Blood-Brain Barrier Breach Blamed For Brain-Fog
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Move Over, Leaky Gut. Now It’s A Leaky Brain.
…which is not a headline that promises good news, and indeed, the only good news about this currently is “now we know another thing that’s happening, and thus can work towards a treatment for it”.
Back in February (most popular media outlets did not rush to publish this, as it rather goes against the narrative of “remember when COVID was a thing?” as though the numbers haven’t risen since the state of emergency was declared over), a team of Irish researchers made a discovery:
❝For the first time, we have been able to show that leaky blood vessels in the human brain, in tandem with a hyperactive immune system may be the key drivers of brain fog associated with long covid❞
~ Dr. Matthew Campbell (one of the researchers)
Let’s break that down a little, borrowing some context from the paper itself:
- the leaky blood vessels are breaching the blood-brain-barrier
- that’s a big deal, because that barrier is our only filter between our brain and Things That Definitely Should Not Go In The Brain™
- a hyperactive immune system can also be described as chronic inflammation
- in this case, that includes chronic neuroinflammation which, yes, is also a major driver of dementia
You may be wondering what COVID has to do with this, and well:
- these blood-brain-barrier breaches were very significantly associated (in lay terms: correlated, but correlated is only really used as an absolute in write-ups) with either acute COVID infection, or Long Covid.
- checking this in vitro, exposure of brain endothelial cells to serum from patients with Long Covid induced the same expression of inflammatory markers.
How important is this?
As another researcher (not to mention: professor of neurology and head of the school of medicine at Trinity) put it:
❝The findings will now likely change the landscape of how we understand and treat post-viral neurological conditions.
It also confirms that the neurological symptoms of long covid are measurable with real and demonstrable metabolic and vascular changes in the brain.❞
~ Dr. Colin Doherty (see mini-bio above)
You can read a pop-science article about this here:
Irish researchers discover underlying cause of “brain fog” linked with long covid
…and you can read the paper in full here:
Want to stay safe?
Beyond the obvious “get protected when offered boosters/updates” (see also: The Truth About Vaccines), other good practices include the same things most people were doing when the pandemic was big news, especially avoiding enclosed densely-populated places, washing hands frequently, and looking after your immune system. For that latter, see also:
Beyond Supplements: The Real Immune-Boosters!
Take care!
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The End of Heart Disease – by Dr. Joel Fuhrman
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We’ve previously reviewed another of Dr. Fuhrman’s books, “Eat To Live”, and this time, he’s focusing specifically on preventing/reversing heart disease.
Dr. Fuhrman takes the stance that our food can either kill or heal us, and we get to choose which. As such, nutrition is central to his heart-healthy plan; he mostly leaves matters of exercise, sleep, etc to other sources.
His dietary approach is mostly uncontroversial: for example, advices include: enjoy nutritionally dense foods, skip processed foods, eat at least mostly plants, skip the added salt. A slightly more controversial aspect is that he advocates for avoiding cooking oils, including the healthiest oils, including olive and avocado, which are by current scientific consensus considered heart-healthy in moderation. As in, not even just heart-neutral, but rather, they actively improve triglycerides.
He compares different cardioprotective diets, and while he’s not unbiased, he does provide 40 pages of scholarly references, so we may understand that at the very least, his approach is sound.
There are also recipes—94 pages of them—for any who might wonder “how do I cook without…?” and some ingredient he would rather you omit.
The style is information-dense (and this is a 448-page book) but still very readable.
Bottom line: if you’re serious about improving your heart health, this book can help a lot with that.
Click here to check out The End Of Heart Disease, and end heart disease for yourself!
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What’s Lurking In Your Household Air?
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As individuals, we can’t do much about the outside air. We can try to spend more time in green spaces* and away from traffic, and we can wear face-masks—as was popular in Tokyo and other such large cities long before the pandemic struck.
