Macadamias vs Hazelnuts – Which is Healthier?
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Our Verdict
When comparing macadamias to hazelnuts, we picked the hazelnuts.
Why?
In terms of macros first, hazelnuts have 2x the protein, and slightly more carbs and fiber. We call this a win for hazelnuts.
When it comes to vitamins, macadamias have more of vitamins B1, B2, and B3, while hazelnuts have more of vitamins A, B5, B6, B7, B9, C, and E. Notably, 28x more vitamin E, so that’s not inconsiderable. Also 10x the vitamin B9, and 5x the vitamin C, and the rest, more modest wins. In any case, clearly a strong win for hazelnuts here.
In the category of minerals, macadamias have more selenium, while hazelnuts have more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, and zinc. Another clear win for hazelnuts.
In short, hazelnuts win in all categories. However, by all means enjoy either or both (unless you have a nut allergy, in which case, obviously don’t).
Want to learn more?
You might like to read:
Why You Should Diversify Your Nuts
Take care!
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Sweet Potato & Black Bean Tacos
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Fiber, protein, and polyphenols! What more could one ask for? Well, great taste and warm healthy goodness, which these deliver:
You will need
For the sweet potatoes:
- 2 medium sweet potatoes, cubed (we recommend leaving the skin on, but you can peel them if you really want to)
- 1 tbsp extra virgin olive oil
- 2 tsp garlic powder
- 2 tsp smoked paprika
- 1 tsp chili powder
- 1 tsp black pepper
- 1 tsp ground cumin
- 1 tsp ground turmeric
- ½ tsp MSG or 1 tsp low-sodium salt
For the black beans:
- 2 cans black beans, drained and rinsed (or 2 cups black beans that you cooked yourself)
- ¼ bulb garlic, minced
- 1 fresh jalapeño finely chopped (or ¼ cup jalapeños from a jar, finely chopped) ← adjust quantities per your preference and per the quality of the pepper(s) you’re using; we can’t judge that from here without tasting them, so we give a good basic starting suggestion.
- 2 tsp black pepper
- 1 tsp red chili flakes
- ½ tsp MSG or 1 tsp low-sodium salt
For serving:
- 8 small corn tortillas, or your preference if substituting
- 1 avocado, pitted, peeled, cubed, and tossed in lime juice ← we’re mentioning this here because you want to do this as soon as you cut it, to avoid oxidation
- Any other salad you’d like to include; fresh parsley is also a good option when it comes to greenery, or cilantro if you don’t have the soap gene
- Tomato salsa (quantity and spice level per your preference)
Method
(we suggest you read everything at least once before doing anything)
1) Preheat the oven to 400°F / 200°C.
2) Toss the sweet potato cubes in a large bowl with the rest of the ingredients from the sweet potato section above, ensuring they are evenly coated.
3) Bake them in the oven, on a baking tray lined with baking paper, for about 30 minutes or until tender inside and crispy at the edges. Turn them over halfway through.
4) While that’s happening, mix the black beans in a bowl with the other ingredients from the black bean section above, and heat them gently. You could do this in a saucepan, but honestly, while it’s not glamorous, the microwave is actually better for this. Note: many people find the microwave cooks food unevenly, but there are two reasons for this and they’re both easily fixable:
- instead of using high power for x minutes, use medium power for 2x minutes; this will produce better results
- instead of putting the food just in a bowl, jug, or similar, use a wide bowl or similar container, and then inside that, place a small empty microwave-safe glass jar or similar upturned in the middle, and then add the food around it, so that the food is arranged in a donut shape rather than a wide cylinder shape. This means there is no “middle bit” to go underheated while the edges are heated excessively; instead, it will heat through evenly.
If you really don’t want to do that though, use a saucepan on a very low heat, add a small amount of liquid (or tomato salsa), and stir constantly.
5) Heat the tortillas in a dry skillet for about 30 seconds each on each side, when ready to serve.
