Early Bird Or Night Owl? Genes vs Environment

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A Sliding Slope?

In Tuesday’s newsletter, we asked you how much control you believe we have over our sleep schedule, and got the above-depicted, below-described, set of responses:

  • 45% said “most people can control it; some people with sleep disorders cannot
  • 35% said “our genes predispose us to early/late, but we can slide it a bit
  • 15% said: “going against our hardwired sleep schedules is a road to ruin”
  • 5% said “anyone can adjust their sleep schedule with enough willpower”

You may be wondering: what’s with those single-digit numbers in the graph there? And the answer is: Tuesday’s email didn’t go out at the usual time due to a scheduling mistake (sorry!), which is probably what affected the number of responses (poll response levels vary, but are usually a lot higher than this).

Note: yes, this does mean most people who read our newsletter don’t vote. So, not to sound like a politician on the campaign trail, but… Your vote counts! We always love reading your comments when you add those, too—often they provide context that allow us to tailor what we focus on in our articles

However, those are the responses we got, so here we are!

What does the science say?

Anyone can adjust their sleep with enough willpower: True or False?

False, simply. It’s difficult for most people, but for many people with sleep disorders, it is outright impossible.

In a battle of narcolepsy vs willpower, for example, no amount of willpower will stop the brain from switching to sleep mode when it thinks it’s time to sleep:

❝Narcolepsy is the most common neurological cause of chronic sleepiness. The discovery about 20 years ago that narcolepsy is caused by selective loss of the neurons producing orexins sparked great advances in the field

[There is also] developing evidence that narcolepsy is an autoimmune disorder that may be caused by a T cell-mediated attack on the orexin neurons and explain how these new perspectives can inform better therapeutic approaches.❞

~ Dr. Carrie Mahoney et al. (lightly edited for brevity)

Source: The neurobiological basis of narcolepsy

For further reading, especially if this applies to you or a loved one:

Living with Narcolepsy: Current Management Strategies, Future Prospects, and Overlooked Real-Life Concerns

Our genes predispose us to early/late, but we can slide it a bit: True or False?

True! First, about our genes predisposing us:

Genome-wide association analysis of 89,283 individuals identifies genetic variants associated with self-reporting of being a morning person

…and also:

Gene distinguishes early birds from night owls and helps predict time of death

Now, as for the “can slide it a bit”, this is really just a function of the general categories of “early bird” and “night owl” spanning periods of time that allow for a few hours’ wiggle-room at either side.

However, it is recommended to make any actual changes more gradually, with the Sleep Foundation going so far as to recommend 30 minutes, or even just 15 minutes, of change per day:

Sleep Foundation | How to Fix Your Sleep Schedule

Going against our hardwired sleep schedule is a road to ruin: True or False?

False, contextually. By this we mean: our “hardwired” sleep schedule is (for most of us), genetically predisposed but not predetermined.

Also, genetic predispositions are not necessarily always good for us; one would not argue, for example, for avoiding going against a genetic predisposition to addiction.

Some genetic predispositions are just plain bad for us, and genes can be a bit of a lottery.

That said, we do recommend getting some insider knowledge (literally), by getting personal genomics tests done, if that’s a viable option for you, so you know what’s really a genetic trait (and what to do with that information) and what’s probably caused by something else (and what to do with that information):

Genetic Testing: Health Benefits & Methods

Take care!

Don’t Forget…

Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

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    Dr. Ho’s comprehensive approach tackles unintentional self-sabotage with a multi-vector method, offering more techniques and resources than most pop-psychology books. Stop sabotaging yourself and start living intentionally!

Learn to Age Gracefully

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  • For many who are suffering with prolonged grief, the holidays can be a time to reflect and find meaning in loss

    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.

    The holiday season is meant to be filled with joy, connection and celebration of rituals. Many people, however, are starkly reminded of their grief this time of year and of whom – or what – they have lost.

    The added stress of the holiday season doesn’t help. Studies show that the holidays negatively affect many people’s mental health.

    While COVID-19-related stressors may have lessened, the grief from change and loss that so many endured during the pandemic persists. This can cause difficult emotions to resurface when they are least expected.

