Sweet Cinnamon vs Regular Cinnamon – Which is Healthier?
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.
Our Verdict
When comparing sweet cinnamon to regular cinnamon, we picked the sweet.
Why?
In this case, it’s not close. One of them is health-giving and the other is poisonous (but still widely sold in supermarkets, especially in the US and Canada, because it is cheaper).
It’s worth noting that “regular cinnamon” is a bit of a misnomer, since sweet cinnamon is also called “true cinnamon”. The other cinnamon’s name is formally “cassia cinnamon”, but marketers don’t tend to call it that, preferring to calling it simply “cinnamon” and hope consumers won’t ask questions about what kind, because it’s cheaper.
Note: this too is especially true in the US and Canada, where for whatever reason sweet cinnamon seems to be more difficult to obtain than in the rest of the world.
In short, both cinnamons contain cinnamaldehyde and coumarin, but:
- Sweet/True cinnamon contains only trace amounts of coumarin
- Regular/Cassia cinnamon contains about 250x more coumarin
Coumarin is heptatotoxic, meaning it poisons the liver, and the recommended safe amount is 0.1mg/kg, so it’s easy to go over that with just a couple of teaspoons of cassia cinnamon.
You might be wondering: how can they get away with selling something that poisons the liver? In which case, see also: the alcohol aisle. Selling toxic things is very common; it just gets normalized a lot.
Cinnamaldehyde is responsible for cinnamon’s healthier properties, and is found in reasonable amounts in both cinnamons. There is about 50% more of it in the regular/cassia than in the sweet/true, but that doesn’t come close to offsetting the potential harm of its higher coumarin content.
Want to learn more?
You may like to read:
- A Tale Of Two Cinnamons ← this one has more of the science of coumarin toxicity, as well as discussing (and evidencing) cinnamaldehyde’s many healthful properties against inflammation, cancer, heart disease, neurodegeneration, etc
Enjoy!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Recommended
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
How (And Why) To Train Your Pre-Frontal Cortex
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.
Dr. Chapman’s Keys For Mental Focus
This is Dr. Sandra Chapman; she’s a cognitive neuroscientist, on a mission to, in her words, further our understanding of:
- what makes the brain stronger, faster and last longer
- what enhances human cognitive capacity, and
- what enhances the underlying brain systems across the lifespan.
To this end, she’s also the founder and Chief Director of the Center For Brain Health, where she has worked on her mission for the past 25 years (clocking up hundreds of peer-reviewed publications to her name), as well as being a professor of Behavioral and Brain Sciences at UT Dallas.
What does she want us to know?
Get your brain into gear
When it comes to your brainpower, it is “use it or lose it”, but it is also perfectly possible to use it and lose it.
Why?
Very often, what we are using our brains for is high-strain, low-yield stuff, such as multitasking, overthinking, or overthinking while multitasking. And to make it worse, we often do it without sufficient rest.
This is the equivalent of owning a Ferrari but trying to drive it in second and third gear at once by switching between the two as rapidly as possible. And doing that for 18 hours each day.
Suffice it to say, you’ll be going nowhere quickly.
An alternative “use” of brainpower is low-strain, low-yield stuff, such as having to pay close attention to a boring conversation. It’s enough to stop your mind from doing anything else, but not enough to actually stimulate you.
This is the equivalent of owning a Ferrari but keeping it idling. The wear and tear is minimal this time, but you’re not actually going anywhere either.
Better, of course, are the other two quadrants:
- low-strain, high-yield: consistently using our brain in relatively non-taxing ways that encourage its development
- high-strain, high-yield: here the Ferrari metaphor definitely fails, because unlike cars, our bodies (including our brains) are machines that benefit from judicious regular progressive overloading (but just by a bit, and with adequate recovery time between overloads).
See also: 12 Weeks To Measurably Boost Your Brain
How to do the “low-strain, low-yield” part
When it comes to “what’s the most important part of the brain to help in the face of cognitive decline?” the usual answer is either to focus on memory (hippocampi) or language (various parts, but for example Wernicke’s area and Broca’s area), since people most fear losing memory, and language is very important both socially and practically.
Those are indeed critical, and we at 10almonds stand by them, but Dr. Chapman (herself having originally trained as speech and language pathologist!) makes a strong case for adding a third brain part to the list.
