Fluoride Toothpaste vs Non-Fluoride Toothpaste – Which is Healthier?
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Our Verdict
When comparing fluoride toothpaste to non-fluoride toothpaste, we picked the fluoride.
Why?
Fluoride is indeed toxic; that’s why it’s in toothpaste (to kill things; namely, bacteria whose waste products would harm our teeth). However, we are much bigger than those bacteria.
Given the amount of fluoride in toothpaste (usually under 1mg per strip of toothpaste to cover a toothbrush head), the amount that people swallow unintentionally (about 1/20th of that, so about 0.1mg daily if brushing teeth twice daily), and the toxicity level of fluoride (32–64mg/kg), then even if we take the most dangerous ends of all those numbers (and an average body size), to suffer ill effects from fluoride due to brushing your teeth, would require that you brush your teeth more than 23,000 times per day.
Alternatively, if you were to ravenously eat the toothpaste instead of spitting it out, you’d only need to brush your teeth a little over 1,000 times per day.
All the same, please don’t eat toothpaste; that’s not the message here.
However! In head-to-head tests, fluoride toothpaste has almost always beaten non-fluoride toothpaste.
Almost? Yes, almost: hydroxyapatite performed equally in one study, but that’s not usually an option on as many supermarket shelves.
We found some on Amazon, though, which is the one we used for today’s head-to-head. Here it is:
However, before you rush to buy it, do be aware that the toxicity of hydroxyapatite appears to be about twice that of fluoride:
Scientific Committee on Consumer Safety Opinion On Hydroxyapatite (Nano)
…which is still very safe (you’d need to brush your teeth, and eat all the toothpaste, about 500 times per day, to get to toxic levels, if we run with the same numbers we discussed before. Again, please do not do that, though).
But, since the science so far suggests it’s about twice as toxic as fluoride, then regardless of that still being very safe, the fluoride is obviously (by the same metric) twice as safe, hence picking the fluoride.
Want more options?
Check out our previous main feature:
Less Common Oral Hygiene Options
(the above article also links back to our discussion of different toothpastes and mouthwashes, by the way)
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Thinking of using an activity tracker to achieve your exercise goals? Here’s where it can help – and where it probably won’t
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It’s that time of year when many people are getting started on their resolutions for the year ahead. Doing more physical activity is a popular and worthwhile goal.
If you’re hoping to be more active in 2024, perhaps you’ve invested in an activity tracker, or you’re considering buying one.
But what are the benefits of activity trackers? And will a basic tracker do the trick, or do you need a fancy one with lots of features? Let’s take a look.
Why use an activity tracker?
One of the most powerful predictors for being active is whether or not you are monitoring how active you are.
Most people have a vague idea of how active they are, but this is inaccurate a lot of the time. Once people consciously start to keep track of how much activity they do, they often realise it’s less than what they thought, and this motivates them to be more active.
You can self-monitor without an activity tracker (just by writing down what you do), but this method is hard to keep up in the long run and it’s also a lot less accurate compared to devices that track your every move 24/7.
By tracking steps or “activity minutes” you can ascertain whether or not you are meeting the physical activity guidelines (150 minutes of moderate to vigorous physical activity per week).
It also allows you to track how you’re progressing with any personal activity goals, and view your progress over time. All this would be difficult without an activity tracker.
Research has shown the most popular brands of activity trackers are generally reliable when it comes to tracking basic measures such as steps and activity minutes.
But wait, there’s more
Many activity trackers on the market nowadays track a range of other measures which their manufacturers promote as important in monitoring health and fitness. But is this really the case? Let’s look at some of these.
Resting heart rate
This is your heart rate at rest, which is normally somewhere between 60 and 100 beats per minute. Your resting heart rate will gradually go down as you become fitter, especially if you’re doing a lot of high-intensity exercise. Your risk of dying of any cause (all-cause mortality) is much lower when you have a low resting heart rate.
So, it is useful to keep an eye on your resting heart rate. Activity trackers are pretty good at tracking it, but you can also easily measure your heart rate by monitoring your pulse and using a stopwatch.
