The voice in your head may help you recall and process words. But what if you don’t have one?

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Can you imagine hearing yourself speak? A voice inside your head – perhaps reciting a shopping list or a phone number? What would life be like if you couldn’t?

Some people, including me, cannot have imagined visual experiences. We cannot close our eyes and conjure an experience of seeing a loved one’s face, or imagine our lounge room layout – to consider if a new piece of furniture might fit in it. This is called “aphantasia”, from a Greek phrase where the “a” means without, and “phantasia” refers to an image. Colloquially, people like myself are often referred to as having a “blind mind”.

While most attention has been given to the inability to have imagined visual sensations, aphantasics can lack other imagined experiences. We might be unable to experience imagined tastes or smells. Some people cannot imagine hearing themselves speak.

A recent study has advanced our understanding of people who cannot imagine hearing their own internal monologue. Importantly, the authors have identified some tasks that such people are more likely to find challenging.

fizkes/Shutterstock

What the study found

Researchers at the University of Copenhagen in Denmark and at the University of Wisconsin-Madison in the United States recruited 93 volunteers. They included 46 adults who reported low levels of inner speech and 47 who reported high levels.

Both groups were given challenging tasks: judging if the names of objects they had seen would rhyme and recalling words. The group without an inner monologue performed worse. But differences disappeared when everyone could say words aloud.

Importantly, people who reported less inner speech were not worse at all tasks. They could recall similar numbers of words when the words had a different appearance to one another. This negates any suggestion that aphants (people with aphantasia) simply weren’t trying or were less capable.

image of boy sitting with diagram of gold brain superimposed over image
Hearing our own imagined voice may play an important role in word processing. sutadimages/Shutterstock

A welcome validation

The study provides some welcome evidence for the lived experiences of some aphants, who are still often told their experiences are not different, but rather that they cannot describe their imagined experiences. Some people feel anxiety when they realise other people can have imagined experiences that they cannot. These feelings may be deepened when others assert they are merely confused or inarticulate.

In my own aphantasia research I have often quizzed crowds of people on their capacity to have imagined experiences.

Questions about the capacity to have imagined visual or audio sensations tend to be excitedly endorsed by a vast majority, but questions about imagined experiences of taste or smell seem to cause more confusion. Some people are adamant they can do this, including a colleague who says he can imagine what combinations of ingredients will taste like when cooked together. But other responses suggest subtypes of aphantasia may prove to be more common than we realise.

The authors of the recent study suggest the inability to imagine hearing yourself speak should be referred to as “anendophasia”, meaning without inner speech. Other authors had suggested anauralia (meaning without auditory imagery). Still other researchers have referred to all types of imagined sensation as being different types of “imagery”.

Having consistent names is important. It can help scientists “talk” to one another to compare findings. If different authors use different names, important evidence can be missed.

bare foot on mossy green grass
We’re starting to broaden our understanding of the senses and how we imagine them. Napat Chaichanasiri/Shutterstock

We have more than 5 senses

Debate continues about how many senses humans have, but some scientists reasonably argue for a number greater than 20.

In addition to the five senses of sight, smell, taste, touch and hearing, lesser known senses include thermoception (our sense of heat) and proprioception (awareness of the positions of our body parts). Thanks to proprioception, most of us can close our eyes and touch the tip of our index finger to our nose. Thanks to our vestibular sense, we typically have a good idea of which way is up and can maintain balance.

It may be tempting to give a new name to each inability to have a given type of imagined sensation. But this could lead to confusion. Another approach would be to adapt phrases that are already widely used. People who are unable to have imagined sensations commonly refer to ourselves as “aphants”. This could be adapted with a prefix, such as “audio aphant”. Time will tell which approach is adopted by most researchers.

Why we should keep investigating

Regardless of the names we use, the study of multiple types of inability to have an imagined sensation is important. These investigations could reveal the essential processes in human brains that bring about a conscious experience of an imagined sensation.

