The Vagus Nerve (And How You Can Make Use Of It)

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The Vagus Nerve: The Brain-Gut Highway

The longest cranial nerve is the vagus nerve; it runs all the way from your brain to your colon. It’s very important, and (amongst other tasks) it largely regulates your parasympathetic nervous system, and autonomous functions like:

  • Breathing
  • Heart rate
  • Vasodilation & vasoconstriction
  • Blood pressure
  • Reflex actions (e.g. coughing, sneezing, swallowing, vomiting, hiccuping)

That’s great, but how does knowing about it help us?

Because of vagal maneuvers! This means taking an action to stimulate the vagus nerve, and prompt it to calm down various bodily functions that need calming down. This can take the form of:

  • Massage
  • Electrostimulation
  • Diaphragmatic breathing

Massage is perhaps the simplest; “vagus” means “wandering”, and the nerve is accessible in various places, including behind the ears. That’s the kind of thing that’ easier to show than tell, though, so we’ll include a video at the end.

Electrostimulation is the fanciest, and has been used to treat migraines and cluster headaches. Check out, for example:

Update on noninvasive neuromodulation for migraine treatment-Vagus nerve stimulation

Diaphragmatic breathing means breathing from the diaphragm—the big muscular tissue that sits under your lungs. You might know it as “abdominal breathing”, and refers to breathing “to the abdomen” rather than merely to the chest.

Even though your lungs are obviously in your chest not your abdomen, breathing with a focus on expanding the abdomen (rather than the chest) when breathing in, will result in much deeper breathing as the diaphragm allows the lungs to fill downwards as well as outwards.

Why this helps when it comes to the vagus nerve is simply that the vagus nerve passes by the diaphragm, such that diaphragmatic breathing will massage the vagus nerve deep inside your body.

More than just treating migraines

Vagus nerve stimulation has also been researched and found potentially helpful for managing:

All this is particularly important as we get older, because vagal response reduces with age, and vagus nerve stimulation, which improves vagal tone, makes it easier not just to manage the aforementioned maladies, but also simply to relax more easily and more deeply.

See: Influence of age and gender on autonomic regulation of heart

We promised a video for the massage, so here it is:

!

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  • Big Think’s #1 Antidote To Aging

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    Why This Video Is Important

    A lot of what we talk about here at 10almonds is focused on healthy aging. We want you – our lovely readers – to not only live for a long time, but also be healthy enough to enjoy that “long time”.

    We’ve talked about anything from Dr. Greger’s eight anti-aging interventions, to the specific benefits of resveratrol or metformin in combatting aging, to even reducing stress-induced aging.

    So, why is this video important? It goes beyond just talking about what we know about living longer, but also focuses on how we should live longer; there’s a big difference between living a long life but never leaving your house vs. living a long life beyond your front door.

    The Takeaways

    The core message that Big Think wants to convey is that our lifestyle is our best bet in slowing the aging process. Our bodies are adaptive systems, responding positively to healthy lifestyle choices. They focus on exercise: regular physical activity increases healthspan, consequently extending lifespan.

    A key takeaway is the difference between physical activity and exercise. While any movement counts as physical activity, exercise is a deliberate, health-focused activity. It benefits the brain by releasing growth factors that strengthen critical areas like the hippocampus and prefrontal cortex.

    The video encourages embracing physical activity in any form available to you, from gardening to walking. The goal isn’t to hit a specific number of steps but to stay active in a way that suits your lifestyle.

    Science may not solve death. Yet. But focusing on maintaining a healthy, functioning state for as long as possible is the real victory in the battle against aging. And, at the moment, exercise seems to be our best bet:

    How did you find that 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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  • Safe Effective Sleep Aids For Seniors

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    Safe Efective Sleep Aids For Seniors

    Choosing a safe, effective sleep aid can be difficult, especially as we get older. Take for example this research review, which practically says, when it comes to drugs, “Nope nope nope nope nope, definitely not, we don’t know, wow no, useful in one (1) circumstance only, definitely not, fine if you must”:

    Review of Safety and Efficacy of Sleep Medicines in Older Adults

    Let’s break it down…

    What’s not so great

    Tranquilizers aren’t very healthy ways to get to sleep, and are generally only well-used as a last resort. The most common of these are benzodiazepines, which is the general family of drugs with names usually ending in –azepam and –azolam.

