21 y/o Bio & Neuro, B.S. Student • Host of the The Signal Podcast •
Florida
Joined September 2019
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I had the incredible pleasure of being on the Thresh Architects Podcast and having a wonderful conversation with Zach.
All things LIGHT! We covered it ALL!!
Go give this episode a listen, it was one of my favorite podcasts I’ve been on!
The Invisible Light Disease That's Plaguing Our Homes | Jonathan Jarecki youtu.be/AFb_VKtq_zw?is=0N5y…
Jonathan Jarecki retweeted
Today on TSEE, @niroshajmurugan and I examine how light might serve not only as a biological signal that our cells release, but also a signal that our cells can receive and respond to in ways relevant to health.
Chemical reactions within our cells release tiny amounts of light that could potentially provide insight into a cell's energetic state. In addition to reading these cellular signals, interventions that deliver low-energy light are being investigated for their potential effects on biological activity—particularly in mitochondria.
Using light to change biology is called photobiomodulation. Low-energy light can be delivered to biology using different devices. In this piece, we discuss a review article focused on how low-power lasers and light-emitting diodes (LEDs) may influence the dynamics of mitochondrial fusion and fission.
Studying how light changes mitochondrial behavior could provide useful information about how our cells adapt and repair in response to stress and damage. Other work also shows how photobiomodulation is set to lead to new therapeutic approaches.
tseenergy.substack.com/p/exp…
Fantastic episode. Love when Jack and Rick come together. The dynamic duo
NEW EPISODE: "Medicine is an art and a science. When I tell you my beliefs, what am I doing? It's much like the art side of medicine." -Dr. Jack Kruse
0:00 Jack Kruse
2:07 The Earth’s Weakening Magnetic Field
21:48 Where Magnetism Is Strongest
28:28 Carbonated & Deuterium-Depleted Water
35:58 Grounding & Building a Healthy Home
47:03 His Origin Story: Leptin & Getting Swatted
59:41 Mapping the Magnetic Field & Eating Local
1:06:27 Is Exercise a Waste of Time?
1:11:56 Melanin, Collagen & EMF at Home
1:36:12 The Leptin Reset, Blue Light & Supplements
1:49:31 Medicine’s Choke Points & the Planet’s Future
Jonathan Jarecki retweeted
Ready for sunrises before 8am? Standard Time returns one week from today, meaning easier mornings, safer roads, and better health!
The benefits of sunlight far outweigh the production of vitamin D. And in fact, the reductionistic framework that vitamin D supplementation can replace sunlight is an unwarranted belief.
With the piling research of the benefits of sunlight, it is far more reasonable to view vitamin D, simply as a proxy of how much sun exposure somebody gets.
I had the pleasure of sitting down with Dr. Roger Seheult, MD, is a physician quadruple board-certified in internal medicine, pulmonary disease, critical care medicine, and sleep medicine, an Associate Clinical Professor at the University of California, Riverside School of Medicine, an Assistant Clinical Professor at Loma Linda University, and the co-founder of MedCram.
This is a clip from my episode with Dr. Roger Seheult on The Signal podcast
You can listen to the full episode on all major streaming platforms by going to Jonathanjarecki.com/podcast (link in bio)
#science #sunlight #health #medicine #mitochondria
Wrong. Permanent standard time is good for American health.
America wants permanent daylight saving time.
My bipartisan Sunshine Protection Act passed the House to deliver that for our families, small businesses and our health. It’s time to lock the clock.
Readers added context they thought people might want to know
Studies show the opposite of what Congressman Buchanan claims. DST reduces sleep duration and quality. That reduces productivity and wages. And it harms both mental and physical health. Permanent DST would increase these harms. Permanent Standard Time instead is best.
econpapers.repec.org/paper/wilwilec…
aasm.org/aasm-opposes-s…
sciencedirect.com/science/articl…
thensf.org/wp-content/upl…
The glymphatic system is how the brain clears waste. Cerebrospinal fluid flows in along channels surrounding arteries, mixes with the fluid between brain cells, picks up metabolic waste like amyloid-beta and tau, and drains out along veins into the lymphatic system. Heartbeat, breathing, and rhythmic pulsing of blood vessels help push it through.
A key player is aquaporin-4, a water channel packed onto the astrocyte “endfeet” that wrap blood vessels, which helps fluid move quickly between compartments. The system works best during deep sleep, when the space between brain cells expands and lowered norepinephrine helps drive fluid flow. The details are still debated, but the core idea that sleep supports brain waste clearance is well supported.
@SfNtweets
#neuroscience #brain #science #neuroanatomy
As part of my Behavioral Neuroscience class (@davidsoncollege) I will be communicating some of the latest research in neuroscience and educating on some neuro basics contained in the A THREAD ON @x
X: @jonathanjarecki
#PSY303DC
Benefits of sunlight have now been validated in a United States Cohort.
Get more sunlight people!!
medrxiv.org/content/10.64898…
Jonathan Jarecki retweeted
A radical new theory about energy and mitochondria could explain chronic disease and aging.
sciam.com/article/the-provoc…
Jonathan Jarecki retweeted
I've been writing the ENERGY book for more than a year—with all my early morning time, weekends, and a few productive writing retreats. This book weaves together the science of energy and our research on mitochondria with stories of lived experiences, including some of our own and many others. I also share practical evidence-based guidance on how to apply energetic principles into our lives: ways to live a scientifically-informed, energetically-inspired life.
The full draft is now with the publisher. The book should launch early 2028. Translated in nine languages so far. Can't wait to share this with everyone!
