Mythbusting Cookware Materials
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In Wednesday’s newsletter, we asked you what kind of cookware you mostly use, and got the above-depicted, below-described, set of responses:
- About 45% said stainless steel
- About 21% said cast iron
- About 15% said non-stick (e.g. Teflon)
- About 9% said enamel
- About 6% said aluminum
- And 1 person selected “something else”, but then commented to the contrary, writing “I use all of the above”
So, what does the science say about these options?
Stainless steel cookware is safe: True or False?
True! Assuming good quality and normal use, anyway. There really isn’t a lot to say about this, because it’s very unexciting. So long as it is what it is labelled as: there’s nothing coating it, nothing comes out of it unless you go to extremes*, and it’s easy to clean.
*If you cook for long durations at very high temperatures, it can leach nickel and chromium into food. What this means in practical terms: if you are using stainless steel to do deep-frying, then maybe stop that, and also consider going easy on deep-frying in general anyway, because obviously deep-frying is unhealthy for other reasons.
Per normal use, however: pretty much the only way (good quality) stainless steel cookware will harm you is if you touch it while it’s hot, or if it falls off a shelf onto your head.
That said, do watch out for cheap stainless steel cookware that can contain a lot of impurities, including heavy metals. Since you probably don’t have a mass spectrometer and/or chemistry lab at home to check for those impurities, your best guard here is simply to buy from a reputable brand with credible certifications.
Ceramic cookware is safe: True or False?
True… Most of the time! Ceramic pans usually have metal parts and a ceramic cooking surface coated with a very thin layer of silicon. Those metal parts will be as safe as the metals used, so if that’s stainless steel, you’re just as safe as the above. As for the silicon, it is famously inert and body-safe (which is why it’s used in body implants).
However: ceramic cookware that doesn’t have an obvious metal part and is marketed as being pure ceramic, will generally be sealed with some kind of glaze that can leach heavy metals contaminants into the food; here’s an example:
Lead toxicity from glazed ceramic cookware
Copper cookware is safe: True or False?
False! This is one we forgot to mention in the poll, as one doesn’t see a lot of it nowadays. The copper from copper pans can leach into food. Now, of course copper is an important mineral that we must get from our diet, but the amount of copper that that can leach into food from copper pans is far too much, and can induce copper toxicity.
In addition, copper cookware has been found to be, on average, highly contaminated with lead:
Non-stick cookware contaminates the food with microplastics: True or False?
True! If we were to discuss all the common non-stick contaminants here, this email would no longer fit (there’s a size limit before it gets clipped by most email services).
Suffice it to say: the non-stick coating, polytetrafluoroethylene, is itself a PFAS, that is to say, part of the category of chemicals considered environmental pollutants, and associated with a long list of health issues in humans (wherein the level of PFAS in our bloodstream is associated with higher incidence of many illnesses):
You may have noticed, of course, that the “non-stick” coating doesn’t stick very well to the pan, either, and will tend to come off over time, even if used carefully.
Also, any kind of wet cooking (e.g. saucepans, skillets, rice cooker inserts) will leach PFAS into the food. In contrast, a non-stick baking tray lined with baking paper (thus: a barrier between the tray and your food) is really not such an issue.
We wrote about PFAS before, so if you’d like a more readable pop-science article than the scientific paper above, then check out:
PFAS Exposure & Cancer: The Numbers Are High
Aluminum cookware contaminates the food with aluminum: True or False?
True! But not usually in sufficient quantities to induce aluminum toxicity, unless you are aluminum pans Georg who eats half a gram of aluminum per day, who is a statistical outlier and should not be counted.
That’s a silly example, but an actual number; the dose required for aluminum toxicity in blood is 100mg/L, and you have about 5 liters of blood.
Unless you are on kidney dialysis (because 95% of aluminum is excreted by the kidneys, and kidney dialysis solution can itself contain aluminum), you will excrete aluminum a lot faster than you can possibly absorb it from cookware. On the other hand, you can get too much of it from it being a permitted additive in foods and medications, for example if you are taking antacids they often have a lot of aluminum oxide in them—but that is outside the scope of today’s article.
However, aluminum may not be the real problem in aluminum pans:
❝In addition, aluminum (3.2 ± 0.25 to 4.64 ± 0.20 g/kg) and copper cookware (2.90 ± 0.12 g/kg) were highly contaminated with lead.
The time and pH-dependent study revealed that leaching of metals (Al, Pb, Ni, Cr, Cd, Cu, and Fe, etc.) into food was predominantly from anodized and non-anodized aluminum cookware.
More metal leaching was observed from new aluminum cookware compared to old. Acidic food was found to cause more metals to leach during cooking.❞
~ the same paper we cited when talking about copper
Cast iron cookware contaminates the food with iron: True or False?
True, but unlike with the other metals discussed, this is purely a positive, and indeed, it’s even recommended as a good way to fortify one’s diet with iron:
The only notable counterpoint we could find for this is if you have hemochromatosis, a disorder in which the body is too good at absorbing iron and holding onto it.
Thinking of getting some new cookware?
Here are some example products of high-quality safe materials on Amazon, but of course feel free to shop around:
Stainless Steel | Ceramic* | Cast Iron
*it says “non-stick” in the description, but don’t worry, it’s ceramic, not Teflon etc, and is safe
Bonus: rice cooker with stainless steel inner pot
Take care!
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Outsmart Your Pain – by Dr. Christiane Wolf
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Dr. Wolf is a physician turned mindfulness teacher. As such, and holding an MD as well as a PhD in psychosomatic medicine, she knows her stuff.
A lot of what she teaches is mindfulness-based stress reduction (MBSR), but this book is much more specific than that. It doesn’t promise you won’t continue to experience pain—in all likelihood you will—but it does change the relationship with pain, and this greatly lessens the suffering and misery that comes with it.
For many, the most distressing thing about pain is not the sensation itself, but how crippling it can be—getting in the way of life, preventing enjoyment of other things, and making every day a constant ongoing exhausting battle… And every night, a “how much rest am I actually going to be able to get, and in what condition will I wake up, and how will I get through tomorrow?” stress-fest.
Dr. Wolf helps the reader to navigate through all these challenges and more; minimize the stress, maximize the moments of respite, and keep pain’s interference with life to a minimum. Each chapter addresses different psychological aspects of chronic pain management, and each comes with specific mindfulness meditations to explore the new ideas learned.
The style is personal and profound, while coming from a place of deep professional understanding as well as compassion.
Bottom line: if you’ve been looking for a life-ring to help you reclaim your life, this one could be it; we wholeheartedly recommend it.
Click here to check out Outsmart Your Pain, and recover the beauty and joy of life!
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Pneumonia: Prevention Is Better Than Cure
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Pneumonia: What We Can & Can’t Do About It
Pneumonia is a significant killer of persons over the age of 65, with the risk increasing with age after that, rising very sharply around the age of 85:
While pneumonia is treatable, especially in young healthy adults, the risks get more severe in the older age brackets, and it’s often the case that someone goes into hospital with one thing, then develops pneumonia, which the person was already not in good physical shape to fight, because of whatever hospitalized them in the first place:
American Lung Association | Pneumonia Treatment and Recovery
Other risk factors besides age
There are a lot of things that can increase our risk factor for pneumonia; they mainly fall into the following categories:
- Autoimmune diseases
- Other diseases of the immune system (e.g. HIV)
- Medication-mediated immunosuppression (e.g. after an organ transplant)
- Chronic lung diseases (e.g. asthma, COPD, Long Covid, emphysema, etc)
- Other serious health conditions ← we know this one’s broad, but it encompasses such things as diabetes, heart disease, and cancer
See also:
Why Chronic Obstructive Pulmonary Disease (COPD) Is More Likely Than You Think
Things we can do about it
When it comes to risks, we can’t do much about our age and some of the other above factors, but there are other things we can do to reduce our risk, including:
- Get vaccinated against pneumonia if you are over 65 and/or have one of the aforementioned risk factors. This is not perfect (it only reduces the risk for certain kinds of infection) and may not be advisable for everyone (like most vaccines, it can put the body through its paces a bit after taking it), so speak with your own doctor about this, of course.
- See also: Vaccine Mythbusting
- Avoid contagion. While pneumonia itself is not spread person-to-person, it is caused by bacteria or viruses (there are numerous kinds) that are opportunistic and often become a secondary infection when the immune system is already busy with the first one. So, if possible avoid being in confined spaces with many people, and do wash your hands regularly (as a lot of germs are transferred that way and can get into the respiratory tract because you touched your face or such).
- See also: The Truth About Handwashing
- If you have a cold, or flu, or other respiratory infection, take it seriously, rest well, drink fluids, get good immune-boosting nutrients. There’s no such thing as “just a cold”; not anymore.
- Look after your general health too—health doesn’t exist in a vacuum, and nor does disease. Every part of us affects every other part of us, so anything that can be in good order, you want to be in good order.
This last one, by the way? It’s an important reminder that while some diseases (such as some of the respiratory infections that can precede pneumonia) are seasonal, good health isn’t.
We need to take care of our health as best we can every day along the way, because we never know when something could change.
Want to do more?
Check out: Seven Things To Do For Good Lung Health!
Take care!
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Pomegranate vs Figs – Which is Healthier?
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Our Verdict
When comparing pomegranate to figs, we picked the pomegranate.
Why?
In terms of macros, pomegranate has a lot more protein* and fiber, while the fig has more carbs. Thus, a win for pomegranate.
*Why such protein in a fruit? In both cases, it’s mostly from the seeds, which in both cases, we’re eating. However, pomegranates have a much greater seed-to-mass ratio than figs, and thus, a correspondingly higher amount of protein. Also some fats from the seeds, again more than figs, but the margin of difference is smaller, and not really enough to be of relevance.
In the category of vitamins, pomegranates lead with more of vitamins B1, B5, B9, C, E, K, and choline, while figs have more of vitamins A, B3, and B6. The largest margins of difference are in vitamins B9, E, and K, so all in pomegranate’s favor.
The minerals scene is closer to even; pomegranate has more copper, phosphorus, potassium, selenium, and zinc, while figs have more calcium, iron, magnesium, and manganese. Thus, a 5:4 lead for pomegranate, and the larger margins of difference are again for pomegranate.
In short, enjoy both, but pomegranates are the more nutritionally dense. Also, don’t throw away the peel! Dry it, and turn it into a powdered supplement—see our linked article below, for why:
Want to learn more?
You might like to read:
Pomegranate’s Health Gifts Are Mostly In Its Peel
Take care!
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Are You Flourishing? (There’s a Scale)
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What does it mean, to flourish? And how can you do it more?
In 2009, psychologists Diener et al developed the “Flourishing Scale”, or as it was more prosaically called originally, “Subjective Wellness Scale”. The name was changed later, as it was noted that it went beyond what was typically considered mere “wellness”.
This scale was so useful, that colleagues scrambled to see if they could improve on it, such as with PERMA (2012), which looked at:
- Positive emotion
- Engagement
- positive Relationships
- Meaning
- Accomplishment/Achievement
While popular (despite the tenuous acronym, it is a very good list of things to foster in your life), this was studied and measured scientifically and found to not be an improvement on the Flourishing Scale / SWS, so we’re going to stick to the original version for now.
We couldn’t find an interactive online quiz for the scale though (apart from this NY Times one, which is paywalled for NYT subscribers, so enjoy if you’re a NYT subscriber!), so here’s the source material, still hosted on the website of the (now deceased, as of a couple of years ago) author:
Flourishing Scale (FS) ← it’s an eight-question, ranked choice scale
How did you score? And…
What are the keys to flourishing more?
According to Jeffrey Davis M.A., of Tracking Wonder, there are five key attributes that we must develop and/or maintain:
The ability to direct and re-direct your attention
This isn’t just a task-related thing.This is about your mind itself. For example, the ability to recognize what your emotions are telling you, thank them for the message, and then set them aside. Or the ability to cut through negative thought spirals! How often have you worried about future events that didn’t transpire, or twisted yourself in knots over a past event that you can’t change?
Action: check out our previous article “The Off-Button For Your Brain” ← this is a technique for switching off racing thoughts, and it’s really good
Want more? We also did this:
The tendency to shape your time with intention and for impact
Time is an incredibly precious asset. How you use it is a very personal choice. You don’t have to maximize productivity (though you can if you want), but for example there’s a difference between:
- Deciding to spend an hour watching a TV show you really enjoy
- Wondering what’s on TV, browsing aimlessly, watching listlessly, just a distraction
In the former case, you are enjoying your time. Literally: you are experiencing joy during your time.
In the latter case, to borrow from Jim Steinman, “you were only killing time and it’ll kill you right back”!
Action: do a time audit for a week, and see where your time really goes, rather than where you expect or hope for it to go. Use this information to plan your next week more intentionally. Repeat as and when it seems like it might be useful!
The practice of constant improvement
Fun fact: you are good enough already. And you can also improve. You don’t have to, but improving in the areas that are meaningful to you can really add up over time. This could be becoming excellent at something for which already have a passion… It could also be brushing up something that you feel might be holding you back.
Action: do a quick SWOT* self-assessment. Then plan your next step from there!
*Strengths, Weaknesses, Opportunities, Threats. What are yours?
The ability to communicate and listen to others
A lot of this is about feedback. Giving and receiving feedback are often amongst the hardest things we do in the category of communication… Especially if the feedback is negative. How to decide what to disregard as baseless criticism, and what to take on board (and try not to take it personally), or the other way around, how to present negative feedback in a way that won’t trigger defensiveness.
Action: check out our previous article “Save Time With Better Communication” for some tips that really make relationships (of any kind) so much easier.
The commitment to positive experiences
Many things in life are not fun. Often, we know in advance that they will not be fun. The key here is the ability to make the most of a bad situation, and seek out better situations by your actions. Not like a lost person in a desert seeks water, but like a chess player who employs a general strategy to make tactical advantages more likely to appear.
Action: think about something you have to do but don’t want to. How could it be made more fun? Or failing that, how could it be made at least more comfortable?
See also: Working Smarter < Working Brighter!
Want to read more?
Check out: What Is Flourishing in Positive Psychology? (+8 Tips & PDF)
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Lost Connections – by Johann Hari
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Johann Hari had a long journey through (and out of!) depression, and shares his personal findings, including his disappointment with medical options, and a focus on the external factors that lead to depression.
And that’s key to this book—while he acknowledges later in the book that there are physiological factors involved in depression, he wants to look past things we can’t change (like genes accounting for 37% of depression) or things that there may be unwanted side-effects to changing (as in the case of antidepressants, for many people), to things we genuinely can choose.
And no, it’s not a “think yourself happy” book either; rather, it looks at nine key external factorsthat a) influence depression b) can mostly be changed.
If the book has a downside, it’s that the author does tend to extrapolate his own experience a lot more than might be ideal. If SSRIs didn’t help him, they are useless, and also the only kind of antidepressant. If getting into a green space helped him, a Londoner, someone who lives in the countryside will not be depressed in the first place. And so forth. It can also be argued that he cherry-picked data to arrive at some of his pre-decided conclusions. He also misinterprets data sometimes; which is understandable; he is after all a journalist, not a scientist.
Nevertheless, he offers a fresh perspective with a lot of ideas, and whether or not we agree with them all, new ideas tend to be worth reading. And if even one of his nine ideas helps you, that’s a win.
Bottom line: if you’d like to explore the treatment of depression from a direction other than medicalization or psychotherapy, then this is will be a good book for you.
Click here to check out Lost Connections, and reforge yours!