Specifically, she advocates for strengthening the pre-frontal cortex, which is responsible for inhibition, task-switching, working memory, and cognitive flexibility. If that seems like a lot, do remember it’s a whole cortex and not one of the assorted important-but-small brain bits we mentioned above.
How? She has developed training programs for this, based on what she calls Strategic Memory Advanced Reasoning Tactics (SMART), to support support attention, planning, judgment and emotional management.
You can read more about those programs here:
Center For Brain Health | Our Programs
Participation in those is mostly not free, however, if you join their…
Center For Brain Health | BrainHealth Project
…then they will periodically invite you to join pilot programs, research programs, and the like, which will either be free or they-pay-you affairs—because this is how science is done, and you can read about yourself (anonymized, of course) later in peer-reviewed papers of the kind we often cite here.
If you’re not interested in any of that though, we will say that according to Dr. Chapman, the keys are:
Inhibition: be conscious of this function of your brain, and develop it. This is the function of your brain that stops you from making mistakes—or put differently: stops you from saying/doing something stupid.
Switching: do this consciously; per “I am now doing this task, now I am switching to this other task”, rather than doing the gear-grinding thing we discussed earlier
Working memory: this is effectively your brain’s RAM. Unlike the RAM of a computer (can be enhanced by adding another chip or replacing with a bigger chip), our brain’s RAM can be increased by frequent use, and especially by judicious use of progressive overloading (with rests between!) which we’ll discuss in the high-strain, high-yield section.
Flexibility: this is about creative problem-solving, openness to new ideas, and curiosity
See also: Curiosity Kills The Neurodegeneration
How to do the “high-strain, high-yield” part
Delighting this chess-playing writer, Dr. Chapman recommends chess. Although, similar games such as go (a Chinese game that looks simpler than chess but actually requires more calculation) work equally well too.
Why?
Games like chess and go cause structural changes that are particularly helpful, in terms of engaging in such foundational tasks as learning, abstract reasoning, problem-solving and self-control:
Chess Practice as a Protective Factor in Dementia
Basically, it checks (so to speak) a lot of boxes, especially for the pre-frontal cortex. Some notes:
- Focusing on the game is required for brain improvement; simply pushing wood casually will not do it. Ideally, calculating several moves ahead will allow for strong working memory use (because to calculate several moves ahead, one will have to hold increasingly many possible positions in the mind while doing so).
- The speed of play must be sufficiently slow as to allow not only for thinking, but also for what in chess is called “blunder-checking”, in other words, having decided on one’s move, pausing to consider whether it is a mistake, and actively trying to find evidence that it is. This is the crucial “inhibition habit”, and when one does it reflexively, one will make fewer mistakes. Tying this to dementia, see for example how one of the common symptoms of dementia is falling for scams that one wouldn’t have previously. How did cognitive decline make someone naïve? It didn’t, per se; it just took away their ability to, having decided what to do, pause to consider whether it was a mistake, and actively trying to find evidence that it is.
- That “conscious switching” that we talked about, rather than multitasking? In chess, there is a difference between strategy and tactics. Don’t worry about what that difference is for now (learn it if you want to take up chess), but know that strong players will only strategize while it is their opponent’s turn, and only calculate (tactics) while it is their own turn. It’s very tempting to flit constantly between one and the other, but chess requires players to have the mental discipline be able to focus on one task or the other and stick with that task until it’s the appointed time to switch.
If you feel like taking up chess, this site (and related app, if you want it) is free (it’s been funded by voluntary donations for a long time now) and good and even comes with free tuition and training tools: LiChess.org
Here’s another site that this writer (hi, it’s me) personally uses—it has great features too, but many are paywalled (I’m mostly there just because I’ve been there nearly since its inception, so I’m baked into the community now): Chess.com
Want to know more?
You might like this book by Dr. Chapman, which we haven’t reviewed yet but it did inform large parts of today’s article:
Make Your Brain Smarter: Increase Your Brain’s Creativity, Energy, and Focus – by Dr. Sandra Chapman
Enjoy!
Share This Post
What’s Your Plant Diversity Score?
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.
We speak often about the importance of dietary diversity, and of that, especially diversity of plants in one’s diet, but we’ve never really focused on it as a main feature, so that’s what we’re going to do today.
Specifically, you may have heard the advice to “eat 30 different kinds of plants per week”. But where does that come from, and is it just a number out of a hat?
The magic number?
It is not, in fact, a number out of a hat. It’s from a big (n=11,336) study into what things affect the gut microbiome for better or for worse. It was an observational population study, championing “citizen science” in which volunteers tracked various things and collected and sent in various samples for analysis.