    I am a licensed therapist and trauma-sensitive yoga instructor. For the last 12 years, I’ve helped clients and families manage grief, depression, anxiety and complex trauma. This includes many health care workers and first responders who have recounted endless stories to me about how the pandemic increased burnout and affected their mental health and quality of life.

    I developed an online program that research shows has improved their well-being. And I’ve observed firsthand how much grief and sadness can intensify during the holidays.

    Post-pandemic holidays and prolonged grief

    During the pandemic, family dynamics, close relationships and social connections were strained, mental health problems increased or worsened, and most people’s holiday traditions and routines were upended.

    Those who lost a loved one during the pandemic may not have been able to practice rituals such as holding a memorial service, further delaying the grieving process. As a result, holiday traditions may feel more painful now for some. Time off from school or work can also trigger more intense feelings of grief and contribute to feelings of loneliness, isolation or depression.

    Sometimes feelings of grief are so persistent and severe that they interfere with daily life. For the past several decades, researchers and clinicians have been grappling with how to clearly define and treat complicated grief that does not abate over time.

    In March 2022, a new entry to describe complicated grief was added to the Diagnostic and Statistical Manual of Mental Disorders, or DSM, which classifies a spectrum of mental health disorders and problems to better understand people’s symptoms and experiences in order to treat them.

    This newly defined condition is called prolonged grief disorder. About 10% of bereaved adults are at risk, and those rates appear to have increased in the aftermath of the pandemic.

    People with prolonged grief disorder experience intense emotions, longing for the deceased, or troublesome preoccupation with memories of their loved one. Some also find it difficult to reengage socially and may feel emotionally numb. They commonly avoid reminders of their loved one and may experience a loss of identity and feel bleak about their future. These symptoms persist nearly every day for at least a month. Prolonged grief disorder can be diagnosed at least one year after a significant loss for adults and at least six months after a loss for children.

    I am no stranger to complicated grief: A close friend of mine died by suicide when I was in college, and I was one of the last people he spoke to before he ended his life. This upended my sense of predictability and control in my life and left me untangling the many existential themes that suicide loss survivors often face.

    How grieving alters brain chemistry

    Research suggests that grief not only has negative consequences for a person’s physical health, but for brain chemistry too.

    The feeling of grief and intense yearning may disrupt the neural reward systems in the brain. When bereaved individuals seek connection to their lost loved one, they are craving the chemical reward they felt before their loss when they connected with that person. These reward-seeking behaviors tend to operate on a feedback loop, functioning similar to substance addiction, and could be why some people get stuck in the despair of their grief.

    One study showed an increased activation of the amygdala when showing death-related images to people who are dealing with complicated grief, compared to adults who are not grieving a loss. The amygdala, which initiates our fight or flight response for survival, is also associated with managing distress when separated from a loved one. These changes in the brain might explain the great impact prolonged grief has on someone’s life and their ability to function.

    Recognizing prolonged grief disorder

    Experts have developed scales to help measure symptoms of prolonged grief disorder. If you identify with some of these signs for at least one year, it may be time to reach out to a mental health professional.

    Grief is not linear and doesn’t follow a timeline. It is a dynamic, evolving process that is different for everyone. There is no wrong way to grieve, so be compassionate to yourself and don’t make judgments on what you should or shouldn’t be doing.

    Increasing your social supports and engaging in meaningful activities are important first steps. It is critical to address any preexisting or co-occurring mental health concerns such as anxiety, depression or post-traumatic stress.

    It can be easy to confuse grief with depression, as some symptoms do overlap, but there are critical differences.

    If you are experiencing symptoms of depression for longer than a few weeks and it is affecting your everyday life, work and relationships, it may be time to talk with your primary care doctor or therapist.

    A sixth stage of grief

    I have found that naming the stage of grief that someone is experiencing helps diminish the power it might have over them, allowing them to mourn their loss.

    For decades, most clinicians and researchers have recognized five stages of grief: denial/shock, anger, depression, bargaining and acceptance.

    But “accepting” your grief doesn’t sit well for many. That is why a sixth stage of grief, called “finding meaning,” adds another perspective. Honoring a loss by reflecting on its meaning and the weight of its impact can help people discover ways to move forward. Recognizing how one’s life and identity are different while making space for your grief during the holidays might be one way to soften the despair.

