The Teenage Brain – by Dr. Frances Jensen

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We realize that we probably have more grandparents of teenagers than parents of teenagers here, but most of us have at least some teenage relative(s). Which makes this book interesting.

There are a lot of myths about the teenage brain, and a lot of popular assumptions that usually have some basis in fact but are often misleading.

Dr. Jensen gives us a strong foundational grounding in the neurophysiology of adolescence, from the obvious-but-often-unclear (such as the role of hormones) to less-known things like the teenage brain’s general lack of myelination. Not just “heightened neuroplasticity” but, if you imagine the brain as an electrical machine, then think of myelin as the insulation between the wires. Little wonder some wires may get crossed sometimes!

She also talks about such things as the teenage circadian rhythm’s innate differences, the impact of success and failure on the brain, and harder topics such as addiction—and the adolescent cortisol functions that can lead to teenagers needing to seek something to relax in the first place.

In criticism, we can only say that sometimes the author makes sweeping generalizations without acknowledging such, but that doesn’t detract from what she has to say on the topic of neurophysiology.

Bottom line: if there’s a teenager in your life whose behavior and/or moods are sometimes baffling to you, and whose mysteries you’d like to unravel, this is a great book.

Click here to check out the Teenage Brain, and better understand those around you!

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  • The Brain-Gut Highway: A Two-Way Street

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    The Brain-Gut Two-Way Highway

    This is Dr. Emeran Mayer. He has the rather niche dual specialty of being a gastroenterologist and a neurologist. He has published over 353 peer reviewed scientific articles, and he’s a professor in the Departments of Medicine, Physiology, and Psychiatry at UCLA. Much of his work has been pioneering medical research into gut-brain interactions.

    We know the brain and gut are connected. What else does he want us to know?

    First, that it is a two-way interaction. It’s about 90% “gut tells the brain things”, but it’s also 10% “brain tells the gut things”, and that 10% can make more like a 20% difference, if for example we look at the swing between “brain using that 10% communication to tell gut to do things worse” or “brain using that 10% communication to tell gut to do things better”, vs the midpoint null hypothesis of “what the gut would be doing with no direction from the brain”.

    For example, if we are experiencing unmanaged chronic stress, that is going to tell our gut to do things that had an evolutionary advantage 20,000–200,000 years ago. Those things will not help us now. We do not need cortisol highs and adrenal dumping because we ate a piece of bread while stressed.

    Read more (by Dr. Mayer): The Stress That Evolution Has Not Prepared Us For

    With this in mind, if we want to look after our gut, then we can start before we even put anything in our mouths. Dr. Mayer recommends managing stress, anxiety, and depression from the head downwards as well as from the gut upwards.

    Here’s what we at 10almonds have written previously on how to manage those things:

    Do eat for gut health! Yes, even if…

    Unsurprisingly, Dr. Mayer advocates for a gut-friendly, anti-inflammatory diet. We’ve written about these things before:

    …but there’s just one problem:

    For some people, such as with IBS, Crohn’s, and colitis, the Mediterranean diet that we (10almonds and Dr. Mayer) generally advocate for, is inaccessible. If you (if you have those conditions) eat as we describe, a combination of the fiber in many vegetables and the FODMAPs* in many fruits, will give you a very bad time indeed.

    *Fermentable Oligo-, Di-, Monosaccharides And Polyols

    Dr. Mayer has the answer to this riddle, and he’s not just guessing; he and his team did science to it. In a study with hundreds of participants, he measured what happened with adherence (or not) to the Mediterranean diet (or modified Mediterranean diet) (or not), in participants with IBS (or not).

    The results and conclusions from that study included:

    ❝Among IBS participants, a higher consumption of fruits, vegetables, sugar, and butter was associated with a greater severity of IBS symptoms. Multivariate analysis identified several Mediterranean Diet foods to be associated with increased IBS symptoms.

    A higher adherence to symptom-modified Mediterranean Diet was associated with a lower abundance of potentially harmful Faecalitalea, Streptococcus, and Intestinibacter, and higher abundance of potentially beneficial Holdemanella from the Firmicutes phylum.

    A standard Mediterranean Diet was not associated with IBS symptom severity, although certain Mediterranean Diet foods were associated with increased IBS symptoms. Our study suggests that standard Mediterranean Diet may not be suitable for all patients with IBS and likely needs to be personalized in those with increased symptoms.❞

    In graphical form:

    And if you’d like to read more about this (along with more details on which specific foods to include or exclude to get these results), you can do so…

    Want to know more?