The most significant finding of this study was that those who consumed more than 30 different kinds of plants per week, had a much better gut microbiome than those who consumed fewer than 10 different kinds of plants per week (there is a bell curve at play, and it gets steep around 10 and 30):
American Gut: an Open Platform for Citizen Science Microbiome Research
Why do I care about having a good gut microbiome?
Gut health affects almost every other kind of health; it’s been called “the second brain” for the various neurotransmitters and other hormones it directly makes or indirectly regulates (which in turn affect every part of your body), and of course there is the vagus nerve connecting it directly to the brain, impacting everything from food cravings to mood swings to sleep habits.
See also:
Any other benefits?
Yes there are! Let’s not forget: as we see often in our “This or That” section, different foods can be strong or weak in different areas of nutrition, so unless we want to whip out a calculator and database every time we make food choices, a good way to cover everything is to simply eat a diverse diet.
And that goes not just for vitamins and minerals (which would be true of animal products also), but in the case of plants, a wide range of health-giving phytochemicals too:
Measuring Dietary Botanical Diversity as a Proxy for Phytochemical Exposure
Ok, I’m sold, but 30 is a lot!
It is, but you don’t have to do all 30 in your first week of focusing on this, if you’re not already accustomed to such diversity. You can add in one or two new ones each time you go shopping, and build it up.
As for “what counts”: we’re counting unprocessed or minimally-processed plants. So for example, an apple is an apple, as are dried apple slices, as is apple sauce. Any or all of those would count as 1 plant type.
Note also that we’re counting types, not totals. If you’re having apple slices with apple sauce, for some reason? That still only counts as 1.
However, while apple sauce still counts as apples (minimally processed), you cannot eat a cake and say “that’s 2 because there was wheat and sugar cane somewhere in its dim and distant history”.
Nor is your morning espresso a fruit (by virtue of coffee beans being the fruit of the plant, botanically speaking). However, it would count as 1 plant type if you eat actual coffee beans—this writer has been known to snack on such; they’re only healthy in very small portions though, because their saturated fat content is a little high.
You, however, count grains in general, as well as nuts and seeds, not just fruits and vegetables. As for herbs and spices, they count for ¼ each, except for salt, which might get lumped in with spices but is of course not a plant.
How to do it
There’s a reason we’re doing this in our Saturday Life Hacks edition. Here are some tips for getting in far more plants than you might think, a lot more easily than you might think:
- Buy things ready-mixed. This means buying the frozen mixed veg, the frozen mixed chopped fruit, the mixed nuts, the mixed salad greens etc. This way, when you’re reaching for one pack of something, you’re getting 3–5 different plants instead of one.
- Buy things individually, and mix them for storage. This is a more customized version of the above, but in the case of things that keep for at least a while, it can make lazy options a lot more plentiful. Suddenly, instead of rice with your salad you’re having sorghum, millet, buckwheat, and quinoa. This trick also works great for dried berries that can just be tipped into one’s morning oatmeal. Or, you know, millet, oats, rye, and barley. Suddenly, instead of 1 or 2 plants for breakfast you have maybe 7 or 8.
- Keep a well-stocked pantry of shelf-stable items. This is good practice anyway, in case of another supply-lines shutdown like at the start of the COVID-19 pandemic. But for plant diversity, it means that if you’re making enchiladas, then instead using kidney beans because that’s what’s in the cupboard, you can raid your pantry for kidney beans, black beans, pinto beans, fava beans, etc etc. Yes, all of them; that’s a list, not a menu.
- Shop in the discount section of the supermarket. You don’t have shop exclusively there, but swing by that area, see what plants are available for next to nothing, and buy at least one of each. Figure out what to do with it later, but the point here is that it’s a good way to get suggestions of plants that you weren’t actively looking for—and novelty is invariably a step into diversity.
- Shop in a different store. You won’t be able to beeline the products you want on autopilot, so you’ll see other things on the way. Also, they may have things your usual store doesn’t.
- Shop in person, not online—at least as often as is practical. This is because when shopping for groceries online, the store will tend to prioritize showing you items you’ve bought before, or similar items to those (i.e. actually the same item, just a different brand). Not good for trying new things!
- Consider a meal kit delivery service. Because unlike online grocery shopping, this kind of delivery service will (usually) provide you with things you wouldn’t normally buy. Our sometimes-sponsor Purple Carrot is a fine option for this, but there are plenty of others too.