Heart rate during exercise
Activity trackers will also measure your heart rate when you’re active. To improve fitness efficiently, professional athletes focus on having their heart rate in certain “zones” when they’re exercising – so knowing their heart rate during exercise is important.
But if you just want to be more active and healthier, without a specific training goal in mind, you can exercise at a level that feels good to you and not worry about your heart rate during activity. The most important thing is that you’re being active.
Also, a dedicated heart rate monitor with a strap around your chest will do a much better job at measuring your actual heart rate compared to an activity tracker worn around your wrist.
Maximal heart rate
This is the hardest your heart could beat when you’re active, not something you could sustain very long. Your maximal heart rate is not influenced by how much exercise you do, or your fitness level.
Most activity trackers don’t measure it accurately anyway, so you might as well forget about this one.
VO₂max
Your muscles need oxygen to work. The more oxygen your body can process, the harder you can work, and therefore the fitter you are.
VO₂max is the volume (V) of oxygen (O₂) we could breathe maximally (max) over a one minute interval, expressed as millilitres of oxygen per kilogram of body weight per minute (ml/kg/min). Inactive women and men would have a VO₂max lower than 30 and 40 ml/kg/min, respectively. A reasonably good VO₂max would be mid thirties and higher for women and mid forties and higher for men.
VO₂max is another measure of fitness that correlates well with all-cause mortality: the higher it is, the lower your risk of dying.
For athletes, VO₂max is usually measured in a lab on a treadmill while wearing a mask that measures oxygen consumption. Activity trackers instead look at your running speed (using a GPS chip) and your heart rate and compare these measures to values from other people.
If you can run fast with a low heart rate your tracker will assume you are relatively fit, resulting in a higher VO₂max. These estimates are not very accurate as they are based on lots of assumptions. However, the error of the measurement is reasonably consistent. This means if your VO₂max is gradually increasing, you are likely to be getting fitter.
So what’s the take-home message? Focus on how many steps you take every day or the number of activity minutes you achieve. Even a basic activity tracker will measure these factors relatively accurately. There is no real need to track other measures and pay more for an activity tracker that records them, unless you are getting really serious about exercise.
Corneel Vandelanotte, Professorial Research Fellow: Physical Activity and Health, CQUniversity Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Broccoli vs Cabbage – Which is Healthier?
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Our Verdict
When comparing broccoli to cabbage, we picked the broccoli.
Why?
Here we go once again pitting two different cultivars of the same species (Brassica oleracea) against each other, and/but once again, there is one that comes out as nutritionally best.
In terms of macros, broccoli has more protein, carbs, and fiber, while they are both low glycemic index foods. The differences are small though, so it’s fairest to call this category a tie.
When it comes to vitamins, broccoli has more of vitamins A, B1, B2, B3, B5, B6, B7, B9, C, E, K, and choline, while cabbage is not higher in any vitamins. It should be noted that cabbage is still good for these, especially vitamins C and K, but broccoli is simply better.
In the category of minerals, broccoli has more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, selenium, and zinc, while cabbage is not higher in any minerals. Again though, cabbage is still good, especially in calcium, iron, and manganese, but again, broccoli is simply better.
Of course, enjoy either or both! But if you want the nutritionally densest option, it’s broccoli.
Want to learn more?
You might like to read:
What’s Your Plant Diversity Score?
Take care!
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Seriously Useful Communication Skills!
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What Are Communication Skills, Really?
Superficially, communication is “conveying an idea to someone else”. But then again…
Superficially, painting is “covering some kind of surface in paint”, and yet, for some reason, the ceiling you painted at home is not regarded as equally “good painting skills” as Michaelangelo’s, with regard to the ceiling of the Sistine Chapel.
All kinds of “Dark Psychology” enthusiasts on YouTube, authors of “Office Machiavelli” handbooks, etc, tell us that good communication skills are really a matter of persuasive speaking (or writing). And let’s not even get started on “pick-up artist” guides. Bleugh.
Not to get too philosophical, but here at 10almonds, we think that having good communication skills means being able to communicate ideas simply and clearly, and in a way that will benefit as many people as possible.
The implications of this for education are obvious, but what of other situations?