*The well-known mental health benefits aside (and contrary to British politician Amber Rudd’s famous assertion in a televised political debate that “clean air doesn’t grow on trees”), clean air comes mostly from trees—their natural process of respiration scrubs not only carbon dioxide, but also pollutants, from the air before releasing oxygen without the pollutants. Neat!
See also this study: Site new care homes near trees and away from busy roads to protect residents’ lungs
We are fortunate to be living in a world where most of us in industrialized countries can exercise a great degree of control over our home’s climate. But, what to do with all that power?
Temperature
Let’s start with the basics. Outside temperature may vary, but you probably have heating and air conditioning. There’s a simple answer here; the optimal temperature for human comfort and wellbeing is 20℃ / 68℉:
Scientists Identify a Universal Optimal Temperature For Life on Earth
Note: this does not mean that that is the ideal global average temperature, because that would mean the polar caps are completely gone, the methane stored there released, many large cities underwater, currently hot places will be too hot for human life (e.g. outside temperatures above human body temperature), there will be mass extinctions of many kinds of animals and plants, including those we humans require for survival, and a great proliferation of many bugs that will kill us. Basically we need diversity for the planet to survive, arctic through to tropical and yes, even deserts (deserts are important carbon sinks!). The ideal global average temperature is about 14℃ (we currently have about 15℃ and rising).
But, for setting the thermostat in your home, 20℃ / 68℉ is perfect for most people, though down as far as 17℃ / 61℉ is fine too, provided other things such as humidity are in order. In fact, for sleeping, 18℃ / 62℉ is ideal. This is because the cooler temperature is one of the several things that tell our brain it is nighttime now, and thus trigger secretion of melatonin.
If you’re wondering about temperatures and respiratory viruses, by the way, check out:
The Cold Truth About Respiratory Infections: The Pathogens That Came In From The Cold
Humidity
Most people pay more attention to the temperature in their home than the humidity, and the latter is just as important:
❝Conditions that fall outside of the optimal range of 40–60% can have significant impacts on health, including facilitating infectious transmission and exacerbating respiratory diseases.
When humidity is too low, it can cause dryness and irritation of the respiratory tract and skin, making individuals more susceptible to infections.
When humidity is too high, it can create a damp environment that encourages the growth of harmful microorganisms like mould, bacteria, and viruses.❞
~ Dr. Gabriella Guarnieri et al.
So, if your average indoor humidity falls outside of that range, consider getting a humidifier or dehumidifier, to correct it. Example items on Amazon, for your convenience:
Humidity monitor | Humidifier | Dehumidifier
See also, about a seriously underestimated killer:
Pneumonia: Prevention Is Better Than Cure
Now, one last component to deal with, for perfect indoor air:
Pollution
We tend to think of pollution as an outdoors thing, and indeed, the pollution in your home will (hopefully!) be lower than that of a busy traffic intersection. However…
- The air you have inside comes from outside, and that matters if you’re in an urban area
- Even in suburban and rural areas, general atmospheric pollutants will reach you, and if you’ve ever been subject to wildfire smoke, you’ll know that’s no fun either.
- Gas appliances in the home cause indoor pollution, even when carbon monoxide is within levels considered acceptable. This polluting effect is much stronger for open gas flames (such as on gas cookers/stoves, or gas fires), than for closed gas heating systems (such as a gas-powered boiler for central heating).
- Wood stoves/fireplaces are not an improvement, in fact they are worse, and don’t get us started on coal. You should not be breathing these things, and definitely should not be burning them in an enclosed space.
- That air conditioning, humidifier, dehumidifier? They may be great for temperature and humidity, but please clean/change the filter more often than you think is necessary, or things will grow there and then your device will be adding pathogens to the air as it goes.
- Plug-in air-freshening devices? They may smell clean, but they are effectively spraying cleaning fluids into your lungs. So please don’t.
So, what of air purifiers? They can definitely be of benefit. for example:
But watch out! Because if you don’t clean/change the filter regularly, guess what happens! That’s right, it’ll be colonized with bacteria/fungus and then be blowing those at you.