- Try new recipes, especially if they have plants you don’t normally use. Make a note of the recipe, and go out of your way to get the ingredients; if it seems like a chore, reframe it as a little adventure instead. Honestly, it’s things like this that keep us young in more ways than just what polyphenols can do!
- Hide the plants. Whether or not you like them; hide them just because it works in culinary terms. By this we mean; blend beans into that meaty sauce; thicken the soup with red lentils, blend cauliflower into the gravy. And so on.
One more “magic 30”, while we’re at it…
30g fiber per day makes a big (positive) difference to many aspects of health. Obviously, plants are where that comes from, so there’s a big degree of overlap here, but most of the tips we gave are different, so for double the effectiveness, check out:
Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
Enjoy!
Share This Post
Cure – by Dr. Jo Marchant
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.
The subtitle here, “a journey into the science of mind over body”, prompts an immediate question: is this book actually about science?
And yes, yes it is. It’s not about “positive energy” or “tapping into your divine essence” or anysuch. It’s about science, and scientific studies.
The author’s PhD is in genetics and medical microbiology, not metaphysics or something.
For those of us who read a lot of clinical studies about a lot of things (hi, regular researcher/writer here), we’re very used to placebo being used as a control in medical science.
“This drug performed no better than placebo” is generally considered a disappointing statement… But what if the placebo was already having a profound effect? Shouldn’t that be worthy of note too?
Dr. Marchant looks at more than just drugs, though, and also looks into the science (complete with EEGs and such) of hypnosis and virtual reality.
The writing style here is very accessible without skimping on science. This is to be expected; Dr. Marchant also has an MSc in science communication, and spent a time as senior editor of New Scientist magazine.
This isn’t a how-to book, but there are some practical takeaways too, specific things we can do to augment (or avoid sabotaging) any medications we take, for example.
Bottom line: placebo effect (and its evil twin, the nocebo effect) has a profound impact on all of us whether we want it or not, so we might as well learn about how it works and how to leverage it. This book gives a very good, hard science grounding.
Click here to check out “Cure” and get the most out of whatever you take (or do) for your health!
Share This Post
Related Posts
Chorus or Cacophony? Cicada Song Hits Some Ears Harder Than Others
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.
ST. LOUIS — Shhhooo. Wee-uuu. Chick, chick, chick. That’s the sound of three different cicada species. For some people, those sounds are the song of the summer. Others wish the insects would turn it down. The cacophony can be especially irritating for people on the autism spectrum who have hearing sensitivity.
Warren Rickly, 14, lives in suburban south St. Louis County, Missouri. Warren, who has autism, was at the bus stop recently waiting for his younger brother when the sound of cicadas became too much to bear.
“He said it sounds like there’s always a train running next to him,” his mother, Jamie Reed, said.
Warren told her the noise hurt.
Starting this spring, trillions of the red-eyed insects crawled their way out of the ground across the Midwest and Southeast. It’s part of a rare simultaneous emergence of two broods — one that appears every 13 years, the other every 17.
The noisy insects can be stressful. People with autism can have a sensitivity to texture, brightness, and sound.
“I think the difference for individuals with autism is the level of intensity or how upsetting some of these sensory differences are,” said Rachel Follmer, a developmental and behavioral pediatrician at Lurie Children’s Hospital in Chicago.
“It can get to the extreme where it can cause physical discomfort,” she said.
When a large group of cicadas starts to sing, the chorus can be as loud as a motorcycle. Researchers at the University of Missouri-St. Louis this year crowdsourced cicada noise levels as high as 86 decibels, about as loud as a food blender.
That can be stressful, not melodic, Follmer said.
To help children cope, she suggests giving them a primer before they encounter a noisy situation. For cicadas, that could mean explaining what they are, that they don’t bite or sting, and that they’ll be here for just a short time.
“When something is uncomfortable, not having power in that situation can be very scary for a lot of individuals, whether you’re on the spectrum or not,” Follmer said.
Jamie Reed’s family has been using this and other strategies to help her son. Warren wears noise-canceling headphones, listens to music, and has been teaching himself about cicadas.
“For him, researching it and looking into it I think grounds him a little bit,” Reed said.
Fatima Husain is a professor and neuroscientist at the University of Illinois Urbana-Champaign and studies how the brain processes sound. She said people with tinnitus may also struggle with cicada song.