    Dr. Mayer offers many resources, including a blog, books, recipes, podcasts, and even a YouTube channel:

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  • STI rates are increasing among midlife and older adults. We need to talk about it

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    Globally, the rates of common sexually transmissible infections (STIs) are increasing among people aged over 50. In some cases, rates are rising faster than among younger people.

    Recent data from the United States Centers for Disease Control and Prevention shows that, among people aged 55 and older, rates of gonorrhoea and chlamydia, two of the most common STIs, more than doubled between 2012 and 2022.

    Australian STI surveillance data has reflected similar trends. Between 2013 and 2022, there was a steady increase in diagnoses of chlamydia, gonorrhoea and syphilis among people aged 40 and older. For example, there were 5,883 notifications of chlamydia in Australians 40 plus in 2013, compared with 10,263 in 2022.

    A 2020 study of Australian women also showed that, between 2000 and 2018, there was a sharper increase in STI diagnoses among women aged 55–74 than among younger women.

    While the overall rate of common STIs is highest among young adults, the significant increase in STI diagnoses among midlife and older adults suggests we need to pay more attention to sexual health across the life course.

    Fit Ztudio/Shutterstock

    Why are STI rates rising among older adults?

    STI rates are increasing globally for all age groups, and an increase among midlife and older people is in line with this trend.

    However, increases of STIs among older people are likely due to a combination of changing sex and relationship practices and hidden sexual health needs among this group.

    The “boomer” generation came of age in the 60s and 70s. They are the generation of free love and their attitude to sex, even as they age, is quite different to that of generations before them.

    Given the median age of divorce in Australia is now over 43, and the internet has ushered in new opportunities for post-separation dating, it’s not surprising that midlife and older adults are exploring new sexual practices or finding multiple sexual partners.

    A middle-aged couple cooking.
    People may start new relationships later in life. Tint Media/Shutterstock

    It’s also possible midlife and older people have not had exposure to sexual health education in school or do not relate to current safe sex messages, which tend to be directed toward young people. Condoms may therefore seem unnecessary for people who aren’t trying to avoid pregnancy. Older people may also lack confidence negotiating safe sex or accessing STI screening.

    Hidden sexual health needs

    In contemporary life, the sex lives of older adults are largely invisible. Ageing and older bodies are often associated with loss of power and desirability, reflected in the stereotype of older people as asexual and in derogatory jokes about older people having sex.

    With some exceptions, we see few positive representations of older sexual bodies in film or television.

    Older people’s sexuality is also largely invisible in public policy. In a review of Australian policy relating to sexual and reproductive health, researchers found midlife and older adults were rarely mentioned.

    Sexual health policy generally targets groups with the highest STI rates, which excludes most older people. As midlife and older adults are beyond childbearing years, they also do not feature in reproductive health policy. This means there is a general absence of any policy related to sex or sexual health among midlife or older adults.

    Added to this, sexual health policy tends to be focused on risk rather than sexual wellbeing. Sexual wellbeing, including freedom and capacity to pursue pleasurable sexual experiences, is strongly associated with overall health and quality of life for adults of all ages. Including sexual wellbeing as a policy priority would enable a focus on safe and respectful sex and relationships across the adult life course.

    Without this priority, we have limited knowledge about what supports sexual wellbeing as people age and limited funding for initiatives to engage with midlife or older adults on these issues.

    One man, working in a home office, talking happily to another man.
    Midlife and older adults may have limited knowledge about STIs. Southworks/Shutterstock

    How can we support sexual health and wellbeing for older adults?

    Most STIs are easily treatable. Serious complications can occur, however, when STIs are undiagnosed and untreated over a long period. Untreated STIs can also be passed on to others.

    Late diagnosis is not uncommon as some STIs can have no symptoms and many people don’t routinely screen for STIs. Older, heterosexual adults are, in general, less likely than other groups to seek regular STI screening.

    For midlife or older adults, STIs may also be diagnosed late because some doctors do not initiate testing due to concerns they will cause offence or because they assume STI risk among older people is negligible.

    Many doctors are reluctant to discuss sexual health with their older patients unless the patient explicitly raises the topic. However, older people can be embarrassed or feel awkward raising matters of sex.

    Resources for health-care providers and patients to facilitate conversations about sexual health and STI screening with older patients would be a good first step.

    To address rising rates of STIs among midlife and older adults, we also need to ensure sexual health promotion is targeted toward these age groups and improve accessibility of clinical services.

    More broadly, it’s important to consider ways to ensure sexual wellbeing is prioritised in policy and practice related to midlife and older adulthood.

    A comprehensive approach to older people’s sexual health, that explicitly places value on the significance of sex and intimacy in people’s lives, will enhance our ability to more effectively respond to sexual health and STI prevention across the life course.