I am grateful for the amazing people who are working on bringing this book to life and sharing it with the world. More here: energy-book.com/
Jonathan Jarecki retweeted
Today on TSEE, we share a personal story that means a lot to me. During my early years as a scientist, I had a chance to work with Doug Wallace, a pioneer considered by many as the father of mitochondrial genetics.
Doug and his team have made discoveries that have transformed our understanding of human evolution and mitochondrial diseases. But his scientific journey wasn't all smooth sailing. Some of the ideas he pursued were met with skepticism and resistance. Ever since my time in his lab, I had several questions I'd never had the chance to ask him.
Last month, @niroshajmurugan and I took the train from NYC to Philadelphia to visit Doug. We talked about his groundbreaking discoveries, the challenges of pursuing unconventional ideas, his vision for the future of energy biology, and his unwavering passion for exploring new ideas.
Nirosha and I are delighted to share a little piece of a precious person with you today. We hope you find the wisdom here valuable.
tseenergy.substack.com/p/exp…
THE CONTRASTING EFFECTS OF BLUE AND RED/NIR LIGHT ON THE MITOCHONDRIA.
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Our modern build environment is dominated by short-wavelength light from LEDs and fluorescent lighting. This can have deleterious effects on the mitochondria. Adding to this effect is the lack of long-wavelength light from sources like the sun and incandescent lighting bulbs.
These long light wavelengths have a beneficial effect on mitochondria function and overall human health. The lack of them in our modern built environment, seems to be impacting public health in a delirious fashion.
Four recent papers to read:
1. Barrett, E.M., Jeffery, G. LED lighting (350-650nm) undermines human visual performance unless supplemented by wider spectra (400-1500nm+) like daylight. Sci Rep 16, 3061 (2026). doi.org/10.1038/s41598-026-3…
2. Jeffery, G., Fosbury, R., Barrett, E. et al. Longer wavelengths in sunlight pass through the human body and have a systemic impact which improves vision. Sci Rep 15, 24435 (2025). doi.org/10.1038/s41598-025-0…
3. Metabolism in the Solar Photon Field A physical framework for photon-assisted modulation of mitochondrial electron-transfer kinetics
Robert A. E. Fosbury, Roger Seheult, Scott Zimmerman, Glen Jeffery
bioRxiv 2026.08.11.744135; doi: doi.org/10.64898/2026.08.11.…
4. Importance of the Unseen: Near-Infrared Light Regulates Human Glucose Levels in the Built Environment
Khorshid Meihami, Jemima Unwin Teji, Edward Barrett, Glen Jeffery
bioRxiv 2026.09.06.747571; doi: doi.org/10.64898/2026.09.06.…
As part of my Behavioral Neuroscience class @DavidsonNeuro (@DavidsonCollege) I will be communicating some of the latest research in neuroscience and educating on some neuro basics contained in the following thread 🧵🧵🧵
Let's start off with a paper that was published 5 days ago in Nature Neuroscience.
The brain seems to be made up of two distinct organs. It turns out that one of the reasons researchers could not grow hindbrain neurons in culture is that the progenitor cells used to grow them were the wrong starting cell. This paper discovered that the hindbrain comes from a totally separate, early progenitor cell population.
With out new capacity to grow hindbrain neurons in culture, we can now study diseases that stem from this area (organ) of the brain including spinal muscular atrophy (SMA) and ALS.
Nature Paper: nature.com/articles/s41593-0…
Stanford Article: med.stanford.edu/news/all-ne…
#PSY303DC
Video description of the four lobes of the brain
#PSY303DC
FOUR MAIN LOBES OF THE CORTEX 🧠
The most anterior low of the brain is the frontal lobe which extends from the central circus to the anterior limit of the brain. The frontal lobe house is the primary motor cortex to control fine motor movements. The prefrontal cortex is important for working memory, delayed response tasks, and planning of appropriate behavior based on the situation.
Laterally on each hemisphere of the brain, sits the temporal lobe. This lobe is essential for understanding and processing spoken language and auditory information that enters through the ear. Damage to the temporal lobe can lead to Klüver-Bucy syndrome, where individuals express hyperorality and hypersexuality.
at the posterior end of the cortex lies the occipital lobe which contains the primary visual cortex. because of cross representation damage in one hemisphere of the occipital lobe can cause blindness in the opposite visual field.
Between the occipital lobe and the frontal lobe is the parietal lobe which contains the primary somatosensory cortex to receive touch sensation, muscle stretch position information. Within the post essential gyrus, there are different bands of cells, including ones that receive light touch information and ones that receive deep pressure information.
#science #neuroscience #brain #neurosciencestudent
FOUR MAIN LOBES OF THE CORTEX 🧠
The most anterior low of the brain is the frontal lobe which extends from the central circus to the anterior limit of the brain. The frontal lobe house is the primary motor cortex to control fine motor movements. The prefrontal cortex is important for working memory, delayed response tasks, and planning of appropriate behavior based on the situation.
Laterally on each hemisphere of the brain, sits the temporal lobe. This lobe is essential for understanding and processing spoken language and auditory information that enters through the ear. Damage to the temporal lobe can lead to Klüver-Bucy syndrome, where individuals express hyperorality and hypersexuality.
at the posterior end of the cortex lies the occipital lobe which contains the primary visual cortex. because of cross representation damage in one hemisphere of the occipital lobe can cause blindness in the opposite visual field.
Between the occipital lobe and the frontal lobe is the parietal lobe which contains the primary somatosensory cortex to receive touch sensation, muscle stretch position information. Within the post essential gyrus, there are different bands of cells, including ones that receive light touch information and ones that receive deep pressure information.
#science #neuroscience #brain #neurosciencestudent