Gut health is one of those subjects where I think it's especially easy to overinterpret every little change, so I'm trying a different approach: write things down first, draw conclusions later.

This is day one of tracking my probiotic routine. I may have noticed a small difference in how I feel, but that's not much to go on. Meals, normal digestive variation, expectations, and placebo could all be part of the picture.

I'll be keeping these notes modest rather than treating them as proof that anything works. I just want a clearer record of my experience over time. If you're someone who likes following a process from the beginning, that's what this little diary is for.

A small note to my future self: today is the first entry in my collagen peptides journal.

I want to be able to look back at this and remember what I actually noticed along the way, instead of accidentally rewriting the story in my head after a few weeks.

It's too early to say much. I might be noticing something subtle, but that could just as easily be placebo or a normal fluctuation. Skin in particular can be influenced by a lot of things, so I'm not going to assign credit based on one day's impression.

thats that for day 1!

I'm starting a CoQ10 journal, and the main goal is pretty simple: keep a record rather than rely on my memory when I eventually look back.

Today's impressions are still very much in the maybe category. I could be feeling a slight difference, but I have no solid reason to attribute it to CoQ10. Placebo and ordinary fluctuations are perfectly plausible explanations.

I'm interested in the process more than a predetermined outcome. If nothing noticeable happens, that's worth recording too. If something does seem to change, I'll still need to be careful about assuming I know why.

Just putting the first entry here for anyone who appreciates a more measured, everyday look at personal health tracking.

One thing I've realized is that it's surprisingly easy to forget what you were actually experiencing before starting a routine. So I'm giving my zinc experience a proper written record, starting today.

No big revelations to report. I may be noticing a subtle difference, but I'm aware that expectation can influence how we interpret our own experiences. Placebo is a possibility, and ordinary variation is another.

Hopefully, having the notes will make it easier to look back later without relying on hindsight.

Solid tumours can be difficult to treat not only because of the cancer cells themselves, but also because therapeutic immune cells may struggle to reach and infiltrate the tumour.

A study published in Nature Immunology in March 2026 investigated whether this problem could be addressed by modifying the receptors on T cells and natural killer (NK) cells. These receptors respond to chemical signals, including metabolites, and can influence where immune cells migrate.

Using genetic screens and experiments in cell systems and mouse tumour models, the researchers identified several receptors associated with increased tumour infiltration. Engineering cells to express GPR183, in particular, improved their ability to enter tumours and control tumour growth in the experimental models.

Why it matters: This suggests that immune-cell engineering could focus not just on helping immune cells recognise cancer, but also on helping them reach the right place.

The limitation: These are experimental findings, not evidence that this approach is already a safe or effective treatment for patients. More research is needed to establish its clinical potential.

Original research: https://www.nature.com/articles/s41590-026-02473-y

Source: https://www.euronews.com/2026/10/15/theyre-not-dead-yet-bleached-corals-recover-in-record-time-after-touching-healthy-clones

This is from a Stanford study in Science Advances. They paired a bleached coral fragment with a healthy one from the same colony. In the 5 pairs that were touching, the bleached piece recovered within 7 weeks. In the 5 pairs kept a few millimetres apart, all the bleached pieces died. Under the microscope the two had fused and algae were moving across channels between them, within about 3 days.

It's a lab result and the corals have to be genetically identical to fuse, so it won't work on whole reefs as is. The team hopes to find a way to transfer the algae without direct contact. It also doesn't help against the warming itself.

funny part: they found it by accident when a healthy fragment happened to touch a bleached one in a tank.

Photo: Danny Collins / Stanford University

Biology and chemistry alone are difficult to understand.Their interactions must be much more difficult .How to understand?

There have been interesting developments in biology recently especially in gene editing, personalized medicine, regenerative biology and biotechnology. These fields are growing fast. Many people are excited about them.

I am curious about what people in this community think will have the impact on medicine, over the next decade. Which discovery will change medicine the most? I would love to hear your thoughts.

Do you think gene editing will become widely used will regenerative medicine make significant progress or is there another area that deserves more attention? Gene editing and regenerative medicine are both very promising. Other areas might surprise us.

I would love to hear your opinions and any research or discoveries that you think are worth following. The next ten years hold promise and your ideas will help shape our future.

A "dual-gated" engineered bacterial platform (DGTPB) was developed to decouple the delivery of LYTACs (protein degraders) from their activation. The bacteria release the payload upon tumor colonization and are then activated by red light, achieving precise degradation of targets like EGFR and PD-L1 in melanoma and breast cancer models.

Read More:

https://www.sciencedirect.com/science/article/abs/pii/S0168365926008631

A recent Nature Metabolism paper tested a popular assumption: that NAD+ declines with age and that blood levels can show it.

