Knee Cracking & Popping: Should You Be Worried?

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Dr. Tom Walters (Doctor of Physical Therapy) explains about what’s going on behind our musical knees, and whether or not this synovial symphony is cause for concern.

When to worry (and when not to)

If the clicking/cracking/popping/etc does not come with pain, then it is probably being caused by the harmless movement of fluid within the joints, in this case specifically the patellofemoral joint, just behind the kneecap.

As Dr. Walters says:

❝It is extremely important that people understand that noises from the knee are usually not associated with pathology and may actually be a sign of a healthy, well-lubricated joint. let’s be careful not to make people feel bad about their knee noise as it can negatively influence how they view their body!❞

On the other hand, there is also such a thing as patellofemoral joint pain syndrome (PFPS), which is very common, and involves pain behind the kneecap, especially upon over-stressing the knee(s).

In such cases, it is good to get that checked out by a doctor/physiotherapist.

Dr. Walters advises us to gradually build up strength, and not try for too much too quickly. He also advises us to take care to strengthen our glutes in particular, so our knees have adequate support. Gentle stretching of the quadriceps and soft tissue mobilization with a foam roller, are also recommended, to reduce tension on the kneecap.

For more on these things and especially about the exercises, enjoy:

Click Here If The Embedded Video Doesn’t Load Automatically!

Want to learn more?

You might like to read:

How To Really Take Care Of Your Joints

Take care!

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  • Spiked Acupressure Mat: Trial & Report

    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.

    Are you ready for the least comfortable bed? The reviews are in, and…

    Let’s get straight to the point

    “Laura Try” tries out health things and reports on her findings. And in this case…

    • She noted up front that the claims for this are to improve relaxation, alleviate muscle pain, and improve sleep.
    • It also is said to help with myofascial release specifically, which can improve flexibility and mobility (as well as contributing to the alleviation of muscle pain previously mentioned)
    • She did not enjoy it at first! Shocking nobody, it was uncomfortable and even somewhat painful. However, after a while, it became less painful and more comfortable—except for trying standing on it, which still hurt (this writer has one too, and I often stand on it at my desk, whenever I feel my feet need a little excitement—it’s probably good for the circulation, but that is just a hypothesis)
    • Soon, it became relaxing. Writer’s note: that raised hemicylindrical pillow she’s using? Try putting it under your neck instead, to stimulate the vagus nerve.
    • While it is best use on bare skin, the effect can be softened by wearing a thin later of clothing between you and the mat.
    • She got hers for £71 GBP (this writer got hers for a fraction of that price from Aldi—and here’s an example product on Amazon, at a more mid-range price)

    For more details on all of the above and a blow-by-blow account, enjoy:

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  • Dietary Changes for Artery Health

    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!

    As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!

    So, no question/request too big or small

    ❝How does your diet change clean out your arteries of the bad cholesterol?❞

    There’s good news and bad news here, and they can both be delivered with a one-word reply:

    Slowly.

    Or rather: what’s being cleaned out is mostly not the LDL (bad) cholesterol, but rather, the result of that.

    When our diet is bad for cardiovascular health, our arteries get fatty deposits on their walls. Cholesterol gets stuck here too, but that’s not the main physical problem.

    Our body’s natural defenses come into action and try to clean it up, but they (for example macrophages, a kind of white blood cell that consumes invaders and then dies, before being recycled by the next part of the system) often get stuck and become part of the buildup (called atheroma), which can lead to atherosclerosis and (if calcium levels are high) hardening of the arteries, which is the worst end of this.

    This can then require medical attention, precisely because the body can’t remove it very well—especially if you are still maintaining a heart-unhealthy diet, thus continuing to add to the mess.

    However, if it is not too bad yet, yes, a dietary change alone will reverse this process. Without new material being added to the arterial walls, the body’s continual process of rejuvenation will eventually fix it, given time (free from things making it worse) and resources.

    In fact, your arteries can be one of the quickest places for your body to make something better or worse, because the blood is the means by which the body moves most things (good or bad) around the body.

    All the more reason to take extra care of it, since everything else depends on it!

    You might also like our previous main feature:

    All Things Heart Health

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  • Is still water better for you than sparkling water?

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    Still or sparkling? It’s a question you’ll commonly hear in a café or restaurant and you probably have a preference. But is there any difference for your health?

    If you love the fizz, here’s why you don’t have to pass on the sparkling water.

    Brent Hofacker/Shutterstock

    What makes my water sparkle?

    This article specifically focuses on comparing still filtered water to carbonated filtered water (called “sparkling water” or “unflavoured seltzer”). Soda water, mineral water, tonic water and flavoured water are similar, but not the same product.

    The bubbles in sparkling water are created by adding carbon dioxide to filtered water. It reacts to produce carbonic acid, which makes sparkling water more acidic (a pH of about 3.5) than still (closer to neutral, with a pH around 6.5-8.5).

    Which drink is healthiest?

    Water is the best way to hydrate our bodies. Research shows when it comes to hydration, still and sparkling water are equally effective.

    Some people believe water is healthier when it comes from a sealed bottle. But in Australia, tap water is monitored very carefully. Unlike bottled water, it also has the added benefit of fluoride, which can help protect young children against tooth decay and cavities.

    Sparkling or still water is always better than artificially sweetened flavoured drinks or juices.

    Isn’t soda water bad for my teeth and bones?

    There’s no evidence sparkling water damages your bones. While drinking a lot of soft drinks is linked to increased fractures, this is largely due to their association with higher rates of obesity.

    Sparkling water is more acidic than still water, and acidity can soften the teeth’s enamel. Usually this is not something to be too worried about, unless it is mixed with sugar or citrus, which has much higher levels of acidity and can harm teeth.

    However, if you grind your teeth often, the softening could enhance the damage it causes. If you’re undertaking a home whitening process, sparkling water might discolour your teeth.

    In most other cases, it would take a lot of sparkling water to pass by the teeth, for a long period of time, to cause any noticeable damage.

    How does drinking water affect digestion?

    There is a misconception drinking water (of any kind) with a meal is bad for digestion.

    While theoretically water could dilute stomach acid (which breaks down food), the practice of drinking it doesn’t appear to have any negative effect. Your digestive system simply adapts to the consistency of the meal.

    Some people do find that carbonated beverages cause some stomach upset. This is due to the build-up of gases, which can cause bloating, cramping and discomfort. For people with an overactive bladder, the acidity might also aggravate the urinary system.

    Interestingly, the fizzy “buzz” you feel in your mouth from sparkling water fades the more you drink it.

    Is cold water harder to digest?

    You’ve chosen still or sparkling water. What about its temperature?

    There are surprisingly few studies about the effect of drinking cold water compared to room temperature. There is some evidence colder water (at two degrees Celsius) might inhibit gastric contractions and slow down digestion. Ice water may constrict blood vessels and cause cramping.

    However other research suggests drinking cold water might temporarily boost metabolism, as the body needs to expend energy to warm it up to body temperature. This effect is minimal and unlikely to lead to significant weight loss.

    Which water wins?

    The bottom line is water is essential, hydrates us and has countless other health benefits. Water, with carbonated bubbles or without, will always be the healthiest drink to choose.

    And if you’re concerned about any impact to teeth enamel, one trick is to follow sparkling water with a glass of still. This helps rinse the teeth and return your mouth’s acidity back to normal.

    Christian Moro, Associate Professor of Science & Medicine, Bond University and Charlotte Phelps, Senior Teaching Fellow, Medical Program, Bond University

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

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    Is it diet and exercise? Well, of course that’s a component. Specific kinds of exercise, too. But, as usual when we feature a book, there’s more:

    In this case, strong throughout is the notion of life being a marathon not a sprint—and training for it accordingly.

    Doing the things now that you’ll really wish you’d started doing sooner, and finding ways to build them into daily life.

    Not just that, though! The authors take a holistic approach to life and health, and thus also cover work life, social life, and so forth. Now, you may be thinking “I’m already in the 80 and beyond category; I don’t work” and well, the authors advise that you do indeed work. You don’t have to revamp your career, but science strongly suggests that people who work longer, live longer.

    Of course that doesn’t have to mean going full-throttle like a 20-year-old determined to make their mark on the world (you can if you want, though). It could be volunteering for a charity, or otherwise just finding a socially-engaging “work-like” activity that gives you purpose.

    About the blend of motivational pep talk and science—this book is heavily weighted towards the former. It has, however, enough science to keep it on the right track throughout. Hence the two authors! Crowley for motivational pep, and Dr. Lodge for the science (with extra input from brain surgeon Dr. Hamilton, too).

    Bottom line: if you want to feel the most prepared possible for the coming years and decades, this is a great book that covers a lot of bases.

    Click here to check out “Younger Next Year” and get de-aging!

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  • What Are The “Bright Lines” Of Bright Line Eating?

    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 is Dr. Susan Thompson. She’s a cognitive neuroscientist who has turned her hand to helping people to lose weight and maintain it at a lower level, using psychology to combat overeating. She is the founder of “Bright Line Eating”.

    We’ll say up front: it’s not without some controversy, and we’ll address that as we go, but we do believe the ideas are worth examining, and then we can apply them or not as befits our personal lives.

    What does she want us to know?

    Bright Line Eating’s general goal

    Dr. Thompson’s mission statement is to help people be “happy, thin, and free”.

    You will note that this presupposes thinness as desirable, and presumes it to be healthy, which frankly, it’s not for everyone. Indeed, for people over a certain age, having a BMI that’s slightly into the “overweight” category is a protective factor against mortality (which is partly a flaw of the BMI system, but is an interesting observation nonetheless):

    When BMI Doesn’t Quite Measure Up

    Nevertheless, Dr. Thompson makes the case for the three items (happy, thin, free) coming together, which means that any miserable or unhealthy thinness is not what the approach is valuing, since it is important for “thin” to be bookended by “happy” and “free”.

    What are these “bright lines”?

    Bright Line Eating comes with 4 rules:

    1. No flour (no, not even wholegrain flour; enjoy whole grains themselves yes, but flour, no)
    2. No sugar (and as a tag-along to this, no alcohol) (sugars naturally found in whole foods, e.g. the sugar in an apple if eating an apple, is ok, but other kinds are not, e.g. foods with apple juice concentrate as a sweetener; no “natural raw cane sugar” etc is not allowed either; despite the name, it certainly doesn’t grow on the plant like that)
    3. No snacking, just three meals per day(not even eating the ingredients while cooking—which also means no taste-testing while cooking)
    4. Weigh all your food (have fun in restaurants—but more seriously, the idea here is to plan each day’s 3 meals to deliver a healthy macronutrient balance and a capped calorie total).

    You may be thinking: “that sounds dismal, and not at all bright and cheerful, and certainly not happy and free”

    The name comes from the idea that these rules are lines that one does not cross. They are “bright” lines because they should be observed with a bright and cheery demeanour, for they are the rules that, Dr. Thompson says, will make you “happy, thin, and free”.

    You will note that this is completely in opposition to the expert opinion we hosted last week:

    What Flexible Dieting Really Means

    Dr. Thompson’s position on “freedom” is that Bright Line Eating is “very structured and takes a liberating stand against moderation”

    Which may sound a bit of an oxymoron—is she really saying that we are going to be made free from freedom?

    But there is some logic to it, and it’s about the freedom from having to make many food-related decisions at times when we’re likely to make bad ones:

    Where does the psychology come in?

    Dr. Thompson’s position is that willpower is a finite, expendable resource, and therefore we should use it judiciously.

    So, much like Steve Jobs famously wore the same clothes every day because he had enough decisions to make later in the day that he didn’t want unnecessary extra decisions to make… Bright Line Eating proposes that we make certain clear decisions up front about our eating, so then we don’t have to make so many decisions (and potentially the wrong decisions) later when hungry.

    You may be wondering: ”doesn’t sticking to what we decided still require willpower?”

    And… Potentially. But the key here is shutting down self-negotiation.

    Without clear lines drawn in advance, one must decide, “shall I have this cake or not?”, perhaps reflecting on the pros and cons, the context of the situation, the kind of day we’re having, how hungry we are, what else there is available to eat, what else we have eaten already, etc etc.

    In short, there are lots of opportunities to rationalize the decision to eat the cake.

    With clear lines drawn in advance, one must decide, “shall I have this cake or not?” and the answer is “no”.

    So while sticking to that pre-decided “no” still may require some willpower, it no longer comes with a slew of tempting opportunities to rationalize a “yes”.

    Which means a much greater success rate, both in adherence and outcomes. Here’s an 8-week interventional study and 2-year follow-up:

    Bright Line Eating | Research Publications

    Counterpoint: pick your own “bright lines”

    Dr. Thompson is very keen on her 4 rules that have worked for her and many people, but she recognizes that they may not be a perfect fit for everyone.

    So, it is possible to pick and choose our own “bright lines”; it is after all a dietary approach, not a religion. Here’s her response to someone who adopted the first 3 rules, but not the 4th:

    Bright Lines as Guidelines for Weight Loss

    The most important thing for Bright Line Eating, therefore, is perhaps the action of making clear decisions in advance and sticking to them, rather than seat-of-the-pantsing our diet, and with it, our health.

    Want to know more from Dr. Thompson?

    You might like her book, which we reviewed a while ago:

    Bright Line Eating – by Dr. Susan Peirce Thompson

    Enjoy!

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  • Reading As A Cognitive Exercise

    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.

    Reading, Better

    It is relatively uncontroversial to say that reading is good for cognitive health, but we don’t like to make claims without science if we can help it, so let’s get started:

    There was a 2021 study, which found that even when controlling for many other factors, including highest level of education, socioeconomic status, and generalized pre-morbid intelligence:

    ❝high reading activity, as defined by almost daily reading, was associated with lower odds of cognitive decline, compared to low reading activity❞

    ~ Dr. Carol Chan

    Source: Can reading increase cognitive reserve?

    However, not all reading is the same. And this isn’t just about complexity or size of vocabulary, either. It’s about engagement.

    And that level of engagement remains the key factor, no matter how quickly or slowly someone reads, as the brain tends to automatically adjust reading speed per complexity, because the brain’s “processing speed” remains the same:

    Read more: Cognitive coupling during reading

    Everyone’s “processing speed” is different (and is associated with generalized intelligence and executive functions), though as a general rule of thumb, the more we practice it, the faster our processing speed gets. So if you balked at the notion of “generalized intelligence” being a factor, be reassured that this association goes both ways.

    Read more: The unique contribution of working memory, inhibition, cognitive flexibility, and intelligence to reading comprehension and reading speed

    So is the key to just read more?

    That’s a great first step! But…

    The key factor still remains: engagement.

    So what does that mean?

    It is not just the text that engages you. You must also engage the text!

    This is akin to the difference between learning to drive by watching someone else do it, and learning by getting behind the wheel and having a go.

    When it comes to reading, it should not be a purely passive thing. Sure, if you are reading a fiction book at bedtime, get lost in it, by all means. But when it comes to non-fiction reading, engage with it actively!

    For example, I (your writer here, hi), when reading non-fiction:

    • Read at what is generally considered an unusually fast pace, but
    • Write so many notes in the margins of physical books, and
    • Write so many notes using the “Notes” function on my Kindle

    And this isn’t just like a studious student taking notes. Half the time I am…

    • objecting to content (disagreeing with the author), or
    • at least questioning it, or which is especially important, or
    • noting down questions that came to my mind as a result of what I am reading.

    This latter is a bit like:

    • when you are reading 10almonds, sometimes you will follow our links and go off down a research rabbit-hole of your own, and that’s great!
    • sometimes you will disagree with something and write to tell us, and that’s great too (when this happens, one or the other or all of us will learn something, and yes, we have published corrections before now)!
    • sometimes what you read here will prompt a further question, and you’ll send that to us, and guess what, also great! We love questions.

    Now, if your enjoyment of 10almonds is entirely passive, don’t let us stop you (we know our readers like quick-and-easy knowledge, and that’s good too), it’s just, the more you actively engage with it, the more you’ll get out of it.

    This, by the way, was also a lifelong habit of Leonardo da Vinci, which you can read about here:

    How to Think Like Leonardo da Vinci: Seven Steps to Genius Every Day – by Michael J. Gelb

    a very good book that we reviewed last year

    How you read (i.e. what medium) matters too!

    Are you reading this on a desktop/laptop, or a mobile device? That difference could matter more than the difference between paper and digital, according to this study from 2020 that found…

    ❝The cumulation of evidence from this and previous studies suggests that reading on a tablet affords different interactions between the reader and the text than reading on a computer screen.

    Reading on a tablet might be more similar to reading on paper, and this may impact the attentional processes during reading❞

    ~ Dr. Ugo Ballenghein et al.

    Read more: Cognitive engagement during reading on digital tablet: Evidence from concurrent recordings of postural and eye movements

    What if my mind wanders easily?

    You can either go with it, or train to improve focus.

    Going with it: just make sure you have more engaging reading to get distracted by. It’s all good.

    Training focus: this is trickier, but worthwhile, as executive function (you will remember from earlier) was an important factor too, and training focus is training executive function.

    As for one way to do that…

    Mindfulness training improves working memory capacity and GRE performance while reducing mind wandering

    If you’d like a primer for getting going with that, then you may enjoy our previous main feature:

    No-Frills, Evidence-Based Mindfulness

    Enjoy!

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    Learn to Age Gracefully

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