In time, this will not only lead to a better understanding of the diversity of humans, but may help uncover how human brains can create any conscious sensation. This question – how and where our conscious feelings are generated – remains one of the great mysteries of science.

Derek Arnold, Professor, School of Psychology, The University of Queensland

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

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  • Apricot vs Banana – Which is Healthier?

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    Our Verdict

    When comparing apricot to banana, we picked the banana.

    Why?

    Both are great, and it was close!

    In terms of macros, apricot has more protein, while banana has more carbs and fiber; both are low glycemic index foods, and we’ll call this category a tie.

    In the category of vitamins, apricot has more of vitamins A, C, E, and K, while banana has more of vitamins B1, B2, B3, B5, B6, B7, B9, and choline, giving banana the win by strength of numbers. It’s worth noting though that apricots are one of the best fruits for vitamin A in particular.

    When it comes to minerals, apricot has slightly more calcium, iron, and zinc, while banana has a lot more magnesium, manganese, potassium, and selenium, meaning a moderate win for banana here.

    Adding up the sections makes for an overall win for banana—but of course, by all means enjoy either or both!

    Want to learn more?

    You might like to read:

    Top 8 Fruits That Prevent & Kill Cancer ← we argue for apricots as bonus number 9 on the list

    Take care!

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  • Getting antivirals for COVID too often depends on where you live and how wealthy you are

    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.

    Medical experts recommend antivirals for people aged 70 and older who get COVID, and for other groups at risk of severe illness and hospitalisation from COVID.

    But many older Australians have missed out on antivirals after getting sick with COVID. It is yet another way the health system is failing the most vulnerable.

    CGN089/Shutterstock

    Who missed out?

    We analysed COVID antiviral uptake between March 2022 and September 2023. We found some groups were more likely to miss out on antivirals including Indigenous people, people from disadvantaged areas, and people from culturally and linguistically diverse backgrounds.

    Some of the differences will be due to different rates of infection. But across this 18-month period, many older Australians were infected at least once, and rates of infection were higher in some disadvantaged communities.

    How stark are the differences?

    Compared to the national average, Indigenous Australians were nearly 25% less likely to get antivirals, older people living in disadvantaged areas were 20% less likely to get them, and people with a culturally or linguistically diverse background were 13% less likely to get a script.

    People in remote areas were 37% less likely to get antivirals than people living in major cities. People in outer regional areas were 25% less likely.

    Dispensing rates by group. Grattan Institute

    Even within the same city, the differences are stark. In Sydney, people older than 70 in the affluent eastern suburbs (including Vaucluse, Point Piper and Bondi) were nearly twice as likely to have had an antiviral as those in Fairfield, in Sydney’s south-west.

    Older people in leafy inner-eastern Melbourne (including Canterbury, Hawthorn and Kew) were 1.8 times more likely to have had an antiviral as those in Brimbank (which includes Sunshine) in the city’s west.

    Why are people missing out?

    COVID antivirals should be taken when symptoms first appear. While awareness of COVID antivirals is generally strong, people often don’t realise they would benefit from the medication. They wait until symptoms get worse and it is too late.

    Frequent GP visits make a big difference. Our analysis found people 70 and older who see a GP more frequently were much more likely to be dispensed a COVID antiviral.

    Regular visits give an opportunity for preventive care and patient education. For example, GPs can provide high-risk patients with “COVID treatment plans” as a reminder to get tested and seek treatment as soon as they are unwell.

    Difficulty seeing a GP could help explain low antiviral use in rural areas. Compared to people in major cities, people in small rural towns have about 35% fewer GPs, see their GP about half as often, and are 30% more likely to report waiting too long for an appointment.

    Just like for vaccination, a GP’s focus on antivirals probably matters, as does providing care that is accessible to people from different cultural backgrounds.

    Care should go those who need it

    Since the period we looked at, evidence has emerged that raises doubts about how effective antivirals are, particularly for people at lower risk of severe illness. That means getting vaccinated is more important than getting antivirals.