    When my friend died by suicide, I found a deeper appreciation for what he brought into my life, soaking up the moments he would have enjoyed, in honor of him. After many years, I was able to find meaning by spreading mental health awareness. I spoke as an expert presenter for suicide prevention organizations, wrote about suicide loss and became certified to teach my local community how to respond to someone experiencing signs of mental health distress or crisis through Mental Health First Aid courses. Finding meaning is different for everyone, though.

    Sometimes, adding a routine or holiday tradition can ease the pain and allow a new version of life, while still remembering your loved one. Take out that old recipe or visit your favorite restaurant you enjoyed together. You can choose to stay open to what life has to offer, while grieving and honoring your loss. This may offer new meaning to what – and who – is around you.

    If you need emotional support or are in a mental health crisis, dial 988 or chat online with a crisis counselor.The Conversation

    Mandy Doria, Assistant Professor of Psychiatry, University of Colorado Anschutz Medical Campus

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

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  • Grain Brain – by Dr. David Perlmutter

    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.

    If you’re a regular 10almonds reader, you probably know that refined flour, and processed food in general, is not great for the health. So, what does this book offer more?

    Dr. Perlmutter sets out the case against (as the subtitle suggests) wheat, carbs, and sugar. Yes, including wholegrain wheat, and including starchy vegetables such as potatoes and parsnips. Fruit does also come under scrutiny, a clear distinction is made between whole fruits and juices. In the latter case, the lack of fiber (along with the more readily absorbable liquid state) allows for those sugars to zip straight into our blood.

    The book includes lots of stats and facts, and many study citations, along with infographics and clear explanations.

    If the book has a weakness, it’s when it forgets to clarify something that was obvious to the author. For example, when he talks about our ancestors’ diets being 75% fat and 5% carbs, he neglects to mention that this is 75% by calorie count, not by mass or volume. This makes a huge difference! It’s the difference between a fat-guzzling engine, and someone who eats mostly fruit and oily nuts but also some very high-fat meat/organs.

    The book’s strengths, on the other hand, are found in its explanation, backed by good science, of what wheat, along with excessive carbohydrates (especially sugar) can do to our body, including (and most focusedly, hence the title) our brain, leading the way to not just obvious metabolic disorders like diabetes, but also inflammatory diseases like Alzheimer’s.

    Bottom line: you don’t have to completely revamp your diet if it’s working for you, but data is data, and this book has lots, making it well-worth a read.

    Click here to check out Grain Brain, and learn about how to avoid inflaming yours!

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  • This Chair Rocks: A Manifesto Against Ageism – by Ashton Applewhite

    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 easy to think of ageism as being 80% “nobody will hire me because I am three years away from standard retirement age”, but it’s a lot more pervasive than that. And some of it, perhaps the most insidious, is the ageism that we can sometimes internalize without thinking it through.

    10almonds readers love to avoid/reverse aging (and this reviewer is no different!), but it’s good once in a while to consider our priorities and motivations, for example:

    • There is merit in being able to live without disability or discomfort
    • There is harm in feeling a need to pass for younger than we are

    And yet, even things such as disabilities are, Applewhite fairly argues, not to be feared. Absolutely avoided if reasonably possible of course, yes, but if they happen they happen and it’s good that we be able to make our peace with that, because most people have at least some kind of disability before the end, and can still strive to make the most of the precious gift that is life. The goal can and should be to play the hand we’re dealt and to live as well as we can—whatever that latter means for us personally.

    Many people’s life satisfaction goes up in later years, and Applewhite hypothesizes that while some of that can be put down to circumstances (often no longer overwhelmed with work etc, often more financially stable), a lot is a matter of having come to terms with “losing” youth and no longer having that fear. Thus, a new, freer age of life begins.

    The book does cover many other areas too, more than we can list here (but for example: ranging from pro/con brain differences to sex and intimacy), and the idea that long life is a team sport, and that we should not fall into the all-American trap of putting independence on a pedestal. Reports of how aging works with close-knit communities in the supercentenarian Blue Zones can be considered to quash this quite nicely, for instance.