    Their downsides are many, but perhaps their biggest is their tendency to induce tolerance, dependence, and addiction.

    Non-benzo hypnotics aren’t fabulous either. Z-drugs such as zolpidem tartrate (popularly known by the brand name Ambien, amongst others), comes with warnings that it shouldn’t be prescribed if you have sleep apnea (i.e., one of the most common causes of insomnia), and should be used only with caution in patients who have depression or are elderly, as it may cause protracted daytime sedation and/or ataxia.

    See also: Benzodiazepine and z-drug withdrawal

    (and here’s a user-friendly US-based resource for benzodiazepine addiction specifically)

    Antihistamines are commonly sold as over-the-counter sleep aids, because they can cause drowsiness, but a) they often don’t b) they may reduce your immune response that you may actually need for something. They’re still a lot safer than tranquilizers, though.

    What about cannabis products?

    We wrote about some of the myths and realities of cannabis use yesterday, but it does have some medical uses beyond pain relief, and use as a sleep aid is one of them—but there’s another caveat.

    How it works: CBD, and especially THC, reduces REM sleep, causing you to spend longer in deep sleep. Deep sleep is more restorative and restful. And, if part of your sleep problem was nightmares, they can only occur during REM sleep, so you’ll be skipping those, too. However, REM sleep is also necessary for good brain health, and missing too much of it will result in cognitive impairment.

    Opting for a CBD product that doesn’t contain THC may improve sleep with less (in fact, no known) risk of long-term impairment.

    See: Cannabis, Cannabinoids, and Sleep: a Review of the Literature

    Melatonin: a powerful helper with a good safety profile

    We did a main feature on this recently, so we won’t take up too much space here, but suffice it to say: melatonin is our body’s own natural sleep hormone, and our body is good at scrubbing it when we see white/blue light (so, look at such if you feel groggy upon awakening, and it should clear up quickly), so that and its very short elimination half-life again make it quite safe.

    Unlike tranquilizers, we don’t develop a tolerance to it, let alone dependence or addiction, and unlike cannabis, it doesn’t produce long-term adverse effects (after all, our brains are supposed to have melatonin in them every night). You can read our previous main feature (including a link to get melatonin, if you want) here:

    Melatonin: A Safe Natural Sleep Supplement

    Herbal options: which really work?

    Valerian? Probably not, but it seems safe to try. Data on this is very inconsistent, and many studies supporting it had poor methodology. Shinjyo et al. also hypothesized that the inconsistency may be due to the highly variable quality of the supplements, and lack of regulation, as they are provided “based on traditional use only”.

    See: Valerian Root in Treating Sleep Problems and Associated Disorders-A Systematic Review and Meta-Analysis

    Chamomile? Given the fame of chamomile tea as a soothing, relaxing bedtime drink, there’s surprisingly little research out there for this specifically (as opposed to other medicinal features of chamomile, of which there are plenty).

    But here’s one study that found it helped significantly:

    The effects of chamomile extract on sleep quality among elderly people: A clinical trial

    Unlike valerian, which is often sold as tablets, chamomile is most often sold as a herbal preparation for making chamomile tea, so the quality is probably quite consistent. You can also easily grow your own in most places!

    Technological interventions

    We may not have sci-fi style regeneration alcoves just yet, but white noise machines, or better yet, pink noise machines, help:

    White Noise Is Good; Pink Noise Is Better

    Note: the noise machine can be a literal physical device purchased to do that (most often sold as for babies, but babies aren’t the only ones who need to sleep!), but it can also just be your phone playing an appropriate audio file (there are apps available) or YouTube video.

    We reviewed some sleep apps; you might like those too:

    The Head-To-Head Of Google and Apple’s Top Apps For Getting Your Head Down

    Enjoy, and rest well!

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  • How community health screenings get more people of color vaccinated

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    U.S. preventive health screening rates dropped drastically at the height of the COVID-19 pandemic. They have yet to go back to pre-pandemic levels, especially for Black and Latine communities

    Screenings, or routine medical checkups, are important ways to avoid and treat disease. They’re key to finding problems early on and can even help save people’s lives. 

    Community health workers say screenings are also a key to getting more people vaccinated. Screening fairs provide health workers the chance to build rapport and trust with the communities they serve, while giving their clients the chance to ask questions and get personalized recommendations according to their age, gender, and family history.