Conflict Resolution
Whether at work or at home or amongst friends or out in public, conflict will happen at some point. Even the most well-intentioned and conscientious partners, family, friends, colleagues, will eventually tread on our toes—or we, on theirs. Often because of misunderstandings, so much precious time will be lost needlessly. It’s good for neither schedule nor soul.
So, how to fix those situations?
I’m OK; You’re OK
In the category of “bestselling books that should have been an article at most”, a top-tier candidate is Thomas Harris’s “I’m OK; You’re OK”.
The (very good) premise of this (rather padded) book is that when seeking to resolve a conflict or potential conflict, we should look for a win-win:
- I’m not OK; you’re not OK ❌
- For example: “Yes, I screwed up and did this bad thing, but you too do bad things all the time”
- I’m OK; you’re not OK ❌
- For example: “It is not I who screwed up; this is actually all your fault”
- I’m not OK; you’re OK ❌
- For example: “I screwed up and am utterly beyond redemption; you should immediately divorce/disown/dismiss/defenestrate me”
- I’m OK; you’re OK ✅
- For example: “I did do this thing which turned out to be incorrect; in my defence it was because you said xyz, but I can understand why you said that, because…” and generally finding a win-win outcome.
So far, so simple.
“I”-Messages
In a conflict, it’s easy to get caught up in “you did this, you did that”, often rushing to assumptions about intent or meaning. And, the closer we are to the person in question, the more emotionally charged, and the more likely we are to do this as a knee-jerk response.
“How could you treat me this way?!” if we are talking to our spouse in a heated moment, perhaps, or “How can you treat a customer this way?!” if it’s a worker at Home Depot.
But the reality is that almost certainly neither our spouse nor the worker wanted to upset us.
Going on the attack will merely put them on the defensive, and they may even launch their own counterattack. It’s not good for anyone.
Instead, what really happened? Express it starting with the word “I”, rather than immediately putting it on the other person. Often our emotions require a little interrogation before they’ll tell us the truth, but it may be something like:
“I expected x, so when you did/said y instead, I was confused and hurt/frustrated/angry/etc”
Bonus: if your partner also understands this kind of communication situation, so much the better! Dark psychology be damned, everything is best when everyone knows the playbook and everyone is seeking the best outcome for all sides.
The Most Powerful “I”-Message Of All
Statements that start with “I” will, unless you are rules-lawyering in bad faith, tend to be less aggressive and thus prompt less defensiveness. An important tool for the toolbox, is:
“I need…”
Softly spoken, firmly if necessary, but gentle. If you do not express your needs, how can you expect anyone to fulfil them? Be that person a partner or a retail worker or anyone else. Probably they want to end the conflict too, so throw them a life-ring and they will (if they can, and are at least halfway sensible) grab it.
- “I need an apology”
- “I need a moment to cool down”
- “I need a refund”
- “I need some reassurance about…” (and detail)
Help the other person to help you!
Everything’s best when it’s you (plural) vs the problem, rather than you (plural) vs each other.
Apology Checklist
Does anyone else remember being forced to write an insincere letter of apology as a child, and the literary disaster that probably followed? As adults, we (hopefully) apologize when and if we mean it, and we want our apology to convey that.
What follows will seem very formal, but honestly, we recommend it in personal life as much as professional. It’s a ten-step apology, and you will forget these steps, so we recommend to copy and paste them into a Notes app or something, because this is of immeasurable value.
It’s good not just for when you want to apologize, but also, for when it’s you who needs an apology and needs to feel it’s sincere. Give your partner (if applicable) a copy of the checklist too!
- Statement of apology—say “I’m sorry”
- Name the offense—say what you did wrong
- Take responsibility for the offense—understand your part in the problem
- Attempt to explain the offense (not to excuse it)—how did it happen and why
- Convey emotions; show remorse
- Address the emotions/damage to the other person—show that you understand or even ask them how it affected them
- Admit fault—understand that you got it wrong and like other human beings you make mistakes
- Promise to be better—let them realize you’re trying to change
- Tell them how you will try to do it different next time and finally
- Request acceptance of the apology
Note: just because you request acceptance of the apology doesn’t mean they must give it. Maybe they won’t, or maybe they need time first. If they’re playing from this same playbook, they might say “I need some time to process this first” or such.
