The Distracted Mind – by Dr. Adam Gazzaley and Dr. Larry Rosen
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Yes, yes, we know, unplug once in a while. But what else do this highly-qualified pair of neuroscientists have to offer?
Rather than being a book for the sake of being a book, with lots of fluff and the usual advice about single-tasking, the authors start with a reframe:
Neurologically speaking, the hit of dopamine we get when looking for information is the exact same as the hit of dopamine that we, a couple of hundred thousand years ago, got when looking for nuts and berries.
- When we don’t find them, we become stressed, and search more.
- When we do find them, we are encouraged and search more nearby, and to the other side of nearby, and near around, to find more.
But in the case of information (be it useful information or celebrity gossip or anything in between), the Internet means that’s always available now.
So, we jitter around like squirrels, hopping from one to the next to the next.
A strength of this book is where it goes from there. Specifically, what evidence-based practices will actually keep our squirrel-brain focused… and which are wishful thinking for anyone who lives in this century.
Bringing original research from their own labs, as well as studies taken from elsewhere, the authors present a science-based toolkit of genuinely useful resources for actual focus.
Bottom line: if you think you could really optimize your life if you could just get on track and stay on track, this is the book for you.
Click here to check out The Distracted Mind, and get yours to focus!
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Non-Alcohol Mouthwash vs Alcohol Mouthwash – Which is Healthier?
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Our Verdict
When comparing non-alcohol mouthwash to alcohol mouthwash, we picked the alcohol.
Why?
Note: this is a contingent choice and is applicable to most, but not all, people.
In short, there has been some concern about alcohol mouthwashes increasing cancer risk, but research has shown this is only the case if you already have an increased risk of oral cancer (for example if you smoke, and/or have had an oral cancer before).
For those for whom this is not the case (for example, if you don’t smoke, and/or have no such cancer history), then best science currently shows that alcohol mouthwash does not cause any increased risk.
What about non-alcohol mouthwashes? Well, they have a different problem; they usually use chlorine-based chemicals like chlorhexidine or cetylpyridinium chloride, which are (exactly as the label promises) exceptionally good at killing oral bacteria.
(They’d kill us too, at higher doses, hence: swill and spit)
Unfortunately, much like the rest of our body, our mouth is supposed to have bacteria there and bad things happen when it doesn’t. In the case of our oral microbiome, cleaning it with such powerful antibacterial agents can kill our “good” bacteria along with the bad, which lowers the pH of our saliva (that’s bad; it means it is more acidic), and thus indirectly erodes tooth enamel.
You can read more about the science of all of the above (with references), here:
Toothpastes & Mouthwashes: Which Help And Which Harm?
Summary:
For most people, alcohol mouthwashes are a good way to avoid the damage that can be done by chlorhexidine in non-alcohol mouthwashes.
Here are some examples, but there will be plenty in your local supermarket:
Non-Alcohol, by Colgate | Alcohol, by Listerine
If you have had oral cancer, or if you smoke, then you may want to seek a third alternative (and also, please, stop smoking if you can).
Or, really, most people could probably skip mouthwashes, if you’ve good oral care already by other means. See also:
Toothpastes & Mouthwashes: Which Help And Which Harm?
(yes, it’s the same link as before, but we’re now drawing your attention to the fact it has information about toothpastes too)
If you do want other options though, might want to check out:
Less Common Oral Hygiene Options ← miswak sticks are especially effective
Take care!
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The Brain-Gut Highway: A Two-Way Street
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The Brain-Gut Two-Way Highway
This is Dr. Emeran Mayer. He has the rather niche dual specialty of being a gastroenterologist and a neurologist. He has published over 353 peer reviewed scientific articles, and he’s a professor in the Departments of Medicine, Physiology, and Psychiatry at UCLA. Much of his work has been pioneering medical research into gut-brain interactions.
We know the brain and gut are connected. What else does he want us to know?
First, that it is a two-way interaction. It’s about 90% “gut tells the brain things”, but it’s also 10% “brain tells the gut things”, and that 10% can make more like a 20% difference, if for example we look at the swing between “brain using that 10% communication to tell gut to do things worse” or “brain using that 10% communication to tell gut to do things better”, vs the midpoint null hypothesis of “what the gut would be doing with no direction from the brain”.