    Jennifer Power, Associate Professor and Principal Research Fellow, Australian Research Centre in Sex, Health and Society, La Trobe University

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

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  • Tempeh vs Tofu – Which is Healthier?

    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.

    Our Verdict

    When comparing tempeh to tofu, we picked the tempeh.

    Why?

    Per 100g, tempeh has about 1.5x as many calories, about 2x as much protein, about 3x as much fiber, and about 4x the carbohydrates.

    Which latter sounds like a lot, but really, the amounts here are small—tempeh is under 12% carbohydrates, and most of that is treated by the body as fiber (e.g. it’s a resistant starch).

    Both have no sugar, and both have more or less the same (tiny) amount of fat.

    Micronutrients, you ask? As they’re both made from soybeans, the micronutrient profiles are similar, but exact amounts will depend on the method used, so by all means check labels if comparing products in store. By and large, there’s usually not much difference, though.

    You can see sample stats here:

    Tempeh | Tofu

    In summary

    Both are great, and/but tempeh is the more nutrient-dense of the two.

    Therefore, tempeh is the healthier option, unless you are on a very strictly calorie-controlled diet, in which case, tofu will give you more quantity per calorie.

    Enjoy!

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Related Posts

  • Seven and a Half Lessons About the Brain – by Dr. Lisa Feldman Barrett
  • 10 Ways To Self-Soothe That Don’t Involve Food Or Drink

    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 one is accustomed to comfort-eating or drowning one’s sorrows, what are the alternatives that can actually work? Holistic nutritionist Selin Bilgin has a list:

    Self-Care That’s Not Self-Sabotage

    You might want to make a note of these 10 things, so they can be a sort of “menu” for you when you need them:

    • Give your introversion or extroversion what it needs (e.g. alone time to decompress, or social activities)
    • Treat your senses: often we don’t actually need food/drink so much as culinary entertainment. So, we can sate this sensory mood in other ways, for example pleasant candles, flowers, and so forth.
    • Bathe/shower nicely: it’s cliché but some personal pampering can go a long way
    • Beautify yourself: it’s also cliché, but a makeover evening has its place
    • Move! Go for a walk, do some yoga, whatever suits you, but move your body.
    • Make movie nights luxurious: instead of making it about food/drink, focus on creating an enjoyable atmosphere
    • Physically release tension: at 10almonds we recommend progressive relaxation for this!
    • Create something: whether it’s art, craft, baking, or something else, creativity feels good
    • Tackle things you’ve been procrastinating: this one doesn’t seem like self-soothing from the front end, but from the back end (i.e., having done it), it makes a big difference!
    • Journal: expressing your thoughts and feelings can help a lot—really.

    For more on each of these, enjoy:

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    Want to learn more?

    You might also like to read:

    Take care!

    Don’t Forget…

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  • Which Comes First, Cardio or Weights? – by Alex Hutchinson

    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.

    This is a book of questions and answers, myths and busts, and in short, all things exercise.

    It’s laid out as many micro-chapters with questions as headers. The explanations are clear and easy to understand, with several citations (of studies and other academic papers) per question.

    While it’s quite comprehensive (weighing in at a hefty 300+ pages), it’s not the kind of book where one could just look up any given piece of information that one wants.

    Its strength, rather, lies in pre-emptively arming the reader with knowledge, and correcting many commonly-believed myths. It can be read cover-to-cover, or just dipped into per what interests you (the table of contents lists all questions, so it’s easy to flip through).

    Bottom line: if you’ve found the world of exercise a little confusing and would like it demystifying, this book will result in a lot of “Oooooh” moments.

    Click here to check out Which Comes First, Cardio or Weights?, and know your stuff!

    PS: the short answer to the titular question is “mix it up and keep it varied”

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  • How Your Brain Chooses What To Remember

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    During the day, your brain is simply too busy to encode memories without interfering with normal processing. At night, however…

    The filing system

    The brain decides which memories to keep based on significance, using sharp brain wave ripples as an internal bookmarking system. Everyday memories fade, while important events are tagged in this manner for consolidation during sleep.

    How does it do this? It starts in the hippocampus, which records experiences during wakefulness and replays them repeatedly at high speed during sleep, preparing them for transfer to the neocortex.

    How do we know? Uniform Manifold Approximation & Projection (UMAP) for dimension reduction is a tool that condenses 400-dimensional neural activity data into 3D for visualization. Mice navigating a maze showed hippocampal activity encoding location and learning progression; it also showed neural patterns reflecting maze layout and task mastery.

    What this means in practical terms: you need to get good sleep if you don’t want to lose your memories!

    For more on all of this, enjoy:

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    How To Boost Your Memory Immediately (Without Supplements)

    Take care!

    Don’t Forget…

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