    But systemic barriers to health care can often keep people from marginalized communities from accessing recommended screenings, exacerbating racial health disparities. 

    Public Good News spoke with Dr. Marie-Jose Francois, president and chief executive officer, and April Johnson, outreach coordinator, at the Center for Multicultural Wellness and Prevention (CMWP), in Central Florida, to learn how they promote the benefits of screening and leverage screenings for vaccination outreach among their diverse communities. 

    Here’s what they said. 

    [Editor’s note: This content has been edited for clarity and length.]

    PGN: What is CMWP’s mission? How does vaccine outreach fit into the work you do in the communities you serve?

    Dr. Marie-Jose Francois: Since 1995, our mission has been to enhance the health, wellness, and quality of life for diverse populations in Central Florida. At the beginning, our main focus was education, wellness, and screening for HIV/AIDS, and we continue to do case management for HIV screening and testing. 

    When the issue of COVID-19 came into the picture, we included COVID-19 information and education and stressed the importance of screening and receiving vaccinations during all of our outreach activities. 

    We try to meet the community where they are. Because there is so much misconception—and taboo—in regard to immunization. 

    April Johnson: So our job is to disperse accurate information. And how we do that is we go into rural communities. We build partnerships with local apartment complexes, hair salons, nail salons, laundromats, and provide a little community engagement, where people just hang out in different areas. 

    We build gatekeepers in those communities because you first have to get in there. You have to know that they trust you. Being in this field for about 30 years, I’ve [learned that] flexibility is key. Because sometimes you can’t get them from 9 to 5, or [from] Monday through Friday. So, you have to be very flexible in doing the outreach portion in order to get what you need. 

    I’ve built collaborations with senior citizen centers, community centers, schools, clinics, churches in Orlando and [in] different areas in Orange, Osceola, Seminole, and Lake counties. And we also partner with other community-based organizations to try to make it like a one-stop shop. So, partnership is a big thing. 

    PGN: How do you promote the importance of preventive screenings in the communities you serve?

    M.F.: We try to make them view their health in a more comprehensive way, for them to understand the importance of screening. [That] self care is key, and for them to not be afraid. 

    We empower them to know what to ask when they go to the doctor. We ask them, ‘Do you know your status? Do you know your numbers?’ 

    For example, if you go to the doctor, do you know your blood pressure? If you’re diabetic? Do you know your hemoglobin (A1C)? Do you know your cholesterol levels

    And now, [we also ask them]: ‘Have you received your flu shot for the year? Have you received all of your vaccine doses for COVID-19?’ We are even adding the mpox vaccine now, based on risk factors. 

    [We recommend they] ask their provider. For women, [we ask], ‘When do you need to have your mammogram?’ For the men, ‘You need to ask about your PSA and also about when and when to have your colonoscopy based on your age.’ 

    We also try to explain to the community that the more they know their family history, the more they can engage in their own health. Because sometimes you have mom and dad who have a history of cancer. They have a history of diabetes or blood pressure—and they don’t talk to their children. So, we try to [recommend they] talk to their children. Your own family needs to know what’s going on so they can be proactive in their screenings.

    PGN: What strategies or methods have you found most effective in getting people screened? 

    M.F.: Not everybody wants to be screened, not everybody wants to receive vaccines. 

    But with patience, just give them the facts. It goes right back to education, people have to be assured. 

    When you talk to them about COVID, or even HIV, you may hear them say, ‘Oh, I don’t see myself at risk for HIV.’  But we have to repeat to them that the more they get screened to make sure they’re OK, the better it is for them. ‘The more you use condoms, [the] safer it is for you.’ 

    In Haitian culture, they listen to the radio. So we use the radio as a tool to educate and deliver information [to] get vaccinated, wash your hands. ‘If you’re coughing, cover your mouth. If you have a fever, wear your masks. Call your doctor.’ 

    In our target population, we have people who have chronic conditions. We have people with HIV. So, we have to motivate them to receive the flu vaccine, to receive the COVID vaccine, to receive that RSV [vaccine], or to get the mpox vaccine. We have people with diabetes, high blood pressure, high cholesterol, depressed immune systems. We have people with lupus, we have people with sickle cell disease. 

    So, this is a way to [ensure that] whomever you’re talking to one-on-one understands the value of being safe. 