And no, not all of them will be visible to the naked eye:
Is Unnoticed Environmental Mold Harming Your Health?
Taking a holistic approach
The air is a very important factor for the health of your lungs (and thus, for the health of everything that’s fed oxygen by your lungs), but there are more things we can do as well:
Seven Things To Do For Good Lung Health!
Take care!
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“Slugging” Skin Care Routine (Tips From A Dermatologist)
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Dermatologist Dr. Jenny Liu weighs in with advice!
Sometimes simplest is best
Slugging is a skincare trend involving applying petrolatum (e.g. Vaseline) as the final step to lock in hydration and repair the skin barrier. It’s particularly useful for dry, sensitive, or eczema-prone skin, and/or damaged skin barriers from overuse of actives or harsh conditions.
How it works: the waterproof layer reduces water loss (up to 99%) and facilitates repair the skin barrier. Thus, it indirectly hydrates the skin, supports natural exfoliation, and reduces fine lines. Best of all, it’s non-irritating, non-comedogenic, and safe for all skin types.
How to do it:
- Cleanse thoroughly to remove makeup and impurities.
- Apply a moisturizer or serum with humectants (e.g. glycerin, hyaluronic acid).
- Seal with petrolatum (e.g. Vaseline or similar).
- Skip areas with stronger active ingredients (e.g. retinoids) and active acne areas.
- Apply 30–60 minutes before bed to reduce product transfer.
- Use a gentle cleanser in the morning to remove residue.
For more on all of this, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Castor Oil: All-Purpose Life-Changer, Or Snake Oil? ← skincare is one of the things it definitely does work well for, and can be used for slugging also.
Take care!
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Pregnant women can now get a free RSV shot. What other vaccines do you need when you’re expecting?
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From today, February 3, pregnant women in Australia will be eligible for a free RSV vaccine under the National Immunisation Program.
This vaccine is designed to protect young infants from severe RSV (respiratory syncytial virus). It does so by generating the production of antibodies against RSV in the mother, which then travel across the placenta to the baby.
While the RSV vaccine is a new addition to the National Immunisation Program, it’s one of three vaccines provided free for pregnant women under the program, alongside ones for influenza and whooping cough. Each offers important protection for newborn babies.
voronaman/Shutterstock The RSV vaccine
RSV is the most common cause of lower respiratory infections (bronchiolitis and pneumonia) in infants. It’s estimated that of every 100 infants born in Australia each year, at least two will be hospitalised with RSV by six months of age.
RSV infection is most common roughly between March and August in the southern hemisphere, but infection can occur year-round, especially in tropical areas.
The vaccine works by conferring passive immunity (from the mother) as opposed to active immunity (the baby’s own immune response). By the time the baby is born, their antibodies are sufficient to protect them during the first months of life when they are most vulnerable to severe RSV disease.
The RSV vaccine registered for use in pregnant women in Australia, Abrysvo, has been used since 2023 in the Americas and Europe. Real-world experience there shows it’s working well.
For example, over the 2024 RSV season in Argentina, it was found to prevent 72.7% of lower respiratory tract infections caused by RSV and requiring hospitalisation in infants aged 0–3 months, and 68% among those aged 0–6 months. This research noted three deaths from RSV, all in infants whose mothers did not receive the RSV vaccine during pregnancy.
This was similar to protection seen in a large multinational clinical trial that compared babies born to mothers who received this RSV vaccine with babies born to mothers who received a placebo. This study found the vaccine prevented 82.4% of severe cases of RSV in infants aged under three months, and 70% under six months, and that the vaccine was safe.
Vaccinating mothers during pregnancy protects the newborn baby. StoryTime Studio/Shutterstock In addition to the maternal vaccine, nirsevimab, a long-acting monoclonal antibody, provides effective protection against severe RSV disease. It’s delivered to the baby by an intramuscular injection, usually in the thigh.
Nirsevimab is recommended for babies born to women who did not receive an RSV vaccine during pregnancy, or who are born within two weeks of their mother having received the shot (most likely if they’re born prematurely). It may also be recommended for babies who are at higher risk of RSV due to a medical condition, even if their mother was vaccinated.
