Craig H Warden, PhD

PhD Physiology, UC San Diego. Emeritus Professor of Pediatrics and Genetics from UC Davis. Science based health advice. Husband, father, grandfather.

[Craig H Warden, PhD @cwarden19]

Ancestry DNA says that I have thousands of cousins living in nearly every state of the US. All of my cousins are good people who I would trust with keys to my house, regardless of the likelihood that our politics differ. So, if I say something objectionable, please ask– are we maybe cousins??

[Joe Trippi @JoeTrippi]

Please take the time to watch my TED Talk on why X is a Skinner box and we are all the rats https://t.co/GK1Xi4mJBq

[Craig H Warden, PhD @cwarden19]

@EricTopol @SophieEganM @NYTHealth The article is clearly biased and motivated by a point of view. it is not an unbiased analysis of data. I'll continue to eat chicken and fish and plant proteins thank-you.

[Craig H Warden, PhD @cwarden19]

Hey "X" I'm having significant regretted time because you keep showing me posts from pseudo-scientists who make statements and provide no link to papers with data. I keep blocking and you just show me someone else. I require data and links to papers.

[Avi Roy @agingroy]

A single shot that slows your biological clock. Five aging markers improved. Benefits lasting 4+ years.

New study (n=3,884, US Health and Retirement Study)

Shingles vaccination was associated with:
-> Lower inflammation (p=0.003)
-> Slower epigenetic aging (p=0.0001)
-> Slower transcriptomic aging (p<0.0001)
-> Lower composite biological aging score (p=0.0002)

The mechanism: chickenpox virus hides in your nerve cells for life. As you age, it reactivates silently, fueling chronic inflammation even without causing shingles. Suppressing that reactivation removes a hidden accelerant of biological aging.

The shingles vaccine is recommended for adults 50+ and covered at no cost by most insurance plans.

Vaccines aren’t just for preventing infection anymore. They’re longevity tools.

[Seth Abramson @SethAbramson]

(🚨) I've made the same posts on Threads and Twitter for 6 months now, so I can now report back on the evidence that Elon Musk is limiting the reach of his critics here. I warn you, the data is *very* subtle.

FOLLOWERS GAINED ON THREADS: 236,000

FOLLOWERS GAINED ON TWITTER: 400

[Dr Terry Simpson @drterrysimpson]

You are clinging to a statistic you don’t understand.

The “6% died of COVID only” line comes from a CDC table listing death certificates that had no additional conditions recorded. That doesn’t mean the other 94% “didn’t die of COVID.” It means COVID caused pneumonia, ARDS, clotting, stroke, or heart failure — which is what viral infections do.

When HIV patients died of pneumocystis pneumonia, we did not say, “Ah, they didn’t die of HIV.”
We understood cause and consequence.

Over 1.3 million excess deaths occurred in the United States during the pandemic period. That is not a rounding error. That is not “just flu.” That is a historic mortality event confirmed by excess death curves — which do not care about hospital coding, politics, or your favorite podcast.

As for the claim that doctors diagnosed COVID for money — that requires believing that thousands of physicians, hospitals, coders, auditors, and insurers across every political jurisdiction engaged in coordinated fraud without evidence. That is conspiracy thinking dressed up as fiscal concern.

And yes, early treatment evolved. That’s called science confronting a novel pathogen. If your standard is “medicine must be omniscient on day one,” then you are not arguing medicine — you are arguing for clairvoyance.

The hospitals were full.
The ICUs were full.
Temporary morgues were deployed.
Excess mortality surged in waves that matched viral spread across continents.

You may dislike public health decisions.
You may resent mandates.
But denying the scale of mortality requires denying measurable reality.

And measurable reality does not bend to ideology.

[Matthew Herper @matthewherper]

Here the Moderna flu data the FDA refused to review.

This is the most important slide from the company's study of its experimental flu vaccine-- exactly the data FDA said it wouldn't even review.

And below is a thread of relevant slides from that presentation and links to other relevant studies I wanted to bookmark. (I'm a reporter who covers this stuff.)🧵1/14

[Eric Topol @EricTopol]

Why this #SuperBowl2026 ad is so misleading and bad
gift link https://t.co/EldV5GCxRq

[Eric Topol @EricTopol]

"We should be skeptical of any people who sell themselves as singularly capable of giving health advice on the internet and should always follow the money and connections where they lead."
gift link
https://t.co/9oD62gxdC1

[Craig H Warden, PhD @cwarden19]

@DrJBhattacharya Would you care to rank scientific information quality? For example: YouTube Video, Statement on ""X", podcast, book, peer reviewed paper, replicated peer reviewed paper?

[Craig H Warden, PhD @cwarden19]

@jsm2334 @redpilldispensr Chemistry matters. Mercury ≠ thimerisol. It's like saying we should avoid NaCl because Chlorine gas is lethal. In chemistry the actual chemical form matters.

[Simon Maechling @simonmaechling]

A recurring idea is that modern life is poisoning us - chemicals, vaccines, industry are the primary drivers of poor health and reduced lifespan.

This depends on one assumption: longevity is mostly environmental, not biological.

I want to that challenge that assumption: 1/

[Craig H Warden, PhD @cwarden19]

@ChrisDJackson Classic TACO moves for Greenland.

[Craig H Warden, PhD @cwarden19]

@elonmusk Homicide rates are still lower in England and much lower in Japan. Using radically different approaches than El Salvador. Conclusion -- single data points form single countries prove nothing. Yet another example of poor data analytics on "X".

[Craig H Warden, PhD @cwarden19]

@ArseGrammatica I think it's currently about 47 days.

[Craig H Warden, PhD @cwarden19]

@elonmusk I'm in favor. It's not clear that Republicans will gain partisan advantage. What would be more interesting is real ID for posts on "X", and voting on US issues restricted to people living in the US or even citizens...

[Craig H Warden, PhD @cwarden19]

@elonmusk 46% of Hispanics voted for Donald Trump in 2024. Do you think that the number of Hispanics voting Republican will increase or decrease in 2026 and 28?

[Craig H Warden, PhD @cwarden19]

@elonmusk This is why "X" is weak -- no fact checking. How about a graph showing number of voters routinely removed from voting rolls in all states over the last 5 - 10 years? 100% chance there are lots from red states.

[Craig H Warden, PhD @cwarden19]

@ArseGrammatica My theory is that this is about eliminating all environmental controls on mining in Greenland. Since that is only something that can be done by government, then US would need to be the government. Nothing else makes sense.