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Posts by Dr. Todd Ewing PhD.

Too funny

I swam 500-yard freestyle in high school & can only imagine the pain, fatigue, nausea of 400m butterfly

I now believe all competitive sports typically cause a toxic overdose of physical stress

Nausea & injury being red flags

Optimal dose likely requires non-competitive exercise

2 weeks ago 2 0 1 0

Here's the source article:

Review of Diet & Adolescent Mental Health
www.mdpi.com/2072-6643/17...

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3 weeks ago 6 3 0 0
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Could dietary change support adolescent mental health? New review highlights evidence gaps and future research priorities A study led by researchers at Swansea University suggests that dietary patterns may play a role in adolescent mental health and sets out a detailed research roadmap to better understand this relations...

UK researchers @swanseauni.bsky.social review adolescent #mentalhealth & #diet

www.swansea.ac.uk/press-office...

— healthy diet associates with fewer #depressive symptoms
— poor diet associates with greater #psychological distress
— 19 studies in meta analysis

#health #science #lifestyle 🧪

3 weeks ago 11 3 1 0
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Join Bill Nye in Taking Urgent Action for Science Bill Nye—Science Guy—here. I’m writing on behalf of Union of Concerned Scientists (UCS) with an urgent request for you to take action to help keep science in policymaking in your state. It’s only bee...

Totally agree! Happy to be a new signatory!

sign.moveon.org/petitions/jo...

I believe state governments need to take over ALL health and science investment from the federal government!

We are forever one election away from Republican control of federal government and health & science disaster!

3 weeks ago 0 0 1 0
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Physical activity types, variety, and mortality: results from two prospective cohort studies Objective To examine the associations of long term engagement in individual physical activities and physical activity variety with the risk of death.Design Prospective cohort studies.Setting Nurses' H...

Here's the source:

Physical activity types, variety & mortality
bmjmedicine.bmj.com/content/5/1/...

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3 weeks ago 11 5 0 0
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Exercise variety—not just amount—linked to lower risk of premature mortality | Harvard T.H. Chan School of Public Health Consistently engaging in a variety of types of exercises—from walking to weightlifting to gardening—was associated with a lower risk of premature mortality, even when total physical activity level was...

Researchers @hsph.harvard.edu find new insight to #exercise and #longevity:

— more TOTAL exercise lowers mortality up to 17%
— more VARIETY of exercise lowers mortality up to 19%

hsph.harvard.edu/news/exercis...

#health #science #aging #research 🧪

3 weeks ago 21 8 4 1

My hypothesis:🧪

Red light contains a small fraction of #infrared light which transmits #heat to the skin

Warming tissue would explain the diverse range of effects: lower fluid viscosity, increased blood circulation & increased mitochondrial activity

Hair growth could be increased by warmth too!

4 weeks ago 4 1 0 0
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The surprising science behind red-light therapy — and how it really works People are buying helmets, face masks, vests and beds that emit long-wavelength light. Beneath the hype, there is some interesting biology.

Okay, I'm still not convinced, but I am intrigued...

www.nature.com/articles/d41...

What's your hypothesis on how #redlight #therapy works?

— mitochondria stimulation?
— lower water viscosity?
— increased blood circulation?

(Mine is in the comment below.)

4 weeks ago 4 0 1 0
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Your Thymus and Your Healthspan New landmark studies using AI to determine thymus health and its link to major outcomes

Here's a MUST READ summary of the thymus study by the indefatigable Dr. Eric Topol @erictopol.bsky.social

erictopol.substack.com/p/your-thymu...

#immune #health #longevity #science 🧪

1 month ago 13 4 0 0

BRB, gotta go buy my mom some fruits and vegetables to change how she eats.

1 month ago 2 1 0 0

So grateful to have purchased a plug-in EV hybrid last year

Every day I drive it fully electric, I contribute my drop in the bucket to our energy independence from oil & gas!

1 month ago 1 0 0 0
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Dietary Patterns and Indicators of Cognitive Function This cohort study investigates the association between dietary patterns and subjective cognitive decline and objective cognitive function.

Here's the source article:

Dietary Patterns and Indicators of Cognitive Function

jamanetwork.com/journals/jam...

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1 month ago 10 3 0 0
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Dietary Patterns and Indicators of Cognitive Function Evidence-based analysis of dietary patterns and indicators of cognitive function, with key findings and practical takeaways from the latest research.

Heart-healthy #DASH #diet associates with lower incidence of cognitive decline 🧪

drkumardiscovery.com/posts/dietar...

— 41% lower incidence comparing highest vs. lowest DASH adherence
— higher intake of vegetables & fish
— lower intake of red & processed meats
— further research needed to confirm

1 month ago 20 8 2 0
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Mucosal vaccination in mice provides protection from diverse respiratory threats Traditional vaccines target specific pathogens, limiting their scope against diverse respiratory threats. We describe an intranasal liposomal formulation combining toll-like receptor (TLR) 4 and 7/8 l...

Here's the source article

Mucosal vaccination in mice provides protection from diverse respiratory threats

www.science.org/doi/10.1126/...