6) Assemble the tacos; you can do this how you like but a good order of operations is: tortilla, leafy salad (if using), potato, beans, non-leafy salad including avocado, salsa or other topping per your preference.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- White Potato vs Sweet Potato – Which is Healthier?
- Kidney Beans or Black Beans – Which is Healthier?
- Coconut vs Avocado – Which is Healthier?
- Glutathione: More Than An Antioxidant
- Our Top 5 Spices: How Much Is Enough For Benefits? ← we hit 4/5 today!
Take care!
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What Mattress Is Best, By Science?
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The Foundations of Good Sleep
You probably know the importance of good sleep for good health. If not, here’s a quick refresher:
- Why You Probably Need More Sleep
- How Sleep-Deprived Are You, Really?
- The 6 Dimensions Of Sleep (And Why They Matter)
You should also definitely check out this quite famous book on the topic:
Why We Sleep – by Dr Matthew Walker
What helps, to get that good sleep
We’ve covered this a little before too, for example:
- Safe Effective Sleep Aids For Seniors
- Sleep Better With Better Air
- How To Nap Like A Pro (No More “Sleep Hangovers”!)
How to level-up from there
One of the biggest barriers to good sleep for many people is obstructive sleep apea:
Healthier, Natural Sleep Without Obstruction!
We covered (in the above article) a whole lot of ways of mitigating/managing obstructive sleep apnea. One of the things we mentioned as beneficial was avoiding sleeping on one’s back, and this is something Mayo Clinic’s Dr. Somers agreed with:
Back Sleeping, And Sleeping Differently After 50
“But side-sleeping is uncomfortable”
If this is you, then chances are you have the wrong mattress.
If your mattress is too firm, you can get around it by using this “five pillow” method:
Click Here If The Embedded Video Doesn’t Load Automatically
If your mattress is too soft, then sorry, you really just have to throw that thing out and start again.
The Goldilocks mattress
While different people will have different subjective preferences, the science is quite clear on what is actually best for people’s spines. As this review of 39 qualified scholarly articles concluded:
❝Results of this systematic review show that a medium-firm mattress promotes comfort, sleep quality and rachis alignment❞
~ Dr. Gianfilippo Caggiari et al.
Read in full: What type of mattress should be chosen to avoid back pain and improve sleep quality? Review of the literature
Note: to achieve “medium-firm” that remains “medium firm” has generally been assumed to require a memory-foam mattress.
How memory-foam works: memory-foam is a moderately thermosoftening material, designed to slightly soften at the touch of human body temperature, and be firmer at room temperature. This will result in it molding itself to the form of a human body, providing what amounts to personalized support for your personal shape and size, meaning your spine can stay exactly as it’s supposed to when you’re sleeping on your side, instead of (for example) your hips being wider meaning that your lumbar vertebrae are raised higher than your thoracic vertebrae, giving you the equivalent of a special nocturnal scoliosis.
It will, therefore, stop working if
- the ambient temperature is comparable to human body temperature (as happens in some places sometimes, and increasingly often these days)
- you die, and thus lose your body temperature (but in that case, your spinal alignment will be the least of your concerns)
Here’s a good explanation of the mechanics of memory foam from the Sleep Foundation:
Sleep Foundation | What is Memory Foam?
An alternative to memory foam?
If you don’t like memory foam (one criticism is that it doesn’t allow good ventilation underneath the body), there is an alterative, the grid mattress.
It’s very much “the new kid on the block” and the science is young for this, but for example this recent (April 2024) study that concluded:
❝The grid mattress is a simple, noninvasive, and nonpharmacological intervention that improved adults sleep quality and health. Controlled trials are encouraged to examine the effects of this mattress in a variety of populations and environments.❞
~ Dr. Heather Hausenblas et al.
Read in full: Effectiveness of a grid mattress on adults’ sleep quality and health: A quasi-experimental intervention study
However, that was a small (n=39) uncontrolled (i.e. there was no control group) study, and the conflict of interest statement is, well, interesting:
❝Heather A. Hausenblas, Stephanie L. Hooper, Martin Barragan, and Tarah Lynch declare no conflict of interest. Michael Breus served as a former consultant for Purple, LLC.❞
~ Ibid.
