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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  • Tourette’s Syndrome Treatment Options

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    It’s Q&A Day at 10almonds!

    Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!

    In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!

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    So, no question/request too big or small

    ❝Is there anything special that might help someone with Tourette’s syndrome?❞

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  • Why is toddler milk so popular? Follow the money

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    Toddler milk is popular and becoming more so. Just over a third of Australian toddlers drink it. Parents spend hundreds of millions of dollars on it globally. Around the world, toddler milk makes up nearly half of total formula milk sales, with a 200% growth since 2005. Growth is expected to continue.

    We’re concerned about the growing popularity of toddler milk – about its nutritional content, cost, how it’s marketed, and about the impact on the health and feeding of young children. Some of us voiced our concerns on the ABC’s 7.30 program recently.

    But what’s in toddler milk? How does it compare to cow’s milk? How did it become so popular?

    What is toddler milk? Is it healthy?

    Toddler milk is marketed as appropriate for children aged one to three years. This ultra-processed food contains:

    • skim milk powder (cow, soy or goat)
    • vegetable oil
    • sugars (including added sugars)
    • emulsifiers (to help bind the ingredients and improve the texture)
    • added vitamins and minerals.

    Toddler milk is usually lower in calcium and protein, and higher in sugar and calories than regular cow’s milk. Depending on the brand, a serve of toddler milk can contain as much sugar as a soft drink.

    Even though toddler milks have added vitamins and minerals, these are found in and better absorbed from regular foods and breastmilk. Toddlers do not need the level of nutrients found in these products if they are eating a varied diet.

    Global health authorities, including the World Health Organization (WHO), and Australia’s National Health and Medical Research Council, do not recommend toddler milk for healthy toddlers.

    Some children with specific metabolic or dietary medical problems might need tailored alternatives to cow’s milk. However, these products generally are not toddler milks and would be a specific product prescribed by a health-care provider.

    Toddler milk is also up to four to five times more expensive than regular cow’s milk. “Premium” toddler milk (the same product, with higher levels of vitamins and minerals) is more expensive.

    With the cost-of-living crisis, this means families might choose to go without other essentials to afford toddler milk.

    Woman holding blue plastic spoon of formula powder over open tin of formula, milk bottle in background
    Toddler milk is more expensive than cow’s milk and contains more sugar.
    Dragana Gordic/Shutterstock

    How toddler milk was invented

    Toddler milk was created so infant formula companies could get around rules preventing them from advertising their infant formula.

    When manufacturers claim benefits of their toddler milk, many parents assume these claimed benefits apply to infant formula (known as cross-promotion). In other words, marketing toddler milks also boosts interest in their infant formula.

    Manufacturers also create brand loyalty and recognition by making the labels of their toddler milk look similar to their infant formula. For parents who used infant formula, toddler milk is positioned as the next stage in feeding.

    How toddler milk became so popular

    Toddler milk is heavily marketed. Parents are told toddler milk is healthy and provides extra nutrition. Marketing tells parents it will benefit their child’s growth and development, their brain function and their immune system.

    Toddler milk is also presented as a solution to fussy eating, which is common in toddlers.

    However, regularly drinking toddler milk could increase the risk of fussiness as it reduces opportunities for toddlers to try new foods. It’s also sweet, needs no chewing, and essentially displaces energy and nutrients that whole foods provide.

    Toddler wearing bib with food smeared on face
    Toddler milk is said to help fussy eating, but it may make things worse.
    zlikovec/Shutterstock

    Growing concern

    The WHO, along with public health academics, has been raising concerns about the marketing of toddler milk for years.

    In Australia, moves to curb how toddler milk is promoted have gone nowhere. Toddler milk is in a category of foods that are allowed to be fortified (to have vitamins and minerals added), with no marketing restrictions. The Australian Competition & Consumer Commission also has concerns about the rise of toddler milk marketing. Despite this, there is no change in how it’s regulated.

    This is in contrast to voluntary marketing restrictions in Australia for infant formula.

    What needs to happen?

    There is enough evidence to show the marketing of commercial milk formula, including toddler milk, influences parents and undermines child health.

    So governments need to act to protect parents from this marketing, and to put child health over profits.

    Public health authorities and advocates, including us, are calling for the restriction of marketing (not selling) of all formula products for infants and toddlers from birth through to age three years.

    Ideally, this would be mandatory, government-enforced marketing restrictions as opposed to industry self-regulation in place currently for infant formulas.

    We musn’t blame parents

    Toddlers are eating more processed foods (including toddler milk) than ever because time-poor parents are seeking a convenient option to ensure their child is getting adequate nutrition.

    Formula manufacturers have used this information, and created a demand for an unnecessary product.

    Parents want to do the best for their toddlers, but they need to know the marketing behind toddler milks is misleading.

    Toddler milk is an unnecessary, unhealthy, expensive product. Toddlers just need whole foods and breastmilk, and/or cow’s milk or a non-dairy, milk alternative.

    If parents are worried about their child’s eating, they should see a health-care professional.

    Anthea Rhodes, a paediatrician from Royal Children’s Hospital Melbourne and a lecturer at the University of Melbourne, co-authored this article.The Conversation

    Jennifer McCann, Lecturer Nutrition Sciences, Institute for Physical Activity and Nutrition, Deakin University; Karleen Gribble, Adjunct Associate Professor, School of Nursing and Midwifery, Western Sydney University, and Naomi Hull, PhD candidate, University of Sydney

    This article is republished from The Conversation under a Creative Commons license. Read the original article.

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  • Do CBD Gummies Work?

    10almonds is reader-supported. We may, at no cost to you, receive a portion of sales if you purchase a product through a link in this article.

    It’s Q&A Day at 10almonds!

    Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!

    In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!

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    So, no question/request too big or small

    ❝I take CBD gummies. I don’t know if they are worth buying. Can you find a study on the effectiveness of gummies❞

    If you take them, and you’re not sure whether they’re worth it, then it sounds like you’re not getting any observable benefit from them?

    If so, that would seem to answer your question, since presumably the reason that you are taking them is for relaxation and/or pain relief, so if you’re not getting the results you want, then no, they are not worth it.

    However! CBD gummies are an incredibly diverse and not-well-studied product, so far, given the relative novelty of their legality. By diverse we mean, they’re not well-standardized.

    In other words: the CBD gummies you get could be completely unlike CBD gummies from a different source.

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    We all have reasons to want to focus on our metabolism. Speed it up to burn more fat; slow it down to live longer. Tweak it for more energy in the day. But what actually is it, and how does it work?

    Dr. Herman Pontzer presents a very useful overview of not just what our metabolism is and how it works, but also why.

    The style of the book is casual, but doesn’t skimp on the science. Whether we are getting campfire stories of Hadza hunter-gatherers, or an explanation of the use of hydrogen isotopes in metabolic research, Dr. Pontzer keeps things easy-reading.

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