    The style is casual and entertaining, and yet peppered with scholarly citations, which stack up to 30 pages of references at the back.

    Bottom line: getting older is a privilege that not everyone gets to have, so who are we to squander it? This book shares a vital sense of perspective, and is a call-to-arms for us all to do better, together.

    Click here to check out This Chair Rocks, and indeed rock it!

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Related Posts

  • HRT: Bioidentical vs Animal
  • Neurologists Debunk 11 Brain Myths

    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.

    Neuroscientists Dr. Santoshi Billakota and Dr. Brad Kamitaki debunk 11 myths about the brain. How many did you know?

    From the top

    Without further ado, the myths are…

    1. “We only use 10% of our brains”: False! We use most parts of our brain at different times, depending on the activity. PET/MRI scans show widespread usage.
    2. “The bigger the brain, the smarter the creature”: False! While there’s often a correlation, intelligence depends on brain complexity and development of specific regions, not overall size. For this reason get, for example, some corvids that are more intelligent than some dogs.
    3. “IQ tests are an accurate measure of intelligence”: False! IQ tests measure limited aspects of intelligence and are influenced by external factors like test conditions and education.
    4. “Video games rot your brain”: False! Video games can improve problem-solving, strategy, and team-building skills when played in moderation.
    5. “Memory gets worse as you age”: Partly false. While episodic memory may decline, semantic and procedural memory often improve with age.
    6. “Left-brained people are logical, and right-brained people are creative”: False! Both hemispheres work together, and personality or skills are influenced by environment and experiences, not brain hemispheres.
    7. “You can’t prevent a stroke”: False! Strokes can often be prevented by managing risk factors like blood pressure, cholesterol, and lifestyle choices.
    8. “Eating fish makes you smarter”: False! Eating fish, especially those rich in omega-3s, can support brain health but won’t increase intelligence.
    9. “You can always trust your senses”: False! Senses can be deceptive and influenced by emotions, memories, or neurological conditions.
    10. “Different sexes have different brains”: False! Structurally, brains are the same regardless of chromosomal sex; differences arise from environmental (including hormonal) and experiential factors—and even there, there’s more than enough overlap that we are far from categorizable as sexually dimorphic.
    11. “If you have a seizure, you have epilepsy”: False! A seizure can occur from various causes, but epilepsy is defined by recurrent unprovoked seizures and requires specific diagnosis and treatment.

    For more on all of these, enjoy:

    Click Here If The Embedded Video Doesn’t Load Automatically!

    Want to learn more?

    You might also like to read:

    The Dopamine Myth ← a bonus 12th myth!

    Take care!

    Don’t Forget…

    Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

    Learn to Age Gracefully

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  • What Menopause Does To The Heart

    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.

    World Menopause Day: Menopause & Cardiovascular Disease Risk

    Today, the 18th of October, is World Menopause Day.

    The theme for this year is cardiovascular disease (CVD), and if your first reaction is to wonder what that has to do with the menopause, then this is the reason why it’s being featured. Much of the menopause and its effects are shrouded in mystery; not because of a lack of science (though sometimes a bit of that too), but rather, because it is popularly considered an unimportant, semi-taboo topic.

    So, let’s be the change we want to see, and try to fix that!

    What does CVD have to do with the menopause?

    To quote Dr. Anjana Nair:

    ❝The metabolic and clinical factors secondary to menopause, such as dyslipidemia, insulin resistance, fat redistribution and systemic hypertension, contribute to the accelerated risk for cardiovascular aging and disease.

    Atherosclerosis appears to be the end result of the interaction between cardiovascular risk factors and their accentuation during the perimenopausal period.

    The increased cardiovascular risk in menopause stems from the exaggerated effects of changing physiology on the cardiovascular system.❞

    Source: Cardiovascular Changes in Menopause

    See also: Menopause-associated risk of cardiovascular disease

    Can we do anything about it?

    Yes, we can! Here be science:

    This (in few words: get your hormone levels checked, and consider HRT if appropriate) is consistent with the advice from gynecologist Dr. Jen Gunter, whom we featured back in August:

    What You Should Have Been Told About The Menopause Beforehand

    What about lifestyle changes?