…which is a fabulous way of distracting from the mention in the “Acknowledgements” section to follow, that…
❝Purple, LLC, provided financial support for the study❞
~ Ibid.
Purple is the company that invented the mattress being tested. So while this doesn’t mean the study is necessarily dishonest and/or corrupt, it does at the very least raise a red flag for a potential instance of publication bias (because Purple may have funded multiple studies and then pulled funding of the ones that weren’t going their way).
If you are interested in Purple’s mattress and how it works, you can check it out here ← this is a link for your interest and information; not an advertisement or an endorsement. We look forward to seeing more science for this though, and echo their own call for randomized controlled trials!
Summary
Sleep is important, and while it’s a popular myth that we need less as we get older, the truth is that we merely get less on average, while still needing the same amount.
A medium-firm memory-foam mattress is a very good, well-evidenced way to support that (both figuratively and literally!).
A grid mattress is an interesting innovation, and/but we’d like to see more science for it.
Take care!
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Doctors Are as Vulnerable to Addiction as Anyone. California Grapples With a Response
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BEVERLY HILLS, Calif. — Ariella Morrow, an internal medicine doctor, gradually slid from healthy self-esteem and professional success into the depths of depression.
Beginning in 2015, she suffered a string of personal troubles, including a shattering family trauma, marital strife, and a major professional setback. At first, sheer grit and determination kept her going, but eventually she was unable to keep her troubles at bay and took refuge in heavy drinking. By late 2020, Morrow could barely get out of bed and didn’t shower or brush her teeth for weeks on end. She was up to two bottles of wine a day, alternating it with Scotch whisky.
Sitting in her well-appointed home on a recent autumn afternoon, adorned in a bright lavender dress, matching lipstick, and a large pearl necklace, Morrow traced the arc of her surrender to alcohol: “I’m not going to drink before 5 p.m. I’m not going to drink before 2. I’m not going to drink while the kids are home. And then, it was 10 o’clock, 9 o’clock, wake up and drink.”
As addiction and overdose deaths command headlines across the nation, the Medical Board of California, which licenses MDs, is developing a new program to treat and monitor doctors with alcohol and drug problems. But a fault line has appeared over whether those who join the new program without being ordered to by the board should be subject to public disclosure.
Patient advocates note that the medical board’s primary mission is “to protect healthcare consumers and prevent harm,” which they say trumps physician privacy.
The names of those required by the board to undergo treatment and monitoring under a disciplinary order are already made public. But addiction medicine professionals say that if the state wants troubled doctors to come forward without a board order, confidentiality is crucial.
Public disclosure would be “a powerful disincentive for anybody to get help” and would impede early intervention, which is key to avoiding impairment on the job that could harm patients, said Scott Hambleton, president of the Federation of State Physician Health Programs, whose core members help arrange care and monitoring of doctors for substance use disorders and mental health conditions as an alternative to discipline.
But consumer advocates argue that patients have a right to know if their doctor has an addiction. “Doctors are supposed to talk to their patients about all the risks and benefits of any treatment or procedure, yet the risk of an addicted doctor is expected to remain a secret?” Marian Hollingsworth, a volunteer advocate with the Patient Safety Action Network, told the medical board at a Nov. 14 hearing on the new program.
Doctors are as vulnerable to addiction as anyone else. People who work to help rehabilitate physicians say the rate of substance use disorders among them is at least as high as the rate for the general public, which the federal Substance Abuse and Mental Health Services Administration put at 17.3% in a Nov. 13 report.
Alcohol is a very common drug of choice among doctors, but their ready access to pain meds is also a particular risk.
“If you have an opioid use disorder and are working in an operating room with medications like fentanyl staring you down, it’s a challenge and can be a trigger,” said Chwen-Yuen Angie Chen, an addiction medicine doctor who chairs the Well-Being of Physicians and Physicians-in-Training Committee at Stanford Health Care. “It’s like someone with an alcohol use disorder working at a bar.”
