Dr Maria Cronyn

01/10/2026

MS may not be genetic bad luck after all.
A landmark study of 10 million military personnel confirmed Epstein-Barr virus is the leading cause of Multiple Sclerosis. This shifts everything. A vaccine for this common virus could potentially eradicate MS entirely. One virus. One target. A disease erased.

Shared for informational purposes only.
Source: Science

01/10/2026

Interesting thought and worth supplementing to improve memory.

Harvard researchers discovered that a natural depletion of lithium in the brain is one of the earliest triggers for the neurodegeneration seen in Alzheimer's. This paradigm shift suggests that maintaining trace levels of this element acts as a shield, preventing initial damage before plaque forms. A simple mineral deficiency might be the spark that burns memory.

Shared for informational purposes only.
Source: Nature

01/07/2026

Ooooo watch this space

"While the personal meaning of a tattoo may be obvious, the biological consequences are far less visible."
https://www.sciencealert.com/tattoos-affect-your-immune-system-in-ways-were-only-beginning-to-understand

01/05/2026

I have primary care, physician, friends, who laughed at me about me, giving the risk and warnings to patients for years and years.

The FDA just approved a label change for Depo-Provera, a form of birth control also known as "the shot." The updated label includes a warning about the risk of developing meningioma, a type of tumor that forms in one of the three membrane layers that cover and protect your brain. Whether you use Depo-Provera for birth control or are considering it, it's understandable to have questions.

01/05/2026

I can’t count how many times I have said to everyone take a be complex twice a day it will prevent so many problems and it will cure so many issues you already have

Vitamin B12 deficiency is often framed as a niche nutritional issue, yet population-scale data suggest its clinical burden may be far larger, and rising.

A 2026 analysis (doi: 10.3389/fnut.2025.1701661) of Brazil’s national health system examined 84 million vitamin B12 laboratory tests collected between 2016 and 2023, linking results with hospitalization records. Over this period, B12-related hospitalizations increased by 32%, spanning neurological, cardiovascular, psychiatric, hematologic, and gastrointestinal conditions, indicating a growing, multisystem healthcare burden despite widespread testing.

Why this matters beyond Brazil: In the U.S. and other high-income countries, average vitamin B12 intake often sits near minimum requirements, particularly among older adults, individuals with impaired absorption, and those using common medications (e.g., metformin, proton pump inhibitors). Supporting evidence from neuroimaging and biomarker studies (PMID: 39927551) shows that functional neurological changes can emerge even when serum B12 levels fall within currently defined “normal” ranges, suggesting that delayed or threshold-based diagnosis may miss clinically meaningful insufficiency.

The Brazilian data likely reflect a broader pattern (not a country-specific anomaly) where vitamin B12 deficiency is detected after downstream complications develop, rather than during earlier, preventable stages.

Limitations: The hospitalization data are specific to Brazil and observational in nature. Hospital records capture severe outcomes and may underestimate subclinical disease. However, the scale and consistency of the signal suggest a probable gap between laboratory sufficiency and functional health protection.

Together, these findings support rethinking vitamin B12 adequacy as a public health issue of early detection and prevention, rather than one defined solely by anemia or late-stage clinical presentation.

01/02/2026

If you’ve ever thought, “I’ve tried everything and I still don’t feel right,” this is for you.

Feeling stuck doesn’t mean you failed. It often means something important hasn’t been addressed yet.

I help people sort that out.

01/02/2026

January is often the hardest month of the year emotionally.

If you’re exhausted from trying therapy, medication, or “doing all the right things” without real relief, you’re not alone.

In many cases, mental health symptoms are being driven by stress physiology, trauma, and hormones interacting together.

I’m offering a limited number of reduced-fee, in-depth consultations in January for people who want clarity and a way forward.

Feel free to DM me.

01/02/2026

Early stress and loss don’t always show up right away.

For many people, they surface later in life as anxiety, mood changes, hormone issues, or feeling constantly on edge.

If this sounds familiar and you’ve never felt fully helped, I work with cases like this.

You can message me privately.

01/02/2026

If therapy or medication hasn’t helped the way you hoped, you’re not broken.

Many mental health symptoms don’t resolve because stress, trauma, and hormones are driving what’s happening in the body.

I work with people who feel stuck and want a clear understanding of why nothing has worked — and what to do next.

You’re welcome to message me privately if this resonates.

01/02/2026

Tinnitus in menopause?

Just when you thought perimenopause couldn’t make you feel any more unhinged, you start hearing things. A ringing, a hum, a buzz, maybe even a whoosh. Whatever the sound, it hijacks your focus, messes with your sleep, and makes you wonder: Have I finally lost it?! You haven’t. But you may have tinnitus. Click the link to read an expert unpack this surprising, buzzworthy symptom: bit.ly/4ayjLcV