Nirsevimab is not funded under the National Immunisation Program, but is covered under various state and territory-based programs for infants of mothers who fall into the above categories.
But now we have a safe and effective RSV vaccine for pregnancy, all pregnant women should be encouraged to receive it as the first line of prevention. This will maximise the number of babies protected during their first months of life.
Flu and whooping cough
It’s also important pregnant women continue to receive flu and whooping cough vaccines in 2025. Like the RSV vaccine, these protect infants by passing antibodies from mother to baby.
There has been a large whooping cough outbreak in Australia in recent months, including a death of a two-month-old infant in Queensland in November 2024.
The whooping cough vaccine, given in combination with diphtheria and tetanus, prevents more than 90% of whooping cough cases in babies too young to receive their first whooping cough vaccine dose.
Similarly, influenza can be deadly in young babies, and maternal flu vaccination substantially reduces hospital visits associated with influenza for babies under six months. Flu can also be serious for pregnant women, so the vaccine offers important protection for the mother as well.
COVID vaccines are safe in pregnancy, but unless a woman is otherwise eligible, they’re not routinely recommended. You can discuss this with your health-care provider.
When and where can you get vaccinated?
Pregnant women can receive these vaccines during antenatal visits through their GP or in a specialised antenatal clinic.
The flu vaccine is recommended at any time during pregnancy, the whooping cough vaccine from 20 weeks (ideally before 32 weeks), and the RSV vaccine from 28 weeks (before 36 weeks).
It’s safe to receive multiple vaccinations at the same clinic visit.
The RSV vaccine is now available for pregnant women under the National Immunisation Program. Olga Rolenko/Shutterstock We know vaccination rates have declined in a variety of groups since the pandemic, and there’s evidence emerging that suggests this trend has occurred in pregnant women too.
A recent preprint (a study yet to be peer-reviewed) found a decrease of nearly ten percentage points in flu vaccine coverage among pregnant women in New South Wales, from 58.8% in 2020 to 49.1% in 2022. The research showed a smaller drop of 1.4 percentage points for whooping cough, from 79% in 2020 to 77.6% in 2022.
It’s important to work to improve vaccination rates during pregnancy to give babies the best protection in their first months of life.
We know pregnant women would like to receive information about new and routine maternal vaccines early in pregnancy. In particular, many pregnant women want to understand how vaccines are tested for safety, and their effectiveness, which was evident during COVID.
GPs and midwives are trusted sources of information on vaccines in pregnancy. There’s also information available online on Sharing Knowledge About Immunisation, a collaboration led by the National Centre for Immunisation Research and Surveillance.
Archana Koirala, Paediatrician and Infectious Diseases Specialist, University of Sydney; Bianca Middleton, Senior Research Fellow, Menzies School of Health Research; Margie Danchin, Professor of Paediatrics and vaccinologist, Royal Childrens Hospital, University of Melbourne and Murdoch Childrens Research Institute (MCRI); Associate Dean International, University of Melbourne, Murdoch Children’s Research Institute; Peter McIntyre, Professor in Women’s and Children’s Health, University of Otago, and Rebecca Doyle, Adjunct Research Fellow, School of Nursing, Midwifery and Social Work, The University of Queensland
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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These Top Few Things Make The Biggest Difference To Health
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The Best Few Interventions For The Best Health
Writer’s note: I was going to do something completely different for today (so that can go out another week now), but when reflecting on my own “what should I focus on in the new year?” (in terms of my own personal health goals and such) it occured to me that I should look back on the year’s articles, to take our own advice myself, and see what most important things I should make sure to focus on.
In so doing for myself, it occured to me that you, our subscribers who like condensed information and simple interventions for big positive effects, might also find value in a similar once-over. And so, today’s main feature was born!
Sometimes at 10almonds we talk about “those five things that affect everything”. They are:
- Good diet
- Good exercise
- Good sleep
- Not drinking
- Not smoking
If we were to add a sixth in terms of things that make a huge difference, it would be “manage stress effectively” and a seventh, beyond the scope of our newsletter, would be “don’t be socioeconomically disadvantaged” (e.g. poor, and/or part of some disprivileged minority group).
But as for those five we listed, it still leaves the question: what are the few most effective things we can do to improve them? Where can we invest our time/energy/effort for greatest effect?
Good diet
Best current science consistently recommends the Mediterranean Diet:
The Mediterranean Diet: What Is It Good For?
But it can be tweaked for specific desired health considerations:
Four Ways To Upgrade The Mediterranean Diet
Other most-effective dietary tweaks that impact a lot of other areas of health include looking after your gut health and looking after your blood sugars:
Making Friends With Your Gut (You Can Thank Us Later)
and
“Let Them Eat Cake”, She Said (10 Ways To Balance Blood Sugars)
Good exercise
Most exercise is good, but two of the most beneficial things that are (for most people) easy to implement are walking, and High-Intensity Interval Training:
How To Do HIIT (Without Wrecking Your Body)
Good sleep
This means quality and quantity! We cannot skimp on either and expect good health:
Why You Probably Need More Sleep
and as for quality,
The Head-To-Head Of Google and Apple’s Top Apps For Getting Your Head Down
Not drinking
According to the World Health Organization, the only safe amount of alcohol is zero.
See also:
Can We Drink To Good Health? (e.g. Red Wine & Heart Health)
and
Not smoking
We haven’t done a main feature on this! It’s probably not really necessary, as it’s not very contentious to say “smoking is bad for everything”.
WHO | Tobacco kills up to half its users who don’t quit
However, as a side-note, while cannabis is generally recognised as not as harmful as tobacco-based products, it has some fairly major drawbacks too. For some people, the benefits (e.g. pain relief) may outweigh the risks, though:
Final thoughts
Not sure where to start? We suggest this order of priorities, unless you have a major health condition that makes something else a higher priority:
- If you smoke, stop
- If you drink, reduce, or ideally stop
- Improve your diet
About that diet…
- Worry less about what to exclude, and instead focus on adding more variety of fruit/veg
- See also: Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
- That said, if you’re looking for things to cut, sugar is a top candidate (and red meat is in clear second place albeit some way below)
When it comes to exercise, get your 10,000 daily steps in (actually, science says 8,000 steps is fine), and consider adding HIIT per our above article, when you feel like adding that in. As for that about the steps:
When it comes to sleep, if you’re taking care of the above things, and set a regular early wake-up time that you do not deviate from, then this will probably take care of itself, if you don’t have a sleep-inconvenient lifestyle (e.g. shift work, just had a baby, etc) or a sleep disorder.
For further pointers, see: 10 Tips for Better Sleep: Starting In The Morning
Take care!
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But First, Inner Peace – by Case Kenny
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Thinking positively and vividly imagining a Ferrari parked in your driveway will not, in fact, cause it to manifest there.
You know what that method does work for, though? Feelings.
This book is essentially a guided thought-and-feeling modelling system that, consisting of 60 chapters to be taken one-per-day, aims to rewire your mind for inner peace.
This is not, however, just a matter of “imagine peacefulness”, or nice-sounding platitudes. Rather, at the end of each chapter there is an exercise and journaling prompts; effectively, work to do along the way.
Weighing in at 438 pages, this is a sizeable book, but part of that is because of the space to write answers to journaling prompts. Still, it’s not exactly a pamphlet, either—there is serious and extensive content here too.
Like any daily reader, you can zip through it all at once if you like, but a benefit to doing the chapter-a-day approach is that it sets a habit of mindful reflection, and gives you a chance to implement each thing, one per day, building up new habits in that regard, too. In contrast, reading it all in one sitting wouldn’t give that.
Bottom line: without inner peace, we don’t have much. Treat yourself—you deserve it.
Click here to check out But First, Inner Peace, and enjoy inner peace!
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