    We definitely can do some good things; here’s what the science has to say:

    For a full low-down on all of these:

    Revealing the evidence-based lifestyle solutions to managing your menopause symptoms

    Want to know more?

    You can get the International Menopause Society’s free downloadable booklet here:

    Menopause & Cardiovascular Disease: What Women Need To Know

    You may also like our previous main feature:

    What Does “Balance Your Hormones” Even Mean?

    Take care!

    Don’t Forget…

    Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

    Learn to Age Gracefully

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  • Cherries’ Very Healthy Wealth Of Benefits!

    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.

    Cherries’ Health Benefits Simply Pop

    First, be aware, there are different kinds:

    Sweet & Sour

    Cherries can be divided into sweet vs sour. These are mostly nutritionally similar, though sour ones do have some extra benefits.

    Sweet and sour cherries are closely related but botanically different plants; it’s not simply a matter of ripeness (or preparation).

    These can mostly be sorted into varieties of Prunus avium and Prunus cerasus, respectively:

    Cherry Antioxidants: From Farm to Table

    Sour cherry varieties include morello and montmorency, so look out for those names in particular when doing your grocery-shopping.

    You may remember that it’s a good rule of thumb that foods that are more “bitter, astringent, or pungent” will tend to have a higher polyphenol content (that’s good):

    Enjoy Bitter Foods For Your Heart & Brain

    Juiced up

    Almost certainly for reasons of budget and convenience, as much as for standardization, most studies into the benefits of cherries have been conducted using concentrated cherry juice as a supplement.

    At home, we need not worry so much about standardization, and our budget and convenience are ours to manage. To this end, as a general rule of thumb, whole fruits are pretty much always better than juice:

    Which Sugars Are Healthier, And Which Are Just The Same?

    Antioxidant & anti-inflammatory!

    Cherries are a very good source of antioxidants, and as such they also reduce inflammation, which in turn means ameliorating autoimmune diseases, from common things like arthritis…

    Efficacy of Tart Cherry Juice to Reduce Inflammation Biomarkers among Women with Inflammatory Osteoarthritis (OA)

    …to less common things like gout:

    Cherry Consumption and the Risk of Recurrent Gout Attacks

    This can also be measured by monitoring uric acid metabolites:

    Consumption of cherries lowers plasma urate in healthy women

    Anti-diabetic effect

    Most of the studies on this have been rat studies, and the human studies have been less “the effect of cherry consumption on diabetes” and more a matter of separate studies adding up to this conclusion in, the manner of “cherries have this substance, this substance has this effect, therefore cherries will have this effect”. You can see an example of this discussed over the course of 15 studies, here:

    A Review of the Health Benefits of Cherries ← skip to section 2.2.1: “Cherry Intake And Diabetes”

    In short, the jury is out on cherry juice, but eating cherries themselves (much like getting plenty of fruit in general) is considered good against diabetes.

    Good for healthy sleep

    For this one, the juice suffices (actual cherries are still recommended, but the juice gave clear significant positive results):

    Pilot Study of the Tart Cherry Juice for the Treatment of Insomnia and Investigation of Mechanisms ← this was specifically in people over the age of 50

    Importantly, it’s not that cherries have a sedative effect, but rather they support the body’s ability to produce melatonin adequately when the time comes:

    Effect of tart cherry juice (Prunus cerasus) on melatonin levels and enhanced sleep quality

    Post-exercise recovery

    Cherries are well-known for boosting post-exercise recovery, though they may actually improve performance during exercise too, if eaten beforehand/

    For example, these marathon-runners who averaged 13% compared to placebo control:

    Effects of powdered Montmorency tart cherry supplementation on acute endurance exercise performance in aerobically trained individuals

    As for its recovery benefits, we wrote about this before:

    How To Speed Up Recovery After A Workout (According To Actual Science)

    Want to get some?

    We recommend your local supermarket (or farmer’s market!), but if for any reason you prefer to take a supplement, here’s an example product on Amazon

    Enjoy!

    Don’t Forget…

    Did you arrive here from our newsletter? Don’t forget to return to the email to continue learning!

    Learn to Age Gracefully

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