confessed that he was a polio survivor. It was evident as he walked out of the bar. Yes, we had a lot in common when it came to vaccines.

17.10.2025 22:50 โ€” ๐Ÿ‘ 3    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I gave a keynote at a conference & have been relaxing at the hotel bar. I struck up a conversation with a guy next to me. He asked what I do for a living and I hesitated. Iโ€™m a biodemographer and social epidemiologist. This led to an amazing conversation about our nationโ€™s health.

17.10.2025 22:50 โ€” ๐Ÿ‘ 5    ๐Ÿ” 0    ๐Ÿ’ฌ 2    ๐Ÿ“Œ 0

My lab group met today. Grad students and postdocs engaged in cutting edge research on health and aging topics. Every meeting it seems that they have a new article accepted or fascinating results. Theyโ€™re provocative and fun! The next generation in this area of science. I love it!

10.10.2025 02:09 โ€” ๐Ÿ‘ 4    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

I continue to be stunned at how poor health literacy is in the US. Youโ€™d think folks would have learned something during the worst of the pandemic. It almost seems the opposite. Perhaps the COVID โ€œwormโ€ ate peopleโ€™s brains.

09.10.2025 18:19 โ€” ๐Ÿ‘ 1    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

Today in my mortality grad seminar, we focused on what transpired in the US & comparisons with high income countries.The students were shocked by how devastating COVID was to US life expectancy compare to Europe. Then we discussed the Great Barringron Declaration. They were stunned.

08.10.2025 02:49 โ€” ๐Ÿ‘ 11    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

A brilliant summary. Thanks.

04.10.2025 22:05 โ€” ๐Ÿ‘ 2    ๐Ÿ” 0    ๐Ÿ’ฌ 0    ๐Ÿ“Œ 0

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