    But all Australians who are eligible for antivirals should have the same chance of getting them.

    These drugs have cost more than A$1.7 billion, with the vast majority of that money coming from the federal government. While dispensing rates have fallen, more than 30,000 packs of COVID antivirals were dispensed in August, costing about $35 million.

    Such a huge investment shouldn’t be leaving so many people behind. Getting treatment shouldn’t depend on your income, cultural background or where you live. Instead, care should go to those who need it the most.

    Doctor types on laptop
    Getting antivirals shouldn’t depend on who your GP is. National Cancer Institute/Unsplash

    People born overseas have been 40% more likely to die from COVID than those born here. Indigenous Australians have been 60% more likely to die from COVID than non-Indigenous people. And the most disadvantaged people have been 2.8 times more likely to die from COVID than those in the wealthiest areas.

    All those at-risk groups have been more likely to miss out on antivirals.

    It’s not just a problem with antivirals. The same groups are also disproportionately missing out on COVID vaccination, compounding their risk of severe illness. The pattern is repeated for other important preventive health care, such as cancer screening.

    A 3-step plan to meet patients’ needs

    The federal government should do three things to close these gaps in preventive care.

    First, the government should make Primary Health Networks (PHNs) responsible for reducing them. PHNs, the regional bodies responsible for improving primary care, should share data with GPs and step in to boost uptake in communities that are missing out.

    Second, the government should extend its MyMedicare reforms. MyMedicare gives general practices flexible funding to care for patients who live in residential aged care or who visit hospital frequently. That approach should be expanded to all patients, with more funding for poorer and sicker patients. That will give GP clinics time to advise patients about preventive health, including COVID vaccines and antivirals, before they get sick.

    Third, team-based pharmacist prescribing should be introduced. Then pharmacists could quickly dispense antivirals for patients if they have a prior agreement with the patient’s GP. It’s an approach that would also work for medications for chronic diseases, such as cardiovascular disease.

    COVID antivirals, unlike vaccines, have been keeping up with new variants without the need for updates. If a new and more harmful variant emerges, or when a new pandemic hits, governments should have these systems in place to make sure everyone who needs treatment can get it fast.

    In the meantime, fairer access to care will help close the big and persistent gaps in health between different groups of Australians.

    Peter Breadon, Program Director, Health and Aged Care, Grattan Institute

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

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  • The Good, The Bad, & The Vigorously Debated

    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.

    This week in health news sees some pretty varied topics:

    One more reason to care about the gut-brain axis

    Stroke is a top killer in much of the industrialized world, usually making it into the top-few list on a per-country basis. And, it’s rising in prevalence, too. This is partly because our longevity is increasing so age-related things kill us more often, statistically, than age-unrelated things. But that’s only part of the reason; another is that our lifestyle (on the national level) is becoming more conducive to stroke. Diet is a large contributor to that, and gut health has now been identified as a key factor.

    What recent research has shown is that minutes after a stroke occurs, normal gut anatomy is disrupted, and cells responsible for gut barrier integrity are eroded, and bugs from the gut get into the blood, and arrive at the (newly damaged) brain vasculature, where the blood-brain barrier is often also compromised on account of the stroke.

    Because of this, critical to reducing post-stroke neuroinflammation (something that makes stroke damage more severe and recovery a lot harder) is improving the gut’s ability to heal itself quickly.

    This can be helped with a dose of Insulin-like Growth Factor (IGF-1), but there are other things that can help or hinder, and those other things are modifiable by us as individuals in our lifestyle choices (e.g. a gut-healthy diet with plenty of fiber, and avoiding gut-unhealthy things like sugar and alcohol that feed C. albicans growths that will put roots through your intestines and make holes as they do), because the better/worse your gut barrier integrity is to start with, the easier/harder it will be for your gut to repair itself quickly:

    Read in full: Healing the gut can reduce long-term impact of stroke

    Related: Stop Sabotaging Your Gut

    How about that seasonal lead-spiced hot drink?

