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.
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.
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.
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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Pine Bark’s Next-Level Antioxidant Properties
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Pine Bark’s Next-Level Antioxidant Properties
Pine bark extract has been used by the indigenous peoples of N. America for a very long time, to treat a variety of ailments.
This one falls into the category of “things from traditional medicine that eventually got investigated and their scientific worth noticed by people from outside of those cultures”.
Not all pine trees!
If you happen to have pine trees near you, be aware that without sufficient botanical knowledge, you could find yourself bark-harvesting from the wrong tree—but many species of pine do have these qualities.
Useful (for this purpose) pine trees include, but are not limited to:
- Pinus banksiana
- Pinus massoniana
- Pinus pinaster
- Pinus radiata
- Pinus resinosa
- Pinus strobus
…which is already a fair list, but there are dozens more that have not been studied, and/or found lacking in medicinal qualities, and/or just didn’t make our list here today.
What does it do & How does it work?
We sneakily put those two questions together today because it’s easiest to explain in one:
The Pinus family in general has powerful antioxidant qualities, and not just like blueberries or coffee (wonderful as those are).
Rather, it has:
- Phenolic acids: these are the polyphenols found in many plant foods rich in antioxidants. These are great, but they aren’t the exciting part here.
- Catechins: these aren’t classified as antioxidants, but they are flavonoids that do the same job in a slightly different way
- Procyanidins: another class of flavonoids, and this is where pine bark really comes into its own
And yes, as ever, “those three things that always seem to come together”, it having these antioxidant properties means it is also anti-inflammatory and anti-cancer:
…and anti-aging:
Pleiotropic Effects of French Maritime Pine Bark Extract to Promote Healthy Aging
…which does of course mean that it almost certainly fights age-related cognitive decline, though studies for that have been animal studies so far, such as:
- Pine Bark Polyphenolic Extract Attenuates Amyloid-β and Tau Misfolding in a Model System of Alzheimer’s Disease Neuropathology
- Neuroprotective and Anti-Inflammatory Effects of Pinus densiflora Bark Extract in Gerbil Hippocampus Following Transient Forebrain Ischemia
- Neuroprotective Effects of Korean Red Pine ( Pinus densiflora) Bark Extract and Its Phenolics
- Pine bark treatment decelerates plaque development and improves spatial memory in Alzheimer’s disease mice
Where to get it?
As ever, we don’t sell it, but here’s an example product on Amazon for your convenience; we recommend shopping around though, as prices vary a lot!
Enjoy!
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The Knowledge That Harvard Medical School’s Clinical Instructor Dr. Monique Tello Thinks Everyone SHOULD Have About Heart Health
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Anyone (who has not had a double mastectomy, anyway) can get breast cancer.
Breast cancer, if diagnosed early (before it spreads), has a 98% survival rate.
That survival rate drops to 31% if diagnosed after it has spread through the body.
(The US CDC’s breast cancer “stat bite” page has more stats and interactive graphs, so click here to see those charts and get the more detailed low-down on mortality/survival rates with various different situations)
We think that the difference between 98% and 31% survival rates is more than enough reason to give ourselves a monthly self-check at the very least! You’ve probably seen how-to diagrams before, but here are instructions for your convenience:
This graphic created by the Jordan Breast Cancer Program (check them out, as they have lots of resources)
If you don’t have the opportunity to take matters into your own hands right now, rather than just promise yourself “I’ll do that later”, take this free 4-minute Breast Health Assessment from Aurora Healthcare. Again, we think the difference early diagnosis can make to your survival chances make these tests well worth it.
Lest we forget, men can also get breast cancer (the CDC has a page for men too), especially if over 50. But how do you check for breast cancer, when you don’t have breasts in the commonly-understood sense of the word?
So take a moment to do this (yes, really actually do it!), and set a reminder in your calendar to repeat it monthly—there really is no reason not to! Take care of yourself; you’re important.
Pssst! Did you scroll past the diagrams, looking for the online 4-minute test promised by the subtitle? If so, scroll back up; the link is in the middle!
Harvard Medical School’s Clinical Instructor’s Five-Point Plan for Heart Health
Dr. Monique Tello, M.D., M.P.H., is a practicing physician at Massachusetts General Hospital, director of research and academic affairs for the MGH DGM Healthy Lifestyle Program, clinical instructor at Harvard Medical School, and author of the evidence-based lifestyle change guide Healthy Habits for Your Heart.