Tinnitus, a ringing or other noise in the ears, is a person’s perception of sound without an external source.
“Some people say it sounds like buzzing, like wind blowing through trees, and ironically, quite a few people say it sounds like cicadas,” Husain said.
For most people with tinnitus the cicada’s song is harmless background noise, according to Husain, but for others the ringing can prevent easy conversation or sleep. Those with tinnitus are also more likely to have anxiety or depression. A loud persistent sound, like singing cicadas, can make someone’s tinnitus worse, Husain said.
It’s not always bad, though. The cicada’s song can also be a relief.
For some, tinnitus gets worse in a quiet environment. Husain said she’s seen reports this year of patients saying the cicadas’ song has been like soothing white noise.
“The sound is loud enough that in some ways it’s drowning their internal tinnitus,” Husain said.
As loud as the cicadas can be, they won’t necessarily damage anyone’s hearing, according to the Centers for Disease Control and Prevention. Hearing loss builds up over time from repeated exposure to loud sounds. Cicadas aren’t loud enough for long enough to do lasting damage, Husain said.
Everyday sources of noise come with a higher risk. Husain said constant exposure to loud highways, an airport, industrial sites, or household appliances like blenders and hair dryers can be a concern. And they can take a toll on someone’s emotional well-being.
“If you are being exposed to very loud sounds for a part of your school day or your working day, it may make you more stressed out; it may make you more angry about things,” she said.
Unlike the highway or an airport, cicadas won’t be around long. Most of the current brood will be gone in the next few weeks. Just in time for another noisy summer event: the Fourth of July.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.
Subscribe to KFF Health News’ free Morning Briefing.
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
How To Nap Like A Pro (No More “Sleep Hangovers”!)
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.
How To Be An Expert Nap-Artist
There’s a lot of science to say that napping can bring us health benefits—but mistiming it can just make us more tired. So, how to get some refreshing shut-eye, without ending up with a case of the midday melatonin blues?
First, why do we want to nap?
Well, maybe we’re just tired, but there are specific benefits even if we’re not. For example:
What can go wrong?
There are two main things that can go wrong, physiologically speaking:
- We can overdo it, and not sleep well at night
- We can awake groggy and confused and tired
The first is self-explanatory—it messes with the circadian rhythm. For this reason, we should not sleep more than 90 minutes during the day. If that seems like a lot, and maybe you’ve heard that we shouldn’t sleep more than half an hour, there is science here, so read on…
The second is a matter of sleep cycles. Our brain naturally organizes our sleep into multiples of 20-minute segments, with a slight break of a few minutes between each. Consequently, naps should be:
- 25ish minutes
- 40–45 minutes
- 90ish minutes
If you wake up mid-cycle—for example, because your alarm went off, or someone disturbed you, or even because you needed to pee, you will be groggy, disoriented, and exhausted.
For this reason, a nap of one hour (a common choice, since people like “round” numbers) is a recipe for disaster, and will only work if you take 15 minutes to fall asleep. In which case, it’d really be a nap of 45 minutes, made up of two 20-minute sleep cycles.
Some interruptions are better/worse than others
If you’re in light or REM sleep, a disruption will leave you not very refreshed, but not wiped out either. And as a bonus, if you’re interrupted during a REM cycle, you’re more likely to remember your dreams.
If you’re in deep sleep, a disruption will leave you with what feels like an incredible hangover, minus the headache, and you’ll be far more tired than you were before you started the nap.
The best way to nap
Taking these factors into account, one of the “safest” ways to nap is to set your alarm for the top end of the time-bracket above the one you actually want to nap for (e.g., if you want to nap for 25ish minutes, set your alarm for 45).
Unless you’re very sleep-deprived, you’ll probably wake up briefly after 20–25 minutes of sleep. This may seem like nearer 30 minutes, if it took you some minutes to fall asleep!
If you don’t wake up then, or otherwise fail to get up, your alarm will catch you later at what will hopefully be between your next sleep cycles, or at the very least not right in the middle of one.
When you wake up from a nap before your alarm, get up. This is not the time for “5 more minutes” because “5 more minutes” will never, ever, be refreshing.
Rest well!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails:
Non-Alcohol Mouthwash vs Alcohol Mouthwash – Which is Healthier?
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.
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!
Don’t Forget…
Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!
Learn to Age Gracefully
Join the 98k+ American women taking control of their health & aging with our 100% free (and fun!) daily emails: