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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Creatine: Very Different For Young & Old People
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What’s the Deal with Creatine?
Creatine is best-known for its use as a sports supplement. It has a few other uses too, usually in the case of helping to treat (or recover from) specific medical conditions.
What actually is it?
Creatine is an organic compound formed from amino acids (mostly l-arginine and lysine, can be l-methionine, but that’s not too important for our purposes here).
We can take it as a supplement, we can get it in our diet (unless we’re vegan, because plants don’t make it; vertebrates do), and we can synthesize it in our own bodies.
What does it do?
While creatine supplements mostly take the form of creatine monohydrate, in the body it’s mostly stored in our muscle tissue as phosphocreatine, and it helps cells produce adenosine triphosphate, (ATP).
ATP is how energy is kept ready to use by cells, and is cells’ immediate go-to when they need to do something. For this reason, it’s highly instrumental in cell repair and rebuilding—which is why it’s used so much by athletes, especially bodybuilders or other athletes that have a vested interest in gaining muscle mass and enjoying faster recovery times.
See: Creatine use among young athletes
However! For reasons as yet not fully known, it doesn’t seem to have the same beneficial effect after a certain age:
What about the uses outside of sport?
Almost all studies outside of athletic performance have been on animals, despite it being suggested as potentially helpful for many things, including:
- Alzheimer’s disease
- Parkinson’s disease
- Huntington’s disease
- ischemic stroke
- epilepsy
- brain or spinal cord injuries
- motor neuron disease
- memory and brain function in older adults
However, research that’s been done on humans has been scant, if promising:
- A review of creatine supplementation in age-related diseases: more than a supplement for athletes
- Creatine supplementation and cognitive performance in elderly individuals
In short: creatine may reduce symptoms and slow the progression of some neurological diseases, although more research in humans is needed, and words such as “promising”, “potential”, etc are doing a lot of the heavy lifting in those papers we just cited.
Is it safe?
It seems so: Creatine supplementation and health variables: a retrospective study
Nor does it appear to create the sometimes-rumored kidney problems, cramps, or dehydration:
Where can I get it?
You can get it from pretty much any sports nutrition outlet, or you can order online. For example:
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Nasal Hair; How Far To Go?
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t’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
❝As a man in his sixties I find I need to trim my nasal hair quite frequently, otherwise it sticks out in an unsightly manner. But I’m never sure how severely I should cut the hairs back, or even how best to do it. Please advise.❞
As you might know, those hairs are really important for our health, so let’s start by mentioning that yes, trimming is the way, not plucking!
In an ideal world, we’d not trim them further back than the entrance to our nostrils, but given the constant nature of hair-growing, that could become a Sisyphean task.
A good compromise, if you’re not up for trimming when you get up and having visible hairs by evening, is to put the scissors away (if you haven’t already) and use a nasal hair trimmer; these are good at a) trimming nasal hairs b) abstaining from trimming them too far back.
By all means shop around, but here’s an example product on Amazon, for your convenience!
- Note 1: despite the product description, please do not stick this in your ear (or any other orifice that’s not your nose, for the love of all that is holey)
- Note 2: we chose that one for a reason; the shape of the head prevents overtrimming.
- In contrast, we do not recommend this cheaper one that has a different shape head for a closer trim, which in this case, is not what we want.
Enjoy!
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Should You Soak Your Nuts?
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
❝hi. how many almonds should one eat per day? do they need to be soaked? thank you.❞
Within reason, however many you like! Given that protein is an appetite suppressant, you’ll probably find it’s not too many.
Dr. Michael Greger, of “How Not To Die” fame, suggests aiming for 30g of nuts per day. Since almonds typically weigh about 1g each, that means 30 if it’s all almonds.
And if you’re wondering about 10 almonds? The name’s a deliberate reference to an old internet hoax about 10 almonds being the equivalent of an aspirin for treating a headache. It’s a reminder to be open-mindedly skeptical about information circulating wildly, and look into the real, evidence-based, science of things.
- Sometimes, the science validates claims, and we’re excited to share that!
- Sometimes, the science just shoots claims down, and it’s important to acknowledge when that happens too.
On which note, about soaking…
Short version: soaking can improve the absorption of some nutrients, but not much more than simply chewing thoroughly. See:
- A review of the impact of processing on nutrient bioaccessibility and digestion of almonds
- Mastication of almonds: effects of lipid bioaccessibility, appetite, and hormone response
Soaking does reduce certain “antinutrients” (compounds that block absorption of other nutrients), such as phytic acid. However, even a 24-hour soak reduces them only by about 5%:
If you don’t want to take 24-hours to get a 5% benefit, there’s good news! A 12-hour soak can result in 4% less phytic acid in chopped (but not whole) almonds:
The Effect of Soaking Almonds and Hazelnuts on Phytate and Mineral Concentrations
Lest that potentially underwhelming benefit leave a bitter taste in your mouth, one good thing about soaking almonds (if you don’t like bitter tastes, anyway) is that it will reduce their bitterness:
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Breaking Free from Emotional Eating – Geneen Roth
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The isn’t a book about restrictive dieting, or even willpower. Rather, it’s about making the unconscious conscious, and changing your relationship with food from being one of compulsion, to one of choice, wherein you also get the choice of saying “no”.
Roth takes us through the various ways in which life seems to conspire to take consciousness away from eating, from obvious distractions such as TV, to less obvious ones, like “it doesn’t count if you’re not sitting down”. She also tackles other psychological aspects, such as those people get from parents—which can be a big factor for many.
Importantly, she teaches us that when it comes to “have your cake and eat it”, you can also, in fact, have your cake and not eat it. That’s an option too. Its mere presence in our house is not the boss of us. However, overcoming the “this then that” automatic process that goes from having to eating, is something that Roth gives quite some attention to, offering a number of reframes to make it a lot easier.
The style is friendly, conversational, pop-science, and the format dates it a little—this is very much a book formatted the way pop-science books were formatted 20–50 years ago (the book itself is from 2003, for what it’s worth). However, a lack of modern format doesn’t take away from its very valuable insights, and if anything, the older format rather promotes reading a book from cover to cover, which can be beneficial.
Bottom line: if emotional or compulsive eating is something that you’ve found tricky to overcome, then this book can help make it a lot easier.
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Clean Needles Save Lives. In Some States, They Might Not Be Legal.
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Kim Botteicher hardly thinks of herself as a criminal.
On the main floor of a former Catholic church in Bolivar, Pennsylvania, Botteicher runs a flower shop and cafe.
In the former church’s basement, she also operates a nonprofit organization focused on helping people caught up in the drug epidemic get back on their feet.
The nonprofit, FAVOR ~ Western PA, sits in a rural pocket of the Allegheny Mountains east of Pittsburgh. Her organization’s home county of Westmoreland has seen roughly 100 or more drug overdose deaths each year for the past several years, the majority involving fentanyl.
Thousands more residents in the region have been touched by the scourge of addiction, which is where Botteicher comes in.
She helps people find housing, jobs, and health care, and works with families by running support groups and explaining that substance use disorder is a disease, not a moral failing.
But she has also talked publicly about how she has made sterile syringes available to people who use drugs.
“When that person comes in the door,” she said, “if they are covered with abscesses because they have been using needles that are dirty, or they’ve been sharing needles — maybe they’ve got hep C — we see that as, ‘OK, this is our first step.’”
Studies have identified public health benefits associated with syringe exchange services. The Centers for Disease Control and Prevention says these programs reduce HIV and hepatitis C infections, and that new users of the programs are more likely to enter drug treatment and more likely to stop using drugs than nonparticipants.
This harm-reduction strategy is supported by leading health groups, such as the American Medical Association, the World Health Organization, and the International AIDS Society.
But providing clean syringes could put Botteicher in legal danger. Under Pennsylvania law, it’s a misdemeanor to distribute drug paraphernalia. The state’s definition includes hypodermic syringes, needles, and other objects used for injecting banned drugs. Pennsylvania is one of 12 states that do not implicitly or explicitly authorize syringe services programs through statute or regulation, according to a 2023 analysis. A few of those states, but not Pennsylvania, either don’t have a state drug paraphernalia law or don’t include syringes in it.
Those working on the front lines of the opioid epidemic, like Botteicher, say a reexamination of Pennsylvania’s law is long overdue.
There’s an urgency to the issue as well: Billions of dollars have begun flowing into Pennsylvania and other states from legal settlements with companies over their role in the opioid epidemic, and syringe services are among the eligible interventions that could be supported by that money.
The opioid settlements reached between drug companies and distributors and a coalition of state attorneys general included a list of recommendations for spending the money. Expanding syringe services is listed as one of the core strategies.
But in Pennsylvania, where 5,158 people died from a drug overdose in 2022, the state’s drug paraphernalia law stands in the way.
Concerns over Botteicher’s work with syringe services recently led Westmoreland County officials to cancel an allocation of $150,000 in opioid settlement funds they had previously approved for her organization. County Commissioner Douglas Chew defended the decision by saying the county “is very risk averse.”
Botteicher said her organization had planned to use the money to hire additional recovery specialists, not on syringes. Supporters of syringe services point to the cancellation of funding as evidence of the need to change state law, especially given the recommendations of settlement documents.
“It’s just a huge inconsistency,” said Zoe Soslow, who leads overdose prevention work in Pennsylvania for the public health organization Vital Strategies. “It’s causing a lot of confusion.”
Though sterile syringes can be purchased from pharmacies without a prescription, handing out free ones to make drug use safer is generally considered illegal — or at least in a legal gray area — in most of the state. In Pennsylvania’s two largest cities, Philadelphia and Pittsburgh, officials have used local health powers to provide legal protection to people who operate syringe services programs.
Even so, in Philadelphia, Mayor Cherelle Parker, who took office in January, has made it clear she opposes using opioid settlement money, or any city funds, to pay for the distribution of clean needles, The Philadelphia Inquirer has reported. Parker’s position signals a major shift in that city’s approach to the opioid epidemic.
On the other side of the state, opioid settlement funds have had a big effect for Prevention Point Pittsburgh, a harm reduction organization. Allegheny County reported spending or committing $325,000 in settlement money as of the end of last year to support the organization’s work with sterile syringes and other supplies for safer drug use.
“It was absolutely incredible to not have to fundraise every single dollar for the supplies that go out,” said Prevention Point’s executive director, Aaron Arnold. “It takes a lot of energy. It pulls away from actual delivery of services when you’re constantly having to find out, ‘Do we have enough money to even purchase the supplies that we want to distribute?’”
In parts of Pennsylvania that lack these legal protections, people sometimes operate underground syringe programs.
The Pennsylvania law banning drug paraphernalia was never intended to apply to syringe services, according to Scott Burris, director of the Center for Public Health Law Research at Temple University. But there have not been court cases in Pennsylvania to clarify the issue, and the failure of the legislature to act creates a chilling effect, he said.
Carla Sofronski, executive director of the Pennsylvania Harm Reduction Network, said she was not aware of anyone having faced criminal charges for operating syringe services in the state, but she noted the threat hangs over people who do and that they are taking a “great risk.”
In 2016, the CDC flagged three Pennsylvania counties — Cambria, Crawford, and Luzerne — among 220 counties nationwide in an assessment of communities potentially vulnerable to the rapid spread of HIV and to new or continuing high rates of hepatitis C infections among people who inject drugs.
Kate Favata, a resident of Luzerne County, said she started using heroin in her late teens and wouldn’t be alive today if it weren’t for the support and community she found at a syringe services program in Philadelphia.
“It kind of just made me feel like I was in a safe space. And I don’t really know if there was like a come-to-God moment or come-to-Jesus moment,” she said. “I just wanted better.”
Favata is now in long-term recovery and works for a medication-assisted treatment program.
At clinics in Cambria and Somerset Counties, Highlands Health provides free or low-cost medical care. Despite the legal risk, the organization has operated a syringe program for several years, while also testing patients for infectious diseases, distributing overdose reversal medication, and offering recovery options.
Rosalie Danchanko, Highlands Health’s executive director, said she hopes opioid settlement money can eventually support her organization.
“Why shouldn’t that wealth be spread around for all organizations that are working with people affected by the opioid problem?” she asked.
In February, legislation to legalize syringe services in Pennsylvania was approved by a committee and has moved forward. The administration of Gov. Josh Shapiro, a Democrat, supports the legislation. But it faces an uncertain future in the full legislature, in which Democrats have a narrow majority in the House and Republicans control the Senate.
One of the bill’s lead sponsors, state Rep. Jim Struzzi, hasn’t always supported syringe services. But the Republican from western Pennsylvania said that since his brother died from a drug overdose in 2014, he has come to better understand the nature of addiction.
In the committee vote, nearly all of Struzzi’s Republican colleagues opposed the bill. State Rep. Paul Schemel said authorizing the “very instrumentality of abuse” crossed a line for him and “would be enabling an evil.”
After the vote, Struzzi said he wanted to build more bipartisan support. He noted that some of his own skepticism about the programs eased only after he visited Prevention Point Pittsburgh and saw how workers do more than just hand out syringes. These types of programs connect people to resources — overdose reversal medication, wound care, substance use treatment — that can save lives and lead to recovery.
“A lot of these people are … desperate. They’re alone. They’re afraid. And these programs bring them into someone who cares,” Struzzi said. “And that, to me, is a step in the right direction.”
At her nonprofit in western Pennsylvania, Botteicher is hoping lawmakers take action.
“If it’s something that’s going to help someone, then why is it illegal?” she said. “It just doesn’t make any sense to me.”
This story was co-reported by WESA Public Radio and Spotlight PA, an independent, nonpartisan, and nonprofit newsroom producing investigative and public-service journalism that holds power to account and drives positive change in Pennsylvania.
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.
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21% Stronger Bones in a Year at 62? Yes, It’s Possible (No Calcium Supplements Needed!)
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Bone density is a concern for a lot of people past a certain age, and it can lead to an endless juggling of vitamin and mineral supplements to try to get the right balance. Sachiaki Takamiya advocates for a natural diet- and exercise-based approach instead, showing good results with his Okinawan-influenced Blue Zones diet and lifestyle.
As a caveat, he has not gone through menopause, so this video does completely overlook the implications of that. Nevertheless, even if some of us must get our hormones from a bottle these days, this diet and exercise approach is a very good foundation and the advice here is important for all—we can take all the estrogen we need and still have weak bones if our diet and exercise aren’t there as needed.
From strength to strength
Sachiaki Takamiya’s bone density wasn’t bad the previous year, but this year it is better, hitting 123.4%. This is important information, because it’s easier to achieve an n% increase (for any given value of n) if your starting point is lower. For example, a 50% increase from 1g is 1.5g (so, 0.5g difference), whereas a 50% increase from 20g is 30g (so, a 10g difference). Since his starting value was high, this makes his 21% rise particularly noteworthy—and mean that a reader with a lower starting value will most likely see even better gains, if implementing this protocol.
You may be wondering: isn’t a bone mass density of 123.4% about 23.4% more than we want it? And the answer is that the 100% value is taken from an average peak bone mass in young adults, so having it at 100% is fine, and having it a bit higher is still better—it just means he’s outclassing healthy young adults, less likely to break a bone if he falls, etc.
As for what he ate: he focused on getting calcium and magnesium, as well as vitamins D and K2, all from food sources. Key foods included small fish (sardines, niosi, jaco), nattō, mushrooms, and seaweed (nori, wakame, hijiki). In particular, he emphasizes nattō’s benefits for bones, as well as for the gut, heart, and brain.
As for his exercise: he did weight-bearing exercise and resistance training—including calisthenics and yoga, as well as sport, and simply walking and running. His weekly routine looked like this:
- Monday: heart rate zone 2 jogging (45 min)
- Tuesday: bodyweight HIIT and flexibility (20 min)
- Wednesday: heart rate zone 2 jogging (60 min)
- Thursday: bodyweight HIIT and flexibility (40 min)
- Friday: heart rate zone 2 jogging (45 min)
- Saturday: bodyweight HIIT and flexibility (20 min)
…as well as social sports (e.g. tennis, amongst others), and additional activities such as gardening, and cycling for groceries.
For more on all of the above (this is a very information-dense video), enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- Vit D + Calcium: Too Much Of A Good Thing?
- The Bare-Bones Truth About Osteoporosis
- Which Osteoporosis Medication, If Any, Is Right For You?
- How To Do HIIT (Without Wrecking Your Body)
- The Five Pillars Of Blue Zone Longevity
Take care!
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