Here are what she says are the five most important factors to help keep your ticker ticking:
5. Have (at most) a moderate alcohol intake! While there are polyphenols such as resveratrol in red wine that could boost heart health, there’s so little per glass that you may need 100–1000 glasses to get the dosage that provides benefits in mouse studies. If you’re not a mouse, it may not be as beneficial, and Dr. Tello recommends drinking no more than one glass per day of any alcohol. What constitutes a glass? It varies from one kind of drink to another, so here’s a handy guide.
4. Don’t smoke. Best of all to never start. But if you did, quit. Simple as that. There is no healthy amount of smoking. While paradoxically, quitting smoking may of course be stressful to you, the long term gains are considered more than worth it. As with all advice, do consult your own physician for guidance, as individual circumstances may vary, and that may change the best approach for you.
3. Maintain a healthy body weight. While BMI (Body Mass Index) is not a perfect system, it’s a system in popular use, and Dr. Tello recommends keeping a BMI between 18.5 and 24.9.
What’s your BMI? It takes into account your height and weight; here’s a Quick BMI Calculator for your convenience.
2. Keep a healthy level of physical activity—which ideally means at least 30 minutes per day vigorous activity, but obviously if you’re not used to this, take it slowly and build up over time. Even just small lifestyle changes (walking where possible, taking the stairs instead of the elevator where possible, etc) can add up to a big difference.
1. Enjoy a healthy diet. This is the single most important thing, and the best modern scientific consensus holds that the best diet contains plenty of vegetables, fruits and nuts, whole grains, and omega-3 fatty acids, while it avoids processed meats, sugar-sweetened beverages, trans fats (what are trans fats?), and too much sodium.
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Savory Protein Crêpe
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Pancakes have a bad reputation healthwise, but they don’t have to be so. Here’s a very healthy crêpe recipe, with around 20g of protein per serving (which is about how much protein most people’s body’s can use at one sitting) and a healthy dose of fiber too:
You will need
Per crêpe:
- ½ cup milk (your preference what kind; we recommend oat milk for this)
- 2 oz chickpea flour (also called garbanzo bean flour, or gram flour)
- 1 tsp nutritional yeast
- 1 tsp ras el-hanout (optional but tasty and contains an array of beneficial phytochemicals)
- 1 tsp dried mixed herbs
- ⅛ tsp MSG or ¼ tsp low-sodium salt
For the filling (also per crêpe):
- 6 cherry tomatoes, halved
- Small handful baby spinach
- Extra virgin olive oil
Method
(we suggest you read everything at least once before doing anything)
1) Mix the dry crêpe ingredients in a bowl, and then stir in the milk, whisking to mix thoroughly. Leave to stand for at least 5 minutes.
2) Meanwhile, heat a little olive oil in a skillet, add the tomatoes and fry for 1 minute, before adding the spinach, stirring, and turning off the heat. As soon as the spinach begins to wilt, set it aside.
3) Heat a little olive oil either in the same skillet (having been carefully wiped clean) or a crêpe pan if you have one, and pour in a little of the batter you made, tipping the pan so that it coats the pan evenly and thinly. Once the top is set, jiggle the pan to see that it’s not stuck, and then flip your crêpe to finish on the other side.
If you’re not confident of your pancake-tossing skills, or your pan isn’t good enough quality to permit this, you can slide it out onto a heatproof chopping board, and use that to carefully turn it back into the pan to finish the other side.
4) Add the filling to one half of the crêpe, and fold it over, pushing down at the edges with a spatula to make a seal, cooking for another 30 seconds or so. Alternatively, you can just serve a stack of crêpes and add the filling at the table, folding or rolling per personal preference:
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
- Three Daily Servings of Beans?
- Lycopene’s Benefits For The Gut, Heart, Brain, & More
- Our Top 5 Spices: How Much Is Enough For Benefits?
- Sea Salt vs MSG – Which is Healthier?
Take care!
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Slowing the Progression of Cataracts
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Understanding Cataracts
Cataracts are natural and impact everyone.
