New News From The Centenarian Blue Zones

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From Blue To Green…

We sometimes write about supercentenarians, which word is usually used in academia to refer to people who are not merely over 100 years of age, but over 110 years. These people can be found in many countries, but places where they have been found to be most populous (as a percentage of the local population) have earned the moniker “Blue Zones”—of which Okinawa and Sardinia are probably the most famous, but there are others too.

This is in contrast to, for example “Red Zones”, a term often used for areas where a particular disease is endemic, or areas where a disease is “merely” epidemic, but particularly rife at present.

In any case, back to the Blue Zones, where people live the longest and healthiest—because the latter part is important too! See also:

  • Lifespan: how long we live
  • Healthspan: how long we stay healthy (portmanteau of “healthy lifespan”)

Most of our readers don’t live in a Blue Zone (in fact, many live in a COVID Red Zone, a diabetes Red Zone, and a heart disease Red Zone), but that doesn’t mean we can’t all take tips from the Blue Zones and apply them, for example:

You may be wondering… How much good will this do me? And, we do have an answer for that:

When All’s Said And Done, How Likely Are You To Live To 100?

Now that we’re all caught-up…

The news from the Blues

A team of researchers did a big review of observational studies of centenarians and near-centenarians (aged 95+). Why include the near-centenarians, you ask? Well, most of the studies are also longitudinal, and if we’re doing an observational study of the impact of lifestyle factors on a 100-year-old, it’s helpful to know what they’ve been doing recently. Hence nudging the younger-end cutoff a little lower, so as to not begin each study with fresh-faced 100-year-olds whom we know nothing about.

Looking at thousands of centenarians (and near-centenarians, but also including some supercentenarians, up the age of 118), the researchers got a lot of very valuable data, far more than we have room to go into here (do check out the paper at the bottom of this article, if you have time; it’s a treasure trove of data), but one of the key summary findings was a short list of four factors they found contributed the most to extreme longevity:

  1. A diverse diet with low salt intake: in particular, a wide variety of plant diversity, including protein-rich legumes, though fish featured prominently also. On average they got 57% and 65% of their energy intake from carbohydrates, 12% to 32% from protein, and 27% to 31% from fat. As for salt, they averaged 1.6g of sodium per day, which is well within the WHO’s recommendation of averaging under 2g of sodium per day. As a matter of interest, centenarians in Okinawa itself averaged 1.1g of sodium per day.
  2. Low medication use: obviously there may be a degree of non-causal association here, i.e. the same people who just happened to be healthier and therefore lived longer, correspondingly took fewer medications—they took fewer medications because they were healthier; they weren’t necessarily healthier because they took fewer medications. That said, overmedication can be a big problem, especially in places with a profit motive like the US, and can increase the risk of harmful drug interactions, and side effects that then need more medications to treat the side effects, as well as direct iatrogenic damage (i.e. this drug treats your condition, but as the cost of harming you in some other way). Naturally, sometimes we really do need meds, but it’s a good reminder to do a meds review with one’s doctor once in a while, and see if everything’s still of benefit.
  3. Getting good sleep: not shocking, and this one’s not exactly news. But what may be shocking is that 68% of centenarians reported consistently getting enough good-quality sleep. To put that into perspective, only 35% of 10almonds readers reported regularly getting sleep in the 7–9 hours range.
  4. Rural living environment: more than 75% of the centenarians and near-centenarians lived in rural areas. This is not usually something touted as a Blue Zones thing on lists of Blue zones things, but this review strongly highlighted it as very relevant. In the category of things that are more obvious once it’s pointed out, though, this isn’t necessarily such a difference between “country folk” and “city folk”, so much as the ability to regularly be in green spaces has well-established health benefits physically, mentally, and both combined (such as: neurologically).

See: The health benefits of the great outdoors: A systematic review and meta-analysis of greenspace exposure and health outcomes

And showing that yes, even parks in cities make a significant difference:

The association of green space, tree canopy and parks with life expectancy in neighborhoods of Los Angeles

Want to know more?

You can read the study in full here:

A systematic review of diet and medication use among centenarians and near-centenarians worldwide

Take care!

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    On the topic of food, she also warns us of the dangers of ultra-processed food, harmful oils, and foods with added sugar, as these can all raise cortisol levels.

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    Any discussion of cortisol management would be incomplete without discussing the importance of good quality sleep. Dr. Pelz doesn’t mention this at all in her video, but it’s important to bear in mind too!

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  • Leek vs Scallions – Which is Healthier?

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    Our Verdict

    When comparing leek to scallions, we picked the leek.

    Why?

    In terms of macros, scallions might have a point: scallions have the lower glycemic index, thanks to leek having more carbs for the same amount of fiber. That said, leek already has a low glycemic index, so this is not a big deal.

    When it comes to vitamins, leek has more of vitamins B1, B2, B3, B5, B6, B9, E, and choline, while scallions have more of vitamins A, C, and K. Noteworthily, a cup of chopped leek already provides the daily dose of vitamins A and K, and the difference in levels of vitamin C is minimal. All in all, an easy 8:3 win for leeks here, even without taking that into account.

    In the category of minerals, leek has more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, and selenium, while scallions have a little more zinc.

    Both of these allium-family plants (i.e., related to garlic) have an abundance of polyphenols, especially kaempferol.

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    Top tips

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    • Diet: she follows a 16-hour intermittent fasting schedule (eating between 09:00–17:00), consumes a clean omnivore diet with an emphasis on vegetables and adequate protein, and avoids junk food.
    • Brain: she meditates for 20 minutes daily, prioritizes mental health, and ensures sufficient quality sleep, helped by morning sunlight exposure and time in nature.
    • Hormesis: she engages in 20-minute sauna sessions followed by cold showers four times per week to support recovery and longevity.
    • Supplements: she takes longevity supplements and bioidentical hormones to optimize her health and aging process.
    • Testing: she regularly monitors her biological age and health markers through various tests, including DEXA scans, VO2 Max tests, lipid panels, and epigenetic aging clocks, allowing her to adjust her routine accordingly.

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    Dr. Schneider also talks about improving and correcting errors of refraction—in other words, doing the job of any corrective lenses you may currently be using. While he doesn’t claim miracles, it turns out there is a lot that can be done for common issues such as near-sightedness and far-sightedness, amongst others.

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  • Neuroaffirming care values the strengths and differences of autistic people, those with ADHD or other profiles. Here’s how

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    Unsplash

    Reframing differences

    Neurodiversity challenges the traditional medical model of disability, which views neurological differences solely through a lens of deficits and disorders to be treated or cured.

    Instead, it reframes it as a different, and equally valuable, way of experiencing and navigating the world. It emphasises the need for brains that are different from what society considers “neurotypical”, based on averages and expectations. The term “neurodivergent” is applied to Autistic people, those with ADHD, dyslexia and other profiles.

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    Adaptation and strengths

    Drawing on the social model of disability, neuroaffirming care acknowledges there is often disability associated with being different, especially in a world not designed for neurodivergent people. This shift focuses away from the person having to adapt towards improving the person-environment fit.

    This can include providing accommodations and adapting environments to make them more accessible. More importantly, it promotes “thriving” through greater participation in society and meaningful activities.

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    In educational settings, this might involve using universal design for learning that benefits all learners.

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    In therapy settings, neuroaffirming care may mean a therapist grows their understanding of autistic culture and learns about how positive social identity can impact self-esteem and wellbeing.

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    In public spaces, it can look like providing a “sensory space”, such as at large concerts, where neurodivergent people can take a break and self-regulate if needed. And staff can be trained to recognise, better understand and assist with hidden disabilities.

    Combining lived experience and good practice

    Care is neuroaffirmative when it centres “lived experience” in its design and delivery, and positions people with disability as experts.

    As a result of being “different”, people in the neurodivergent community experience high rates of bullying and abuse. So neuroaffirming care should be combined with a trauma-informed approach, which acknowledges the need to understand a person’s life experiences to provide effective care.

    Culturally responsive care acknowledges limited access to support for culturally and racially marginalised Autistic people and higher rates of LGBTQIA+ identification in the neurodivergent community.

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    Authentic selves

    The draft National Autism Strategy promotes awareness that our population is neurodiverse. It hopes to foster a more inclusive and understanding society.

    It emphasises the societal and public health responsibilities for supporting neurodivergent people via public education, training, policy and legislation. By providing spaces and places where neurodivergent people can be their authentic, unmasked selves, we are laying the foundations for feeling seen, valued, safe and, ultimately, happy and thriving.

    The author would like to acknowledge the assistance of psychologist Victoria Gottliebsen in drafting this article. Victoria is a member of the Oversight Council for the National Autism Strategy.

    Josephine Barbaro, Associate Professor, Principal Research Fellow, Psychologist, La Trobe University

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

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