    Lead contamination in ground spices has become a bit of an issue, ground turmeric has had quite some flak in this regard, and now the spotlight is on cinnamon.

    These reports, by the way, do not specify what kind of cinnamon (i.e. cassia vs Ceylon), however, clicking through to assorted sources and then doing our own digging finds that all cinnamon products we found listed as contaminated, were cassia cinnamon. This is unsurprising, as a) it’s cheaper b) it’s the kind most readily found on shelves in the US. That said, when it comes to Ceylon (sweet) cinnamon, absence of evidence is not evidence of absence, so that doesn’t mean they got the all-clear on lead contamination, but rather, that they haven’t received the same scrutiny as yet.

    It’s worth noting that cinnamon sticks have been found to have less contamination than ground cinnamon, though.

    It’s also worth noting that since some adulterated products have had lead added deliberately in increase the weight and darken the color, this is more likely to happen to cassia cinnamon than sweet cinnamon because cassia cinnamon is visibly darker, so adding a darkening agent to sweet cinnamon would just make it look like cassia (which no seller would want to do since cassia is the cheaper of the two).

    Read in full: Why lead-tainted cinnamon products have turned up on shelves, and what questions consumers should ask

    Related: Sweet Cinnamon vs Regular Cinnamon – Which is Healthier? ← this also covers toxicity issues, by the way

    A matter of life and death

    Assisted dying is currently legal in 10/40 US states, and Canada. Over in the UK, it’s being debated (and voted on) in Parliament today, at time of writing.

    While bodily autonomy discussions are usually quite straightforward arguments between the very separate camps of

    • “my body, my choice” vs
    • “they shouldn’t be allowed to do that”,

    …this one comes with a considerable middleground, because

    • “people should have to right to end things without extra suffering and on their own terms”, and
    • “many disabled people fear being placed in a position of having justify why they are not exercising their right to die when it might be cheaper and easier for others if they did”

    …are positions with a lot of potential overlap.

    In any case, we know most of our readers are in the US, but with a 10/40 split in US states (and some recent controversies in Canada), it’s likely a topic that’ll come up for most people at some point, so it’s good to understand it, and this is as good an opportunity as any:

    Read in full: How would the assisted dying bill work and what issues might it create?

    Related: Managing Your Mortality ← this talks about psychological/social considerations, as well as end-of-life care, palliative care (which is not quite the same thing!) and euthanasia in various forms, including the unofficial kind that you might want to be aware of if you want to avoid that happening.

    Take care!

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  • The Good Life – by Robert Waldinger, MD, and Marc Schulz, PhD

    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.

    For any who have thought “there must be some middle-ground between entirely subjective self-help books advising how to feel better, and sifting through clinical data on what actually affects people’s moods“, this book is exactly that middle-ground!

    Drs. Waldinger and Schultz went through the 80-year-long Harvard Study of Adult Development with a fine-toothed comb, and this book details—more readably—what they found.

    There are frequent references to data from the study. Not just numbers, though, people’s answers to questions, too. And how different factors about people’s lives affected their answers to the same questions.

    We hear from all ages, from young adults to octagenarians, and learn how attitudes (including: of the same people) change over time. Not because people are fickle, but because people grow… or become disillusioned. Or sometimes, both.

    We learn about the importance of money… And where that importance ends.

    We learn importance of relationships of various kinds, and this is certainly a recurring theme throughout the study—and thus, throughout the book.

    The book doesn’t just present data, though, it also presents actionable insights along the way.

    Bottom line: the combined wisdom and life-experiences of a lot of people provide a very “big picture” view of life, and what makes us happy, really. We highly recommend it!

    Pick up The Good Life from Amazon Today!