That’s a bit of a daunting opening line, but as Dr. Michele Lee, a board-certified ophthalmologist, explains, cataracts naturally develop with age, and can be accelerated by factors such as trauma, certain medications, and specific eye conditions.
We know how important your vision is to you (we’ve had great feedback about the book Vision for Life) as well as our articles on how glasses impact your eyesight and the effects of using eye drops.
While complete prevention isn’t possible, steps such as those mentioned below can be taken to slow their progression.
Here is an overview of the video’s first 3 takeaways. You can watch the whole video below.
Protect Your Eyes from Sunlight
Simply put, UV light damages lens proteins, which (significantly) contributes to cataracts. Wearing sunglasses can supposedly prevent up to 20% of cataracts caused by UV exposure.
Moderate Alcohol Consumption
We all, at some level, know that alcohol consumption doesn’t do us any good. Your eye health isn’t an exception to the rule; alcohol has been shown to contribute to cataract development.
If you’re looking at reducing your alcohol use, try reading this guide on lowering, or eradicating, alcohol consumption.
Avoid Smoking
Smokers are 2-3 times more likely to develop cataracts. Additionally, ensure good ventilation while cooking to avoid exposure to harmful indoor smoke.
See all 5 steps in the below video:
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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Why do I poo in the morning? A gut expert explains
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No, you’re not imagining it. People really are more likely to poo in the morning, shortly after breakfast. Researchers have actually studied this.
But why mornings? What if you tend to poo later in the day? And is it worth training yourself to be a morning pooper?
To understand what makes us poo when we do, we need to consider a range of factors including our body clock, gut muscles and what we have for breakfast.
Here’s what the science says.
H_Ko/Shutterstock So morning poos are real?
In a UK study from the early 1990s, researchers asked nearly 2,000 men and women in Bristol about their bowel habits.
The most common time to poo was in the early morning. The peak time was 7-8am for men and about an hour later for women. The researchers speculated that the earlier time for men was because they woke up earlier for work.
About a decade later, a Chinese study found a similar pattern. Some 77% of the almost 2,500 participants said they did a poo in the morning.
But why the morning?
There are a few reasons. The first involves our circadian rhythm – our 24-hour internal clock that helps regulate bodily processes, such as digestion.
For healthy people, our internal clock means the muscular contractions in our colon follow a distinct rhythm.
There’s minimal activity in the night. The deeper and more restful our sleep, the fewer of these muscle contractions we have. It’s one reason why we don’t tend to poo in our sleep.
Your lower gut is a muscular tube that contracts more strongly at certain times of day. Vectomart/Shutterstock But there’s increasing activity during the day. Contractions in our colon are most active in the morning after waking up and after any meal.
One particular type of colon contraction partly controlled by our internal clock are known as “mass movements”. These are powerful contractions that push poo down to the rectum to prepare for the poo to be expelled from the body, but don’t always result in a bowel movement. In healthy people, these contractions occur a few times a day. They are more frequent in the morning than in the evening, and after meals.
Breakfast is also a trigger for us to poo. When we eat and drink our stomach stretches, which triggers the “gastrocolic reflex”. This reflex stimulates the colon to forcefully contract and can lead you to push existing poo in the colon out of the body. We know the gastrocolic reflex is strongest in the morning. So that explains why breakfast can be such a powerful trigger for a bowel motion.
Then there’s our morning coffee. This is a very powerful stimulant of contractions in the sigmoid colon (the last part of the colon before the rectum) and of the rectum itself. This leads to a bowel motion.
How important are morning poos?
Large international surveys show the vast majority of people will poo between three times a day and three times a week.
This still leaves a lot of people who don’t have regular bowel habits, are regular but poo at different frequencies, or who don’t always poo in the morning.
So if you’re healthy, it’s much more important that your bowel habits are comfortable and regular for you. Bowel motions do not have to occur once a day in the morning.
Morning poos are also not a good thing for everyone. Some people with irritable bowel syndrome feel the urgent need to poo in the morning – often several times after getting up, during and after breakfast. This can be quite distressing. It appears this early-morning rush to poo is due to overstimulation of colon contractions in the morning.
Can you train yourself to be regular?
Yes, for example, to help treat constipation using the gastrocolic reflex. Children and elderly people with constipation can use the toilet immediately after eating breakfast to relieve symptoms. And for adults with constipation, drinking coffee regularly can help stimulate the gut, particularly in the morning.