Want to really superpower your relationship? Read this together with your partner:
Hold Me Tight: Seven Conversations for a Lifetime of Love, and, as a bonus:
The Hold Me Tight Workbook: A Couple’s Guide for a Lifetime of Love
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- I’m not OK; you’re not OK ❌
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Wouldn’t It Be Nice To Have Regenerative Superpowers?
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The Best-Laid Schemes of Mice and Medical Researchers…
This is Dr. Ellen Heber-Katz. She’s an internationally-renowned immunologist and regeneration biologist, but her perhaps greatest discovery was accidental.
Unlike in Robert Burns’ famous poem, this one has a happy ending!
But it did involve the best-laid schemes of mice and medical researchers, and how they did indeed “gang gagly“ (or in the English translation, “go awry”).
How it started…
Back in 1995, she was conducting autoimmune research, and doing a mouse study. Her post-doc assistant was assigned to punch holes in the ears of mice that had received an experimental treatment, to distinguish them from the control group.
However, when the mice were later checked, none of them had holes (nor even any indication there ever had been holes punched)—the experiment was ruined, though the post-doc swore she did her job correctly.
So, they had to start from scratch in the new year, but again, a second batch of mice repeated the trick. No holes, no wounds, no scarring, not disruption to their fur, no damage to the cartilage that had been punched through.
In a turn of events worthy of a superhero origin story, they discovered that their laboratory-made autoimmune disease had accidentally given the mice super-healing powers of regeneration.
In the animal kingdom, this is akin to a salamander growing a new tail, but it’s not something usually found in mammals.
Read: A New Murine Model for Mammalian Wound Repair and Regeneration
How it’s going…
Dr. Heber-Katz and colleagues took another 20 years of work to isolate hypoxia-inducible factor-1a (HIF-1a) as a critical molecule that, if blocked, would eliminate the regenerative response.
Further, a drug (which they went on to patent), 1,4-dihydrophenonthrolin-4-one-3-carboxylic acid (1,4-DPCA), chemically induced this regenerative power:
See: Drug-induced regeneration in adult mice
Another 5 years later, they found that this same drug can be used to stimulate the regrowth of bones, too:
And now…
The research is continuing. Here’s the latest, a little over a month ago:
Epithelial–mesenchymal transition: an organizing principle of mammalian regeneration
Regrowing nerves has also been added into the list of things the drug can do.
What about humans?
Superpowered mice are all very well and good, but when can we expect this in humans?
The next step is testing the drug in larger animals, which she hopes to do next year, followed eventually by studies in humans.
Read the latest:
Regrowing nerves and healing without scars? A scientist’s career-long quest comes closer to fruition
Very promising!
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Power Plates – by Gena Hamshaw
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Superfoods are all well and good, but there are only so many ways one can reasonably include watercress before it starts becoming a chore.
Happily, Gena Hamshaw is here with a hundred single-dish vegan meals, that are not only nutritionally balanced as the subtitle promises, but also, as the title suggests, are nutritional powerhouses too.
In the category of criticism, some ingredients are not so universally available as others. For example, depending on where you live, your local supermarket might not have freekeh, gochujang, or pomegranate molasses.
However, most of the recipes have ingredients that are easy enough to source in any medium-sized supermarket, and for the ones that aren’t, we do recommend ordering the ingredient online and trying something you might not otherwise have experienced—that’s an important thing in life, after all!
Bottom line: if you’d like plant-based meals that are packed full of nutrients and are delicious too, this is a top-tier recipe book.
Click here to check out Power Plates, and enjoy a wide variety of plant-based cuisine!
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What Your Eyes Say About Your Health (If You Have A Mirror, You Can Do This Now!)