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1 month ago 14 4 0 0
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One vaccine may provide broad protection against many respiratory infections and allergens Stanford Medicine researchers and their colleagues invented a new vaccine that protects mice from respiratory viruses, bacteria and allergens — the closest yet to a universal vaccine.

Researchers @stanfordmedicine.bsky.social discover potentially universal #vaccine 🧪

med.stanford.edu/news/all-new...

— mouse study 🐁
— nasal inoculation of TLR4/8 ligands + ovalbumin
— persistent innate immune surveillance
— increases survival against challenges of #virus, #bacteria & #allergen!

1 month ago 50 20 3 4
Glycine alleviates ovarian granulosa cell ferroptosis induced by ERα-mediated internalization of polystyrene microplastics - Communications Biology PS triggers ovarian granulosa cell ferroptosis via ERα-mediated YAP1-ACSL4 signaling, and Gly rescues via PAT1-dependent lysosomal iron metabolism, linking plastic to female reproductive dysfunction a...

Here's a fascinating study of #microplastic toxicity & potential rescue by a dietary #supplement

www.nature.com/articles/s42...

— mouse study🐁
— polystyrene microplastic
— ovarian cell #toxicity via ferroptosis
— dietary #glycine appears to prevent toxic ferroptosis

#environmental #health 🧪

1 month ago 8 3 2 0
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Fascinating article!

Would love to see future exploration of the interplay between thymic adiposity, lipotoxicity, macrophage senescence & downstream neuropathy

Also intrigued by reversal of thymic involution by lifestyle interventions potentially mediated by reversal of lipotoxicity

1 month ago 0 0 0 0

Great Q for your hematologist

Thymus involution reduces T cell maturation (aka T cells cannot learn new skills against new pathogens, so only old skills can be replicated via clonal expansion)

Thymus involution can be reversed by healthy lifestyle interventions!

1 month ago 1 0 0 0

Way too cool

First time I've heard we can directly see our own white blood cells

Likely #neutrophils since they're the predominant leukocytes in our blood and also move faster than the others

But can't wait to hear the opinion of a rheumatologist...🧪

1 month ago 8 1 2 0
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Thymic health consequences in adults - Nature Assessing thymic function and health has highlighted the lifelong importance of the thymus as an organ that could be targeted to improve health outcomes, protect against disease and promote healt...

Source article is here:

Thymic health consequences in adults

www.nature.com/articles/s41...

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1 month ago 11 8 0 0
As you were browsing something about your browser made us think you were a bot. There are a few reasons this might happen:

It's taken forever, but finally researchers are taking the #thymus seriously!

hms.harvard.edu/news/thymus-...

“The thymus

— has been overlooked for decades
— may be a missing piece in explaining
— why people #age differently
— why #cancer treatments fail in some patients"

#immune #science 🧪

1 month ago 22 8 3 0

Too funny!

1 month ago 0 1 0 0
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Lifelong behavioral screen reveals an architecture of vertebrate aging Mapping behavior of individual vertebrate animals across lifespan could provide an unprecedented view into the lifelong process of aging. We created a platform for high-resolution continuous behaviora...

Here's the source article:

Lifelong behavioral screen reveals vertebrate aging
www.science.org/doi/10.1126/...

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1 month ago 8 3 0 0
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Youthful antics predict lifespan — at least for these fish Activity levels and daytime sleepiness can be combined into a ‘behavioural clock’ that predicts whether a fish will have a short life or a long one.

Laboratory fish confirm the #longevity effects of #lifestyle

www.nature.com/articles/d41...

— sedentary behavior vs HIIT
— daytime napping vs circadian rhythm
— calorie/protein restriction vs over-nutrition

#health #science 🧪

1 month ago 44 10 4 1
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Totally agree!

Human space exploration is becoming increasingly ludicrous given the continuing neglect of the toxicity of space radiation outside the protective magnetic field of Earth

The orbiting international space station has been a con-job on this phenomenon

1 month ago 1 0 1 0

Yes, MAGA and its stochastic terror is definitely aging us!

1 month ago 0 0 0 0

Hmm...

So AI-generated text can be obfuscated by my language corruption technique?

I love it!

Another challenge for the AI community to address!

1 month ago 1 0 0 0
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Negative social ties as emerging risk factors for accelerated aging, inflammation, and multimorbidity | PNAS Negative social ties, or “hasslers,” are pervasive yet understudied components of social networks that may accelerate biological aging and morbidit...

Here's the source article

Negative social risk factors for accelerated aging, #inflammation, multimorbidity

www.pnas.org/doi/full/10....

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1 month ago 8 4 0 0
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That Stressful Person in Your Life Might Be Aging You Faster, Study Finds MONDAY, March 9, 2026 (HealthDay News) — Spending time with someone who constantly causes problems may do more than just ruin your mood. Over time, those s

Stressful relationships may speed up biological aging

www.healthday.com/health-news/...

— Each difficult person may raise #aging pace by about 1.5%
— Supportive relationships can help protect your #health

credit to @healthday.bsky.social

#longevity #lifestyle #science 🧪

1 month ago 11 2 3 1

Way, way too funny!

The grammatical structure is reminiscent of one of my favorite language corruption techniques:

— auto-translate from English to Chinese
— translate back to English again

1 month ago 1 0 1 0