From Pioneer to Lagger
California was once at the forefront of physician treatment and monitoring. In 1981, the medical board launched a program for the evaluation, treatment, and monitoring of physicians with mental illness or substance use problems. Participants were often required to take random drug tests, attend multiple group meetings a week, submit to work-site surveillance by colleagues, and stay in the program for at least five years. Doctors who voluntarily entered the program generally enjoyed confidentiality, but those ordered into it by the board as part of a disciplinary action were on the public record.
The program was terminated in 2008 after several audits found serious flaws. One such audit, conducted by Julianne D’Angelo Fellmeth, a consumer interest lawyer who was chosen as an outside monitor for the board, found that doctors in the program were often able to evade the random drug tests, attendance at mandatory group therapy sessions was not accurately tracked, and participants were not properly monitored at work sites.
Today, MDs who want help with addiction can seek private treatment on their own or in many cases are referred by hospitals and other health care employers to third parties that organize treatment and surveillance. The medical board can order a doctor on probation to get treatment.
In contrast, the California licensing boards of eight other health-related professions, including osteopathic physicians, registered nurses, dentists, and pharmacists, have treatment and monitoring programs administered under one master contract by a publicly traded company called Maximus Inc. California paid Maximus about $1.6 million last fiscal year to administer those programs.
When and if the final medical board regulations are adopted, the next step would be for the board to open bidding to find a program administrator.
Fall From Grace
Morrow’s troubles started long after the original California program had been shut down.
The daughter of a prominent cosmetic surgeon, Morrow grew up in Palm Springs in circumstances she describes as “beyond privileged.” Her father, David Morrow, later became her most trusted mentor.
But her charmed life began to fall apart in 2015, when her father and mother, Linda Morrow, were indicted on federal insurance fraud charges in a well-publicized case. In 2017, the couple fled to Israel in an attempt to escape criminal prosecution, but later they were both arrested and returned to the United States to face prison sentences.
The legal woes of Morrow’s parents, later compounded by marital problems related to the failure of her husband’s business, took a heavy toll on Morrow. She was in her early 30s when the trouble with her parents started, and she was working 16-hour days to build a private medical practice, with two small children at home. By the end of 2019, she was severely depressed and turning increasingly to alcohol. Then, the loss of her admitting privileges at a large Los Angeles hospital due to inadequate medical record-keeping shattered what remained of her self-confidence.
Morrow, reflecting on her experience, said the very strengths that propel doctors through medical school and keep them going in their careers can foster a sense of denial. “We are so strong that our strength is our greatest threat. Our power is our powerlessness,” she said. Morrow ignored all the flashing yellow lights and even the red light beyond which serious trouble lay: “I blew through all of it, and I fell off the cliff.”
By late 2020, no longer working, bedridden by depression, and drinking to excess, she realized she could no longer will her way through: “I finally said to my husband, ‘I need help.’ He said, ‘I know you do.’”
Ultimately, she packed herself off to a private residential treatment center in Texas. Now sober for 21 months, Morrow said the privacy of the addiction treatment she chose was invaluable because it shielded her from professional scrutiny.
“I didn’t have to feel naked and judged,” she said.
Morrow said her privacy concerns would make her reluctant to join a state program like the one being considered by the medical board.
Physician Privacy vs. Patient Protection
The proposed regulations would spare doctors in the program who were not under board discipline from public disclosure as long as they stayed sober and complied with all the requirements, generally including random drug tests, attendance at group sessions, and work-site monitoring. If the program put a restriction on a doctor’s medical license, it would be posted on the medical board’s website, but without mentioning the doctor’s participation in the program.
Yet even that might compromise a doctor’s career since “having a restricted license for unspecified reasons could have many enduring personal and professional implications, none positive,” said Tracy Zemansky, a clinical psychologist and president of the Southern California division of Pacific Assistance Group, which provides support and monitoring for physicians.
Zemansky and others say doctors, just like anyone else, are entitled to medical privacy under federal law, as long as they haven’t caused harm.