A disturbed circadian rhythm can also lead to irregular bowel motions and people more likely to poo in the evenings. So better sleep habits can not only help people get a better night’s sleep, it can help them get into a more regular bowel routine.
A regular morning coffee can help relieve constipation. Caterina Trimarchi/Shutterstock Regular physical activity and avoiding sitting down a lot are also important in stimulating bowel movements, particularly in people with constipation.
We know stress can contribute to irregular bowel habits. So minimising stress and focusing on relaxation can help bowel habits become more regular.
Fibre from fruits and vegetables also helps make bowel motions more regular.
Finally, ensuring adequate hydration helps minimise the chance of developing constipation, and helps make bowel motions more regular.
Monitoring your bowel habits
Most of us consider pooing in the morning to be regular. But there’s a wide variation in normal so don’t be concerned if your poos don’t follow this pattern. It’s more important your poos are comfortable and regular for you.
If there’s a major change in the regularity of your bowel habits that’s concerning you, see your GP. The reason might be as simple as a change in diet or starting a new medication.
But sometimes this can signify an important change in the health of your gut. So your GP may need to arrange further investigations, which could include blood tests or imaging.
Vincent Ho, Associate Professor and clinical academic gastroenterologist, Western Sydney University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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From Painkillers To Hunger-Killers
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Here’s this week’s selection of health news discoveries, the science behind them, what they mean for you, and where you can go from there:
Killing more than pain
It’s well-known that overuse of opioids can lead to many problems, and here’s another one: messing with the endocrine system. This time, mostly well-evidenced in men—however, the researchers are keen to point out that absence of evidence is very much not evidence of absence, hence “the hidden effects” in the headline below. It’s not that the effects are hard to see—it’s that a lot of the research has yet to be done. For now, though, we know at the very least that there’s an association between opioid use and hyperprolactinemia in men. The same research also begins to shine a light on the effects of opioid use on the hypothalamic-pituitary system and bone health, too:
Read in full: The hidden effects of opioid use on the endocrine system
Related: The 7 Approaches To Pain Management
Gut microbiome dysbiosis may lead to slipping disks
These things sound quite unconnected, but the association is strong. The likely mechanism of action is that the gut dysbiosis influences systemic inflammation, and thus spinal health—because the gut-spine axis cannot really be disconnected (while you’re alive, at least). It’s especially likely if you’re over 50 and female:
Read in full: Are back problems influenced by your gut?
Related: Is Your Gut Leading You Into Osteoporosis?
The Internet is really really great (for brains)
It’s common to see many articles on the Internet telling us, paradoxically, that we should spend less time on the Internet. However… Remember when in the 90s, it was all about “the information superhighway”? It turns out, the fact that it’s more like “the information spaghetti junction” these days doesn’t change the fact that stimulation is good for our brains, and daily Internet use improves memory, because of the different way that we index and store information that came from a virtual source. While there are parts of your brain for “things at home” and “things at the local supermarket”, there are also parts for “things at 10almonds” and “things at Facebook” and so forth. You are, in effect, building a vast mental library as you surf:
Read in full: Daily internet use supercharges your memory!
Related: Make Social Media Work For Your Mental Health
Fall back
Around this time of year in many places in the Northern Hemisphere, the clocks go back an hour (it’s next weekend in the US and Canada, by the way, and this weekend in most of Europe). Many enjoy this as the potential for an extra hour’s sleep, but for night owls, it can be more of a nuisance than a benefit—throwing out what’s often an already difficult relationship with the clock, and presenting challenges both practical and physiological (different processing of melatonin, for instance). Here be science:
Read in full: Why night owls struggle more when the clocks go back
Related: Early Bird Or Night Owl? Genes vs Environment
Can you outrun your hunger?
It seems so, though benefits are strongest in women. We say “outrun”, though this study did use stationary cycling. To put it in few words, intense exercise (but not moderate exercise) significantly reduced acylated ghrelin (hunger hormone) levels, and subjective reports of hunger, especially in women:
Read in full: Study finds intense exercise may suppress appetite in healthy humans
Related: 3 Appetite Suppressants Better Than Ozempic
Take care!
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