For example, if we are experiencing unmanaged chronic stress, that is going to tell our gut to do things that had an evolutionary advantage 20,000–200,000 years ago. Those things will not help us now. We do not need cortisol highs and adrenal dumping because we ate a piece of bread while stressed.
Read more (by Dr. Mayer): The Stress That Evolution Has Not Prepared Us For
With this in mind, if we want to look after our gut, then we can start before we even put anything in our mouths. Dr. Mayer recommends managing stress, anxiety, and depression from the head downwards as well as from the gut upwards.
Here’s what we at 10almonds have written previously on how to manage those things:
- No-Frills, Evidence-Based Mindfulness
- How To Set Anxiety Aside
- The Mental Health First-Aid You’ll Hopefully Never Need
Do eat for gut health! Yes, even if…
Unsurprisingly, Dr. Mayer advocates for a gut-friendly, anti-inflammatory diet. We’ve written about these things before:
…but there’s just one problem:
For some people, such as with IBS, Crohn’s, and colitis, the Mediterranean diet that we (10almonds and Dr. Mayer) generally advocate for, is inaccessible. If you (if you have those conditions) eat as we describe, a combination of the fiber in many vegetables and the FODMAPs* in many fruits, will give you a very bad time indeed.
*Fermentable Oligo-, Di-, Monosaccharides And Polyols
Dr. Mayer has the answer to this riddle, and he’s not just guessing; he and his team did science to it. In a study with hundreds of participants, he measured what happened with adherence (or not) to the Mediterranean diet (or modified Mediterranean diet) (or not), in participants with IBS (or not).
The results and conclusions from that study included:
❝Among IBS participants, a higher consumption of fruits, vegetables, sugar, and butter was associated with a greater severity of IBS symptoms. Multivariate analysis identified several Mediterranean Diet foods to be associated with increased IBS symptoms.
A higher adherence to symptom-modified Mediterranean Diet was associated with a lower abundance of potentially harmful Faecalitalea, Streptococcus, and Intestinibacter, and higher abundance of potentially beneficial Holdemanella from the Firmicutes phylum.
A standard Mediterranean Diet was not associated with IBS symptom severity, although certain Mediterranean Diet foods were associated with increased IBS symptoms. Our study suggests that standard Mediterranean Diet may not be suitable for all patients with IBS and likely needs to be personalized in those with increased symptoms.❞
In graphical form:
And if you’d like to read more about this (along with more details on which specific foods to include or exclude to get these results), you can do so…
- The study itself (full article): The Association Between a Mediterranean Diet and Symptoms of Irritable Bowel Syndrome
- Dr. Mayer’s blog (lay explanation): The Benefits of a Modified Mediterranean Diet for Irritable Bowel Syndrome
Want to know more?
Dr. Mayer offers many resources, including a blog, books, recipes, podcasts, and even a YouTube channel:
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Plant-Based Salmon Recipe
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From Tofu to Salmon
This video (below) by SweetPotatoSoul isn’t just a recipe tutorial; it’s an inspiring journey into the world of vegan cooking, proving that reducing animal products doesn’t have to mean sacrificing flavor.
The key to her vegan salmon is the tofu. However, there’s a trick to the tofu – you have to press it.
Essentially, this involved putting some paper towel on either side of the tofu, and then placing a heavy object on top; this removes excess water and, more importantly, primes the tofu to absorb the flavor of your marinade!
(You’ll want to press the tofu for around 1 hour)
Find the rest of the recipe in the 12-minute video below!
Other Plant-Based Recipes
With there being so many benefits of cutting meat out of your diet, we’ve spent the time reviewing some of the top books on vegan recipes, including The Green Roasting Tin and The Vegan Instant Pot Cookbook. We hope you enjoy them as much as you’ll enjoy this recipe:
How was the video? If you’ve discovered any great videos yourself that you’d like to share with fellow 10almonds readers, then please do email them to us!
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Cheeky diet soft drink getting you through the work day? Here’s what that may mean for your health
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Many people are drinking less sugary soft drink than in the past. This is a great win for public health, given the recognised risks of diets high in sugar-sweetened drinks.
But over time, intake of diet soft drinks has grown. In fact, it’s so high that these products are now regularly detected in wastewater.
So what does the research say about how your health is affected in the long term if you drink them often?
What makes diet soft drinks sweet?
The World Health Organization (WHO) advises people “reduce their daily intake of free sugars to less than 10% of their total energy intake. A further reduction to below 5% or roughly 25 grams (six teaspoons) per day would provide additional health benefits.”
But most regular soft drinks contain a lot of sugar. A regular 335 millilitre can of original Coca-Cola contains at least seven teaspoons of added sugar.
Diet soft drinks are designed to taste similar to regular soft drinks but without the sugar. Instead of sugar, diet soft drinks contain artificial or natural sweeteners. The artificial sweeteners include aspartame, saccharin and sucralose. The natural sweeteners include stevia and monk fruit extract, which come from plant sources.
Many artificial sweeteners are much sweeter than sugar so less is needed to provide the same burst of sweetness.
Diet soft drinks are marketed as healthier alternatives to regular soft drinks, particularly for people who want to reduce their sugar intake or manage their weight.
But while surveys of Australian adults and adolescents show most people understand the benefits of reducing their sugar intake, they often aren’t as aware about how diet drinks may affect health more broadly.
What does the research say about aspartame?
The artificial sweeteners in soft drinks are considered safe for consumption by food authorities, including in the US and Australia. However, some researchers have raised concern about the long-term risks of consumption.
People who drink diet soft drinks regularly and often are more likely to develop certain metabolic conditions (such as diabetes and heart disease) than those who don’t drink diet soft drinks.
The link was found even after accounting for other dietary and lifestyle factors (such as physical activity).
In 2023, the WHO announced reports had found aspartame – the main sweetener used in diet soft drinks – was “possibly carcinogenic to humans” (carcinogenic means cancer-causing).
Importantly though, the report noted there is not enough current scientific evidence to be truly confident aspartame may increase the risk of cancer and emphasised it’s safe to consume occasionally.
Will diet soft drinks help manage weight?
Despite the word “diet” in the name, diet soft drinks are not strongly linked with weight management.
In 2022, the WHO conducted a systematic review (where researchers look at all available evidence on a topic) on whether the use of artificial sweeteners is beneficial for weight management.
Overall, the randomised controlled trials they looked at suggested slightly more weight loss in people who used artificial sweeteners.
But the observational studies (where no intervention occurs and participants are monitored over time) found people who consume high amounts of artificial sweeteners tended to have an increased risk of higher body mass index and a 76% increased likelihood of having obesity.
In other words, artificial sweeteners may not directly help manage weight over the long term. This resulted in the WHO advising artificial sweeteners should not be used to manage weight.
Studies in animals have suggested consuming high levels of artificial sweeteners can signal to the brain it is being starved of fuel, which can lead to more eating. However, the evidence for this happening in humans is still unproven.
What about inflammation and dental issues?
There is some early evidence artificial sweeteners may irritate the lining of the digestive system, causing inflammation and increasing the likelihood of diarrhoea, constipation, bloating and other symptoms often associated with irritable bowel syndrome. However, this study noted more research is needed.
High amounts of diet soft drinks have also been linked with liver disease, which is based on inflammation.
The consumption of diet soft drinks is also associated with dental erosion.
Many soft drinks contain phosphoric and citric acid, which can damage your tooth enamel and contribute to dental erosion.
Moderation is key
As with many aspects of nutrition, moderation is key with diet soft drinks.
Drinking diet soft drinks occasionally is unlikely to harm your health, but frequent or excessive intake may increase health risks in the longer term.
Plain water, infused water, sparkling water, herbal teas or milks remain the best options for hydration.
Lauren Ball, Professor of Community Health and Wellbeing, The University of Queensland and Emily Burch, Accredited Practising Dietitian and Lecturer, Southern Cross University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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An Underrated Tool Against Alzheimer’s
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Dementia in general, and Alzheimer’s in particular, affects a lot of people, and probably even more than the stats show, because some (estimated to be: about half) will go undiagnosed and thus unreported:
Alzheimer’s: The Bad News And The Good
At 10almonds, we often talk about brain health, whether from a nutrition standpoint or other lifestyle factors. For nutrition, by the way, check out:
Today we’ll be looking at some new science for an underrated tool:
Bilingualism as protective factor
It’s well-known that bilingualism offers brain benefits, but most people would be hard-pressed to name what, specifically, those brain benefits are.
As doctors Kristina Coulter and Natalie Phillips found in a recent study, one of the measurable benefits may be a defense against generalized (i.e. not necessarily language-related) memory loss Alzheimer’s disease.