Many who work in addiction medicine also criticized the proposed new program for not including mental health problems, which often go hand in hand with addiction and are covered by physician health programs in other states.
“To forgo mental health treatment, I think, is a grave mistake,” Morrow said. For her, depression and alcoholism were inseparable, and the residential program she attended treated her for both.
Another point of contention is money. Under the current proposal, doctors would bear all the costs of the program.
The initial clinical evaluation, plus the regular random drug tests, group sessions, and monitoring at their work sites could cost participants over $27,000 a year on average, according to estimates posted by the medical board. And if they were required to go for 30-day inpatient treatment, that would add an additional $40,000 — plus nearly $36,000 in lost wages.
People who work in the field of addiction medicine believe that is an unfair burden. They note that most programs for physicians in other states have outside funding to reduce the cost to participants.
“The cost should not be fully borne by the doctors, because there are many other people that are benefiting from this, including the board, malpractice insurers, hospitals, the medical association,” said Greg Skipper, a semi-retired addiction medicine doctor who ran Alabama’s state physician health program for 12 years. In Alabama, he said, those institutions contribute to the program, significantly cutting the amount doctors have to pay.
The treatment program that Morrow attended in spring of 2021, at The Menninger Clinic in Houston, cost $80,000 for a six-week stay, which was covered by a concerned family member. “It saved my life,” she said.
Though Morrow had difficulty maintaining her sobriety in the first year after treatment, she has now been sober since April 2, 2022. These days, Morrow regularly attends therapy and Alcoholics Anonymous and has pivoted to become an addiction medicine doctor.
“I am a better doctor today because of my experience — no question,” Morrow said. “I am proud to be a doctor who’s an alcoholic in recovery.”
This article was produced by KFF Health News, which publishes California Healthline, an editorially independent service of the California Health Care Foundation.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.
Subscribe to KFF Health News’ free Morning Briefing.
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Could Just Two Hours Sleep Per Day Be Enough?
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Polyphasic Sleep… Super-Schedule Or An Idea Best Put To Rest?
What is it?
Let’s start by defining some terms:
- Monophasic sleep—sleeping in one “chunk” per day. For example, a good night’s “normal” sleep.
- Biphasic sleep—sleeping in two “chunks” per day. Typically, a shorter night’s sleep, with a nap usually around the middle of the day / early afternoon.
- Polyphasic sleep—sleeping in two or more “chunks per day”. Some people do this in order to have more hours awake per day, to do things. The idea is that sleeping this way is more efficient, and one can get enough rest in less time. The most popular schedules used are:
- The Überman schedule—six evenly-spaced 20-minute naps, one every four hours, throughout the 24-hour day. The name is a semi-anglicized version of the German word Übermensch, “Superman”.
- The Everyman schedule—a less extreme schedule, that has a three-hours “long sleep” during the night, and three evenly-spaced 20-minute naps during the day, for a total of 4 hours sleep.
There are other schedules, but we’ll focus on the most popular ones here.
Want to learn about the others? Visit: Polyphasic.Net (a website by and for polyphasic sleep enthusiasts)
Some people have pointed to evidence that suggests humans are naturally polyphasic sleepers, and that it is only modern lifestyles that have forced us to be (mostly) monophasic.
There is at least some evidence to suggest that when environmental light/dark conditions are changed (because of extreme seasonal variation at the poles, or, as in this case, because of artificial changes as part of a sleep science experiment), we adjust our sleeping patterns accordingly.
The counterpoint, of course, is that perhaps when at the mercy of long days/nights at the poles, or no air-conditioning to deal with the heat of the day in the tropics, that perhaps we were forced to be polyphasic, and now, with modern technology and greater control, we are free to be monophasic.
Either way, there are plenty of people who take up the practice of polyphasic sleep.
Ok, But… Why?
The main motivation for trying polyphasic sleep is simply to have more hours in the day! It’s exciting, the prospect of having 22 hours per day to be so productive and still have time over for leisure.