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Get Better Sleep: Beyond The Basics
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First though, for the sake of being methodical, let’s quickly note the basics:
- Aim for 7–9 hours per night
- Set a regular bedtime and (equally important!) regular getting-up time
- Have a 2-hour wind-down period before bed, to decompress from any stresses of the day
- Minimal device/screen usage before bed
- Abstain from stimulants for as long before bed as reasonably possible (caffeine elimination halflife is 4–8 hours depending on your genes, call it 6 hours average to eliminate half (not the whole lot), and you’ll see it’s probably best to put a cap on it earlier rather than later).
- Abstain from alcohol, ideally entirely, but allow at least 1hr/unit before bed. So for example, 1hr for a 1oz single shot of spirits, or 2–3 hours for a glass of wine (depending on size), or 3–4 hours for a martini (depending on recipe). Not that that is not the elimination time, nor even the elimination halflife of alcohol, it’s just a “give your body a chance at least” calculation. If you like to have a drink to relax before bed, then well, only you can decide what you like more: that or actually getting restorative sleep.
- Consider a warm bath/shower before bed, if that suits your schedule.
- Wash and change your bedsheets more often than seems necessary. Or if that’s too onerous, at least change the pillowcases more often, which makes quite a difference already.
- Lower the temperature of your bedroom shortly before bedtime; this will help cue the body to produce melatonin
- Make your bedroom as dark as reasonably possible. Invest in blackout blinds/curtains, and remove any pesky electronics, or at least cover their little LEDs if it’s something that reasonably needs to remain on.
Ok, now, onwards…
Those 7–9 hours? Yes, it goes for you too.
A lot of people mistake getting 6 hours sleep per night for only needing 6 hours sleep per night. Sure, you may still be alive after regularly getting 6 hours, but (unless you have a rare mutation of the ADRB1 gene) it will be causing harm, and yes, that includes later in life; we don’t stop needing so much sleep, even stop getting it:
Why You Probably Need More Sleep
With this in mind, it becomes important to…
Prioritize your sleep—which means planning for it!
When does your bedtime routine start? According to sleep scientist Dr. Lisa Matricciani, it starts before breakfast. This is because the things we do earlier in the day can greatly affect the amount (and quality) of sleep we get later. For example, a morning moderate-to-intense exercise session greatly improves sleep at night:
Planning Ahead For Better Sleep
As for quality, that is as important as quantity, and it’s not just about “soundness” of sleep:
The 6 Dimensions Of Sleep (And Why They Matter)
“What gets measured, gets done” goes for sleep too
Sleep-deprived people usually underestimate how sleep-deprived they are. This is for the same reason as why drunk people usually underestimate how drunk they are—to put it in words that go for both situations: a cognitively impaired person lacks the cognitive function to realize how cognitively impaired they are.
Here’s the science on that, by the way:
How Sleep-Deprived Are You, Really?
For that reason, we recommend using sleep-tracking software (there are many apps for that) on your phone or, ideally, a wearable device (such as a smartwatch or similar).
A benefit of doing so is that we don’t think “well, I slept from 10pm to 6am, so that’s 8 hours”, if our device tells us we slept between 10:43pm and 5:56 am with 74% sleep efficiency because we woke up many times.
As an aside, sleep efficiency should be about 85%, by the way. Why not 100%, you ask? It’s because if your body is truly out like a light for the entire night, something is wrong (either you were very sleep-deprived, or you have been drugged, that kind of thing). See also:
An unbroken night’s sleep is a myth. Here’s what good sleep looks like.
So waking up during the night is normal, and nothing to worry about per se. If you do find trouble getting back to sleep, though:
How to Fall Back Asleep After Waking Up in the Middle of the Night
Be careful about how you try to supplement sleep
This goes both for taking substances of various kinds, and napping. Some sleep aids can help, but many are harmful and/or do not really work as such; here’s a rundown of examples of those:
Safe Effective Sleep Aids For Seniors?
And when it comes to napping, timing is everything:
How To Nap Like A Pro (No More “Sleep Hangovers”!)
Want to know a lot more?
This is the book on sleep:
Why We Sleep – by Dr. Matthew Walker
Enjoy!
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