    This article first appeared on Public Good News and is republished here under a Creative Commons license.

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  • Tilapia vs Cod – Which is Healthier?

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    Our Verdict

    When comparing tilapia to cod, we picked the tilapia.

    Why?

    Another case of “that which is more expensive is not necessarily the healthier”!

    In terms of macros, tilapia has more protein and fats, as well as more omega-3 (and omega-6). On the downside, tilapia does have relatively more saturated fat, but at 0.94g/100g, it’s not exactly butter.

    The vitamins category sees that tilapia has more of vitamins B1, B3, B5, B12, D, and K, while cod has more of vitamins B6, B9, and choline. A moderate win for tilapia.

    When it comes to minerals, things are most divided; tilapia has more copper, iron, phosphorus, potassium, manganese, and selenium, while cod has more magnesium and zinc. An easy win for tilapia.

    One other thing to note is that both of these fish contain mercury these days (and it’s worth noting: cod has nearly 10x more mercury). Mercury is, of course, not exactly a health food.

    So, excessive consumption of either is not recommended, but out of the two, tilapia is definitely the one to pick.

    Want to learn more?

    You might like to read:

    Farmed Fish vs Wild Caught: Know The Health Differences

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  • Easing Election Stress & Anxiety

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    At the time of writing, the US is about to have a presidential election. Most of our readers are Americans, and in any case, what the US does tends to affect most of the world, so certainly many readers in other countries will be experiencing stress and anxiety about it too.

    We’re a health science publication, not a political outlet, so we’ll refrain from commenting on any candidates or campaign policies, and we’d also like to be clear we are not urging you to any particular action politically—our focus today is simply about mental health.

    First, CBT what can be CBT’d

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    Next, DBT what can be DBT’d

    A lot of CBT hinges on the assumption that our assumptions are incorrect. For example, that our friend does not secretly despise us, that our spouse is not about to leave us, that the symptoms we are experiencing are not cancer, and in this case, that the election outcome will not go badly, and if it does, the consequences will be less severe than imagined.

    But… What if our concerns are, in fact, fully justified? Here’s where Dialectic Behavior Therapy (DBT) comes in, and with it, what therapists call “radical acceptance”.

    In other words, we accept up front the idea that maybe it’s going to be terrible and that will truly suck, and then either:

    • there’s nothing we can reasonably do about it now (so worrying just means you’ll suffer twice), or
    • there is something we can reasonably do about it now (so we can go do that thing)

    After doing the thing (if appropriate), defer processing the outcome of the election until after the election. There is no point in wasting energy to worry before then. In a broadly two-party system where things are usually close between those two largest parties, there’s something close to a 50% chance of an outcome that’s, at least, not the worst you feared.

    Learn more: CBT, DBT, & Radical Acceptance

    Lastly, empower yourself with Behavioral Activation (BA)

    Whatever the outcome of any given election, the world will keep turning, and the individual battles about any given law or policy or such will continue to go on. That’s not to say an election won’t change things—it will—but there will always still be stuff to do on a grassroots level to make the world a better place, no matter what politician has been elected.

    Being involved in doing things on a community level will not only help banish any feelings of despair (and if you got the election outcome you wanted, it’ll help you feel involved), but also, it can give you a sense of control, and can even form a part of the “ikigai” that is often talked about as one of the pillars of healthy longevity.

    Learn more: What’s Your Ikigai?

    And if you like videos, then enjoy this one (narrated by the ever soothing-voiced Alain de Botton):

    Watch now: How To Escape From A Despairing Mood (4:46) ← it also has a text version if you prefer that

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  • Beyond Balancing The Books – by George Marino, CPA, CFP

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    We hear a lot about the importance of mindfulness, yet how can Zen-like non-attachment to the material world go well with actually surviving (let alone thriving) in a Capitalist society?

    Books that try to connect the two often end up botching it badly to the level of early 2000s motivational posters.

    So, what does this book do differently? Mostly it’s because rather than a motivational speech with exhortations to operate on a higher plain and manifest your destiny and all that, it gives practical, down-to-earth advice and offers small simple things you can do or change to mindfully engage with the world of business rather than operating on auto-pilot.

    Basically: how to cut out the stress without cutting out your performance.

    All in all, we think both your health and your productivity will thank you for it!

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