**Link to Study**
Total and different types of olive oil consumption, gut microbiota, and cognitive function changes in older adults
https://doi.org/10.1186/s40168-025-02306-4
**The Core Issue**
As dementia cases climb globally, researchers are hunting for simple dietary levers that protect aging brains. Virgin olive oil has long been praised as a Mediterranean diet staple, but whether it works through the gut has never been directly tested in humans until now.
**The Finding**
A two-year prospective study of 656 older adults found that higher virgin olive oil (VOO) intake tracked with better preserved cognition across global thinking, executive function, attention, and language skills. Every additional 10g per day of VOO correlated positively with those cognitive outcomes. Crucially, refined olive oil pointed in the opposite direction: more of it meant lower microbial diversity and faster cognitive decline.
**Why It Matters**
This is the first human study to directly examine how olive oil interacts with gut bacteria to influence brain health. The lead author calls it a potential "olive oil–gut–brain axis." The quality of the fat matters just as much as how much you use. Switching from refined to virgin or extra virgin is a low-cost, accessible move that may genuinely protect your brain over time.
**Limitations of Study**
This was an observational cohort, so causation cannot be confirmed. The participants were all overweight or obese older adults with metabolic syndrome, so the findings may not generalize broadly. The researchers are planning metagenomics and metabolomics work to pin down the biological mechanisms.
**Conflicting Interests**
None disclosed in the source material.
**Interesting Statistics**
- 656 participants aged 55 to 75, all cognitively healthy at baseline but at high risk for decline
- Each 10g per day increase in VOO intake was positively associated with changes in global cognition, executive function, attention, and language
- Higher VOO intake correlated with greater alpha diversity, a measure of how resilient and varied a gut ecosystem is
- The bacterium Adlercreutzia, a polyphenol (plant compound) metabolizer, statistically mediated the link between VOO and better cognitive performance
- Akkermansia was inversely tied to VOO consumption and negatively associated with changes in attention
- Follow-up period was two years, with a validated neuropsychological battery used to measure cognitive change
**Useful Takeaways**
- Choose virgin or extra virgin olive oil over refined versions. Industrial processing strips the polyphenols that appear to drive the gut and brain benefits.
- The gut microbiome is a plausible mechanism, not just a side note. Feeding the right bacteria with the right fats may be part of how diet protects cognition.
- This matters most for people already in higher-risk groups, such as those with metabolic syndrome or excess weight.
**TL;DR**
Virgin olive oil feeds gut bacteria that help preserve your brain, while refined olive oil does the opposite, and this is the first human study to show the connection directly.
Excerpt from the first part of the article:
New research reveals how harboring resentment can undermine our health, leading to chronic stress, inflammation, and many serious diseases (Aghakhani and colleagues, 2026). Yet research also shows how forgiveness can relieve these effects, leading to greater peace of mind, recovery, and renewal (Almeida and Cunha, 2025).
The negative effects of resentment. A recent study on resentment and forgiveness in older adults (Almeida and Cunha, 2025) found that when painful feelings are not processed, we may feel lasting resentment, continued pain, dysfunction, and emotional injury. Resentment from old hurtful experiences can stay with us for years, buried deep in our memory. What the researchers call “lasting, ruinous, painful resentment” can produce a range of emotions from aggression to apathy that can block us from meeting our fundamental needs and undermine our relationships (Almeida and Cunha, p. 1191). We can feel unsafe, victimized, caught up in chronic survival mode as our amygdala, the brain’s alarm center, continually sends messages of threat throughout our bodies (Van Der Kolk, 2015). Then, if we’re triggered by some current event, active resentment and anger can emerge, further compromising our immune systems (vanOyen Witvliet and colleagues, 2001).
**Link to Study**
Systemic proteome adaptations to 7-day complete caloric restriction in humans
https://www.nature.com/articles/s42255-024-01008-9
**The Core Issue**
Most fasting research stops at "your body switches to burning fat." This study goes much deeper, tracking nearly 3,000 proteins in real people over a full seven-day water-only fast to map what's actually happening inside the body at a molecular level.
**The Finding**
More than 1,000 plasma proteins changed significantly during the fast, and the shifts were almost identical across every participant, pointing to a coordinated biological program rather than random variation. The big surprise: meaningful changes only kicked in after day three, and they reached all the way to brain-related proteins, including tenascin-R, a protein that forms part of the structural scaffolding supporting neurons.
**Why It Matters**
Fasting has been used for centuries to manage conditions like epilepsy and rheumatoid arthritis, and this study starts to explain why on a molecular level. Two specific proteins flagged in the data, SWAP70 and HYOU1, show potential links to protection against rheumatoid arthritis and cardiovascular disease respectively. As lead researcher Claudia Langenberg put it: "For the first time, we're able to see what's happening on a molecular level across the body when we fast."
**Limitations of Study**
Only 12 healthy volunteers participated, so these findings need to be replicated at scale. The researchers are also clear: prolonged fasting carries real risks and should never be attempted without medical supervision.
**Interesting Statistics**
- Over one-third of the roughly 3,000 proteins measured changed significantly during the fast
- The body only begins its deep molecular response around day three
- Participants lost an average of 5.7 kg total during the seven days
- That loss broke down to about 3.6 kg of lean mass and 1.6 kg of fat mass
- After refeeding, fat loss largely stuck, while lean mass was almost fully recovered
- Body weight was still about 3.1 kg below baseline three days after eating resumed
- Nine distinct protein response patterns were identified across the fasting period
**Useful Takeaways**
The researchers see this as a roadmap for developing therapies that mimic fasting's effects for patients who are too sick to fast. If scientists can isolate which protein changes drive the benefits, they may be able to deliver those effects through drugs or targeted interventions instead.
**TL;DR**
A seven-day water-only fast triggers a coordinated molecular overhaul affecting more than 1,000 proteins across the body, including the brain, and the science now shows this response doesn't even begin until after day three.
New patch kills cancer cells without damaging healthy tissue.
Melanoma is an aggressive form of skin cancer typically requiring surgical excision, which can be invasive and lead to scarring.
Researchers have now developed a promising alternative: a stretchy, breathable skin patch that uses heat to deliver a targeted strike against cancer cells. By embedding copper(II) oxide into laser-etched graphene and a soft silicone polymer, the team created a patch that remains inert until activated by a low-power laser. Once warmed to 108 degrees Fahrenheit, the patch releases copper ions that penetrate the skin to induce oxidative stress specifically within the tumor.
In animal trials, this "heat-and-release" technology proved incredibly effective, reducing melanoma lesions by 97% in just ten days without damaging surrounding healthy tissue. Beyond shrinking the primary tumor, the patch appears to trigger an immune response that prevents cancer cells from migrating to other parts of the body—a process known as metastasis. Because the device is reusable, easy to apply, and avoids metal accumulation in the organs, it represents a major leap toward safer, more efficient, and non-invasive skin cancer therapies for humans.
This breakthrough enables more precise control over gene activity by targeting how cellular instructions are used, not just rewriting DNA itself. It opens the door to safer, more flexible ways to diagnose and treat disease by fine-tuning biological processes in real time.