A secondary motivation for trying polyphasic sleep is that when the brain is sleep-deprived, it will prioritize REM sleep. Here’s where the Überman schedule becomes perhaps most interesting:
The six evenly-spaced naps of the Überman schedule are each 20 minutes long. This corresponds to the approximate length of a normal REM cycle.
Consequently, when your head hits the pillow, you’ll immediately begin dreaming, and at the end of your dream, the alarm will go off.
Waking up at the end of a dream, when one hasn’t yet entered a non-REM phase of sleep, will make you more likely to remember it. Similarly, going straight into REM sleep will make you more likely to be aware of it, thus, lucid dreaming.
Read: Sleep fragmentation and lucid dreaming (actually a very interesting and informative lucid dreaming study even if you don’t want to take up polyphasic sleep)
Six 20-minute lucid-dreaming sessions per day?! While awake for the other 22 hours?! That’s… 24 hours per day of wakefulness to use as you please! What sorcery is this?
Hence, it has quite an understandable appeal.
Next Question: Does it work?
Can we get by without the other (non-REM) kinds of sleep?
According to Überman cycle enthusiasts: Yes! The body and brain will adapt.
According to sleep scientists: No! The non-REM slow-wave phases of sleep are essential
Read: Adverse impact of polyphasic sleep patterns in humans—Report of the National Sleep Foundation sleep timing and variability consensus panel
(if you want to know just how bad it is… the top-listed “similar article” is entitled “Suicidal Ideation”)
But what about, for example, the Everman schedule? Three hours at night is enough for some non-REM sleep, right?
It is, and so it’s not as quickly deleterious to the health as the Überman schedule. But, unless you are blessed with rare genes that allow you to operate comfortably on 4 hours per day (you’ll know already if that describes you, without having to run any experiment), it’s still bad.
Adults typically need 7–9 hours of sleep per night, and if you don’t get it, you’ll accumulate a sleep debt. And, importantly:
When you accumulate sleep debt, you are borrowing time at a very high rate of interest!
And, at risk of laboring the metaphor, but this is important too:
Not only will you have to pay it back soon (with interest), you will be hounded by the debt collection agents—decreased cognitive ability and decreased physical ability—until you pay up.
In summary:
- Polyphasic sleep is really very tempting
- It will give you more hours per day (for a while)
- It will give the promised lucid dreaming benefits (which is great until you start micronapping between naps, this is effectively a mini psychotic break from reality lasting split seconds each—can be deadly if behind the wheel of a car, for instance!)
- It is unequivocally bad for the health and we do not recommend it
Bottom line:
Some of the claimed benefits are real, but are incredibly short-term, unsustainable, and come at a cost that’s far too high. We get why it’s tempting, but ultimately, it’s self-sabotage.
(Sadly! We really wanted it to work, too…)
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Inhaled Eucalyptus’s Immunomodulatory and Antimicrobial Effects
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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
❝At the first hint of a cough or a cold, I resort to steam inhalation. Some people add herbs or aromatic oils to the boiling water. What do you recommend?❞
First of all, please do be careful:
Western science’s view is predominantly “this is popular and/but evidence for its usefulness is lacking”:
But! Traditional Chinese Medicine indicates shuanghuanglian, yuxingcao and qingkailing, which the China Food and Drug Administration has also approved:
Chinese Medicine in Inhalation Therapy: A Review of Clinical Application and Formulation Development
Indian scientists are also looking at modern scientific applications of certain Ayurvedic herbs:
Promising phytochemicals of traditional Indian herbal steam inhalation therapy to combat COVID-19
In terms of what is likely more available to you, there are several reasons to choose eucalyptus over popular alternatives:
Immune-modifying and antimicrobial effects of Eucalyptus oil and simple inhalation devices
For the sake of being methodical, here’s an example product on Amazon, though we’re sure you’d have no trouble finding this in your local pharmacy if you prefer.
Take care!
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Alzheimer’s Causative Factors To Avoid
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The Best Brains Bar Nun?
This is Dr. David Snowdon. He’s an epidemiologist, and one of the world’s foremost experts on Alzheimer’s disease. He was also, most famously, the lead researcher of what has become known as “The Nun Study”.
We recently reviewed his book about this study:
…which we definitely encourage you to check out, but we’ll do our best to summarize its key points today!
Reassurance up-front: no, you don’t have to become a nun
The Nun Study
In 1991, a large number (678) of nuns were recruited for what was to be (and until now, remains) the largest study of its kind into the impact of a wide variety of factors on aging, and in particular, Alzheimer’s disease.
Why it was so important: because the nuns were all from the same Order, had the same occupation (it’s a teaching Order), with very similar lifestyles, schedules, socioeconomic status, general background, access to healthcare, similar diets, same relationship status (celibate), same sex (female), and many other factors also similar, this meant that most of the confounding variables that confound other studies were already controlled-for here.
Enrollment in the study also required consenting to donating one’s brain for study post-mortem—and of those who have since died, indeed 98% of them have been donated (the other 2%, we presume, may have run into technical administrative issues with the donation process, due to the circumstances of death and/or delays in processing the donation).
How the study was undertaken
We don’t have enough space to describe the entire methodology here, but the gist of it is:
- Genetic testing for relevant genetic factors
- Data gathered about lives so far, including not just medical records but also autobiographies that the nuns wrote when they took their vows (at ages 19–21)
- Extensive ongoing personal interviews about habits, life choices, and attitudes
- Yearly evaluations including memory tests and physical function tests
- Brain donation upon death
What they found
Technically, The Nun Study is still ongoing. Of the original 678 nuns (aged 75–106), three are still alive (based on the latest report, at least).
However, lots of results have already been gained, including…
Genes
A year into the study, in 1992, the “apolipoprotein E” (APOE) gene was established as a likely causative factor in Alzheimer’s disease. This is probably not new to our readers in 2024, but there are interesting things being learned even now, for example:
The Alzheimer’s Gene That Varies By Race & Sex
…but watch out! Because also:
Alzheimer’s Sex Differences May Not Be What They Appear
Words
Based on the autobiographies written by the nuns in their youth upon taking their vows, there were two factors that were later correlated with not getting dementia:
- Longer sentences
- Positive outlook
- “Idea density”
That latter item means the relative linguistic density of ideas and complexity thereof, and the fluency and vivacity with which they were expressed (this was not a wishy-washy assessment; there was a hard-science analysis to determine numbers).
Want to spruce up yours? You might like to check out:
Reading, Better: Reading As A Cognitive Exercise
…for specific, evidence-based ways to tweak your reading to fight cognitive decline.
Food
While the dietary habits of the nuns were fairly homogenous, those who favored eating more and cooked greens, beans, and tomatoes, lived longer and with healthier brains.
See also: Brain Food? The Eyes Have It!
Other aspects of brain health & mental health
The study also found that nuns who avoided stroke and depression, were also less likely to get dementia.
For tending to these, check out:
- Two Things You Can Do To Improve Stroke Survival Chances
- Depression, And The Mental Health First-Aid That You’ll Hopefully Never Need
- Behavioral Activation Against Depression & Anxiety
Community & Faith
Obviously, in this matter the nuns were quite a homogenous group, scoring heavily in community and faith. What’s relevant here is the difference between the nuns, and other epidemiological studies in other groups (invariably not scoring so highly).
Community & faith are considered, separately and together, to be protective factors against dementia.
Faith may be something that “you have it or you don’t” (we’re a health science newsletter, not a theological publication, but for the interested, philosopher John Stuart Mill’s 1859 essay “On Liberty“ makes a good argument for it not being something one can choose, prompting him to argue for religious tolerance, on the grounds that religious coercion is a futile effort precisely because a person cannot choose to dis/believe something)
…but community can definitely be chosen, nurtured, and grown. We’ve written about this a bit before:
You might also like to check out this great book on the topic:
Purpose: Design A Community And Change Your Life – by Gina Bianchini
Want more?
We gave a ground-up primer on avoiding Alzheimer’s and other dementias; check it out:
How To Reduce Your Alzheimer’s Risk
Take care!
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