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In an age when doctors are increasingly pressed to get you out of their office quickly and not take the time to do thorough tests, having a good basic knowledge of signs and symptoms of disease has become more important than ever for all of us:
The eyes have it:
Dr. Siobhan Deshauer is back, this time working with Dr. Maria Howard, a Canadian optometrist, who advised behind-the-scenes to ensure the best information about these signs and symptoms and what they tell us:
- Color blindness test: Ishihara color test identifies color blindness; in the version in the video, seeing “74” is normal, “12” indicates red-green color blindness, and no numbers suggest complete color blindness due to genetics or retinal/optic nerve issues.
- Yellow sclera (scleral icterus): yellow sclera indicates high bilirubin from excessive red blood cell breakdown, liver damage, bile duct blockage, or Gilbert syndrome.
- Blue sclera: indicates thin collagen in the sclera, which can be linked to osteogenesis imperfecta, Ehlers-Danlos syndrome, and Marfan syndrome.
- Pink eye: caused by infections, autoimmune diseases, or trauma; persistent symptoms or associated pain/vision changes need medical evaluation.
- Physiologic diplopia (double vision): normal test where fingers appear doubled when focusing on different planes; absence may indicate amblyopia.
- Pinhole test (visual acuity): looking through a small pinhole can determine if glasses are needed for clearer vision.
- Nearsighted vs farsighted: nearsightedness risks retinal tears and night vision issues, while farsightedness increases the risk of glaucoma.
- Eye color and health: brown eyes lower cancer risk but higher cataract risk; light eyes higher cancer risk but lower cataract risk; sudden changes may indicate a condition.
- Kayser-Fleischer rings: golden-brown rings around the iris suggest copper buildup from Wilson disease, treatable with chelation therapy.
- Corneal arcus: gray/white ring around the iris indicates cholesterol buildup, normal with aging but concerning in younger individuals, signaling hypercholesterolemia or artery narrowing.
- Limbal rings: dark rings around the iris are generally aesthetic and not health-related.
- Red desaturation test: a difference in red color perception between eyes may indicate optic nerve or retinal issues.
- Eye twitching: often linked to stress, sleep deprivation, or caffeine; persistent twitching or muscle involvement requires medical attention.
- Pupillary reflex: pupil constriction in light; abnormal responses suggest trauma, overdose, or poisoning.
- Cataracts: lens cloudiness due to age, UV exposure, smoking, diabetes, or prednisone; also occurs sometimes in youth due to conditions like diabetes.
- Yellow spots (pinguecula and pterygium): sun damage, wind, and dust exposure cause yellow spots; protect with sunglasses to prevent progression impacting vision.
- Dark spots in the eye: includes freckles, moles (nevi), and melanoma; changes require medical evaluation.
- Hypnotic induction profile: eye roll test assesses susceptibility to hypnosis.
- Floaters: normal clumps in the eye; sudden increases, flashes, or curtain-like effects may signal retinal detachment.
- Retinal detachment: caused by aging-related vitreous shrinkage; treated with lasers, gas bubbles, or retinal buckles.
- Macular degeneration (Amsler grid test): wavy, fuzzy lines or missing vision spots may indicate this condition.
- Giant cell arteritis: no, that’s not a typo: rather it is about blood vessel inflammation that can cause blindness; treated with prednisone, symptoms include headaches and vision changes.
- Near point of convergence: focus test to detect convergence issues common with excessive screen time.
- Blepharitis: eyelid inflammation causing itchiness, burning, or flaky skin; treated with hygiene, antibiotics, or tea tree oil.
- Proptosis (Graves’ disease): bulging eyes due to hyperthyroidism; treatable with medications, radiation, or surgery.
- Ptosis (droopy eyelids): indicates myasthenia gravis, temporarily improved with the ice pack test.
- Night vision issues: caused by retinal problems or high myopia, not typically vitamin A deficiency in developed countries.
- Dry eyes: caused by screen time, smoking, medications, or autoimmune diseases; managed with lubricating drops, reduced screen time, and adjustments.
- Watery eyes: caused by irritation or blocked tear ducts; treated with lubricating drops or surgery.
- Retinoblastoma: rare childhood cancer detectable through flash photography showing one white pupil; early detection enables treatment.
For more on all of these plus visual demonstrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like:
What Your Hands Can Tell You About Your Health
Take care!
Don’t Forget…
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