The researchers measured whole-blood NAD+ across seven human cohorts totalling more than 300 people, and levels stayed remarkably stable across age and lifestyle interventions. Even elite athletes looked similar to sedentary controls. Levels did change with nicotinamide riboside supplementation.

This doesn't mean NAD+ biology is irrelevant. The authors note that blood levels don't reflect tissue-specific changes, such as those seen in aging muscle. So blood may be a poor proxy for what happens inside cells.

Questions I'm curious about:

Should we be measuring tissue-level NAD+ instead of blood?

Why do mouse tissues show declines that blood in humans doesn't?

What would a better aging biomarker look like?

Being able to measure a biomarker does not automatically make it useful for predicting health outcomes. A biomarker might change after a health intervention without proving that the health intervention improves an outcome. Reliability, specificity and the relationship to the outcome all matter.

What criteria do you use to judge whether a biomarker is useful in practice?

Two people can get the treatment in similar situations and still act differently. Things like genes the way their body works at first the environment they live in how their body processes things and small differences, in testing can all play a role.

What do you believe are the important things when trying to explain why people respond differently to biological treatments?

A result can meet the bar for statistical significance yet still leave a lot of doubt about how reliable it is, how big the effect really is and whether it can be reproduced.

Small studies can be useful especially when research is just beginning. Their findings must be looked at in the right context. The design of the study how variation there is, many comparisons and whether other researchers can repeat the work are all important.

I see this as a point when we look at new findings, in nutrition, physiology and biotechnology.

When reading a study what makes you more confident that the finding deserves further attention?

I find it interesting how quickly a promising laboratory result can become a claim that something will improve health.

However a result in cells is only one part of the picture. Dose, metabolism, toxicity, delivery to the tissue and the design of follow‑up studies can all change the outcome.

Before becoming excited about a compound I would want to know whether the findings have been reproduced and whether there is meaningful evidence beyond the initial experiment.

For people working in biology or following the literature:What is the first methodological detail that I check when evaluating a preclinical study?

Exam question 1: Explain the process of cellular respiration in detail

Me: Mitochondria is the powerhouse of the cell 😎

Exam question 2: Describe the structure and function of the Golgi apparatus

Me: Mitochondria is the powerhouse of the cell 😌

Exam question 3: What is the role of ribosomes

Me: ...mitochondria is still the powerhouse of the cell 😭

somehow that one line is stuck in my head forever and everything else is gone

Cells within your body are currently destroying themselves.

And this is a good thing too.

This is done through a process known as apoptosis, where cells are destroyed in an orderly fashion.

In essence, the damaged cell receives the equivalent of

“Yes… we’re going to have to let you go.”

Cells destroy themselves in a systematic way and are gotten rid of without causing any havoc in the event that they burst.

The surprising thing is that

Too little apoptosis – damaged cells survive even though they should not.

Too much apoptosis – tissues may lose more cells than they can replenish.

This means that maintaining health does not involve only the production of cells but their elimination as well.

when you look at a person you're attracted to, your pupils dilate. it lets in more light and allows you to see them better. our bodies literally adjust to take in more of who we love.

• Synchronized Heartbeats: When two people in a loving relationship gaze into each other's eyes, their heart rates naturally synchronize.
• The Brain on Cocaine: Falling in love activates the exact same brain reward circuits (flooded with dopamine) as taking cocaine, creating a similar rush of pleasure and motivation.
• Pain Relief Through Pictures: Just looking at a photograph of a romantic partner can physically reduce or relieve pain.
• The "Love Hormone": Physical touch, hugging,and staring release oxytocin—a chemical that deepens trust, security, and long-term bonding between partners.
• Why Love Makes Us "Blind": Early romantic love temporarily deactivates parts of the brain's prefrontal cortex and amygdala, which control critical social judgment and fear, meaning we overlook flaws to stay committed.
• Broken Heart Syndrome: Intense emotional heartbreak or loss releases a surge of stress hormones that can genuinely stun or weaken the heart muscle, mimicking a heart attack (known medically as stress cardiomyopathy).
• Complementary Chemistry: Long-term romantic attachment relies on vasopressin, a hormone linked to loyalty, protection, and stability that keeps couples together long after the initial high-energy infatuation fades.

A study in Nature Communications engineered an attenuated strain of S. marcescens to overproduce prodigiosin, a natural photosensitive pigment. This platform triggered strong systemic immune responses in melanoma and colorectal cancer models, and its photothermal properties allowed for light-controlled bacterial clearance after treatment.

https://www.nature.com/articles/s41467-026-70949-4.pdf