Specifically,
❝We used surface-based morphometry methods to measure cortical thickness and volume of language-related and AD-related brain regions. We did not observe evidence of brain reserve in language-related regions.
However, reduced hippocampal volume was observed for monolingual, but not bilingual, older adults with AD. Thus, bilingualism is hypothesized to contribute to reserve in the form of brain maintenance in the context of AD.❞
Read in full: Bilinguals show evidence of brain maintenance in Alzheimer’s disease
This is important, because while language is processed in various parts of the brain beyond the scope of this article, the hippocampi* are where memory is stored.
*usually mentioned in the singular as “hippocampus”, but you have one on each side, unless some terrible accident or incident befell you.
What this means in practical terms: these results suggest that being bilingual means we will retain more of our capacity for memory, even if we get Alzheimer’s disease, than people who are monolingual.
Furthermore, while we’re talking practicality:
❝…our subsample may be characterized as mostly late bilinguals (i.e., learning an L2 after age 5), having moderate self-reported L2 ability, and relatively few participants reporting daily L2 use (33 out of 119)❞
(L2 = second language)
This is important, because it means you don’t have to have grown up speaking multiple languages, you don’t even have to speak it well, and you don’t have to be using your second language(s) on a daily basis, to enjoy benefits. Merely having them in your head appears to be sufficient to trigger the brain to go “oh, we need to boost and maintain the hippocampal volume”.
We would hypothesize that using second language(s) regularly and/or speaking second language(s) well offers additional protection, and the data would support this if it weren’t for the fact that the sample sizes for daily and high-level speakers are a bit small to draw conclusions.
But the important part is: simply knowing another language, including if you literally just learned it later in life, is already protective of hippocampal volume in the context of Alzheimer’s disease.
Here’s a pop-science article about the study, that goes into it in more detail than we have room to here:
Bilingualism linked to greater brain resilience in older adults
Want to learn a new language?
Here are some options where you can get going right away:
If you are thinking “sounds good, but learning a language is too much work”, then that is why we included that third option there. It’s specifically for one language, and that language is Esperanto, arguably the world’s easiest language and specifically designed to be super quick and easy to get good at. Also, it’s free!
Do, kial ne lerni novan lingvon rapide kaj facile? 😉
Want to know more?
For ways to reduce your overall Alzheimer’s risk according to science, check out:
Take care!
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Fix Chronic Fatigue & Regain Your Energy, By Science
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Chronic fatigue is on the rise. A lot of it appears to be Long COVID-related, but whether that’s the case for you or not, one thing that will make a big difference to your energy levels is something that French biochemist Jessie Inchauspé is here to explain:
Mitochondrial management
Inchauspé explains it in terms of a steam train; to keep running, it must have coal burning in its furnace. However, if more coal is delivered to the engine room faster than it can be put in the furnace and burned, and the coal just keeps on coming, the worker there will soon be overwhelmed trying to find places to put it all; the engine room will be full of coal, and the furnace will sputter and go out because the worker can’t even reach it on account of being buried in coal.
So it is with our glucose metabolism also. If we get spikes of glucose faster than our body can deal with them, it will overload the body’s ability to process that energy at all. Just like the steam train worker, our body will try! It’ll stuff that extra glucose wherever it can (storing as glycogen in the liver is a readily available option that’s easy to do and/but also gives you non-alcoholic fatty liver disease and isn’t quickly broken down into useable energy), and meanwhile, your actual mitochondria aren’t getting what they need (which is: a reliable, but gentle, influx of glucose).
You can imagine that the situation we described in the steam train isn’t good for the engine’s longevity, and the corresponding situation in the human body isn’t good for our mitochondria either (or our pancreas, or our liver, or… the list goes on). Indeed, damaged mitochondria affect exercise capacity and stress resilience—as well as being a long-term driver of cancer.
The remedy, of course, is blood sugar management. Specifically, avoiding glucose spikes. She has a list of 10 ways to do this (small changes to how we eat; what things to eat with what, in which order, etc) that make a huge measurable difference. For your convenience, we’ve linked those ten ways below; first though, if you’d like to hear it from Inchauspé directly (her style is very pleasant), enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- 10 Ways To Balance Your Blood Sugars ← this is the longer list she’s referring to in the video!
- How To Unfatty A Fatty Liver ← also relevant
Take care!
Don’t Forget…
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