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  • Hope Not Nope – by Dr. Dillon Caswell

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    The author a Doctor of Physical Therapy, writes from both professional expertise and personal experience, when it comes to the treatment of long term injury / disability / chronic illness.

    His position here is that while suffering is unavoidable, we don’t have to suffer as much or as long as many might tell us. We can do things to crawl and claw our way to a better position, and we do not have to settle for any outcome we don’t want. That doesn’t mean there’s always a miracle cure—we don’t get to decide that—but we do get to decide whether we keep trying.

    Dr. Caswell’s advice is based mostly in psychology—a lot of it in sports psychology, which is no surprise given his long history as an athlete as well as his medical career.

    The style is very easy-reading, and a combination of explanation, illustrative (often funny) anecdotes, and a backbone of actual research to keep everything within the realms of science rather than mere wishful thinking—he strikes a good balance.

    Bottom line: if your current health outlook is more of an uphill marathon, then this book can give you the tools to carry yourself through the healthcare system that’s been made for numbers, not people.

    Click here to check out Hope Not Nope, and keep going!

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  • Plant vs Animal Protein

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    Plant vs Animal Protein: Head to Head

    Some people will obviously have strong ideological opinions here—for vegetarians and vegans, it’s no question, and for meat-eaters, it’s easy to be reactive to that and double-down on the bacon. But, we’re a health and productivity newsletter, so we’ll be sticking to the science.

    Which is better, healthwise?

    First, it depends how you go about it. Consider these options:

    • A piece of salmon
    • A steak
    • A hot dog
    • A hot dog, but plant-based
    • Textured soy protein (no additives)
    • Edamame (young soy) beans

    Three animal-based protein sources, three plant-based. We could render the competition simple (but very unfair) by pitting the hotdog against the edamame beans, or the plant-based hot dog against the piece of salmon. So let’s kick this off by saying:

    • There are good and bad animal-based protein sources
    • There are good and bad plant-based protein sources

    Whatever you choose, keep that in mind while you do. Less processed is better in either case. And if you do go for red meat, less is better, period.

    Picking the healthiest from each, how do the nutritional profiles look?

    They look good in both cases! One factor of importance is that in either case, our bodies will reduce the proteins we consume to their constituent amino acids, and then rebuild them into the specific proteins we actually need. Our bodies will do that regardless of the source, because we are neither a salmon nor a soy bean, for example.

    We need 20 specific amino acids, for our bodies to make the proteins we will use in our bodies. Of these, 9 are considered “essential”, meaning we cannot synthesize them and must get them from our diet,

    Animal protein sources contain all 9 of those. Plant based sources often don’t, individually, but by eating soy for example (which does contain them all) and/or getting multiple sources of protein from different plants, the 9 can be covered quite easily with little thought, just by having a varied diet.

    Meats are #1!

    • They’re number 1 for nutritional density
    • They’re number 1 for health risks, too

    So while plant-based diet adherents may need to consume more varied things to get all the nutrients necessary, meat-eaters won’t have that problem.

    Meat-eaters will instead have a different problem, of more diet-related health risks, e.g.

    • Cardiovascular disease
    • Metabolic disorders
    • Cancers

    So again, if eating (especially processed and/or red) meat, moderation is good. The Mediterranean Diet that we so often recommend, by default contains small amounts of lean animal protein.

    Which is better for building muscle?

    Assuming a broadly healthy balanced diet, and getting sufficient protein from your chosen source, they’re pretty equal:

    (both studies showed that both dietary approaches yielded results that showed no difference in muscle synthesis between the two)

    The bottom line is…

    Healthwise, what’s more important than whether you get your protein from animals or plants is that you eat foods that aren’t processed, and are varied.

    And if you want to do a suped-up Mediterranean Diet with less red meat, you might want to try:

    A Pesco-Mediterranean Diet With Intermittent Fasting: JACC Review Topic of the Week

    ^This is from a review in the Journal of the American College of Cardiology, and in few words, they recommend it very highly

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