How Does Alcohol Cause Blackouts?

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Sometimes people who have never experienced an alcoholic blackout wonder “is it real, or is it just a convenient excuse to avoid responsibility/embarrassment with regard to things done while drunk?”

In 1969 (so, still in the era of incredibly unethical psychological experiments that ranged from the 50s into the 70s), Dr. Donald Goodwin conducted a study in which intoxicated participants were asked to recall an object they had just seen. Most succeeded initially, but half were unable to remember the object just 30 minutes later, demonstrating alcohol-induced memory blackouts.

But, is it any different from regular forgetting? And the answer is: yes, it is indeed different.

The memories that never got stored

Ethanol, the active compound in alcohol, is lipophilic, enabling it to cross the blood-brain barrier and disrupt brain function. It impairs all kinds of things, including decision-making, impulse control, motor skills, and, notably, memory networks—which is what we’re looking at today.

Memory formation (beyond “working memory”, which is the kind that enables you to have an idea of what you were just doing, and carry out simple plans like “pick up this cup, raise it to my mouth, and take a sip”, without forgetting partway through) relies on a process called long-term potentiation (LTP), which strengthens neural connections to store information. Ethanol disrupts this process, preventing memory storage and causing blackouts.

In effect, this means you didn’t just forget a memory; you never stored it in the first place. For this reason, experiences from during an alcoholic blackout cannot be retrieved in the same ways we might retrieve other memories (e.g. in regular forgetting, it’s possible that a context clue jogs our memory and then we remember the experience—because in regular forgetting, the memory was in there; we just didn’t recall it until we were reminded).

Blackouts (in which the memory is never stored in the first place) typically occur when blood alcohol concentration (BAC) exceeds 0.16, while lower levels can result in partial memory loss (brownouts) in which some things may be recalled, but not others. Factors such as dehydration, genetics, medications, food consumption, and age influence the likelihood of complete blackouts.

While alcohol’s residual effects typically subside within a day, repeated over-drinking can cause permanent neuron damage, as well as of course plenty of damage to other organs in the body (especially the liver and gut).

For more on all of this, enjoy:

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Want to learn more?

You might also like to read:

What Happens To Your Body When You Stop Drinking Alcohol

Take care!

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  • Managing [E-word] Dysfunction Reactions

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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

    We had several requests pertaining to veganism, meatless mondays, and substitutions in recipes—so we’re going to cover those on a different day!

    As for questions we’re answering today…

    Q: Information on [e-word] dysfunction for those who have negative reactions to [the most common medications]?

    When it comes to that particular issue, one or more of these three factors are often involved:

    • Hormones
    • Circulation
    • Psychology

    The most common drugs (that we can’t name here) work on the circulation side of things—specifically, by increasing the localized blood pressure. The exact mechanism of this drug action is interesting, albeit beyond the scope of a quick answer here today. On the other hand, the way that they work can cause adverse blood-pressure-related side effects for some people; perhaps you’re one of them.

    To take matters into your own hands, so to speak, you can address each of those three things we just mentioned:

    Hormones

    Ask your doctor (or a reputable phlebotomy service) for a hormone test. If your free/serum testosterone levels are low (which becomes increasingly common in men over the age of 45), they may prescribe something—such as testosterone shots—specifically for that.

    This way, it treats the underlying cause, rather than offering a workaround like those common pills whose names we can’t mention here.

    Circulation

    Look after your heart health; eat for your heart health, and exercise regularly!

    Cold showers/baths also work wonders for vascular tone—which is precisely what you need in this matter. By rapidly changing temperatures (such as by turning off the hot water for the last couple of minutes of your shower, or by plunging into a cold bath), your blood vessels will get practice at constricting and maintaining that constriction as necessary.

    Psychology

    [E-word] dysfunction can also have a psychological basis. Unfortunately, this can also then be self-reinforcing, if recalling previous difficulties causes you to get distracted/insecure and lose the moment. One of the best things you can do to get out of this catch-22 situation is to not worry about it in the moment. Depending on what you and your partner(s) like to do in bed, there are plenty of other equally respectable options, so just switch track!

    Having a conversation about this in advance will probably be helpful, so that everyone’s on the same page of the script in that eventuality, and it becomes “no big deal”. Without that conversation, misunderstandings and insecurities could arise for your partner(s) as well as yourself (“aren’t I desirable enough?” etc).

    So, to recap, we recommend:

    • Have your hormones checked
    • Look after your circulation
    • Make the decision to have fun!

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  • Meals That Heal – by Dr. Carolyn Williams

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    Inflammation is implicated as a contributory or casual factor in almost all chronic diseases (and still exacerbates the ones in which it’s not directly implicated causally), so if there’s one area of health to focus on with one’s diet, then reducing inflammation is a top candidate.

    This book sets about doing exactly that.

    You may be wondering whether, per the book’s subtitle, they can really all be done in 30 minutes or under. The answer is: no, not unless you have a team of sous-chefs to do all the prep work for you, and line up everything mise-en-place style for when you start the clock. If you do have that team of sous-chefs working for you, then you can probably do most of them in under 30 minutes. If you don’t have that team, then budget about an hour in total, sometimes less, sometimes more, depending on the recipe.

    The recipes themselves are mostly Mediterranean-inspired, though you might want to do a few swaps where the author has oddly recommended using seed oils instead of olive oil, or plant milk in place of where she has used dairy milk in a couple of “recipes” for smoothies. You might also want to be a little more generous with the seasonings, if you’re anything like this reviewer.

    Bottom line: if you’re looking for an anti-inflammatory starter cookbook, you could do worse than this. You could probably do better, too, such as starting with The Inflammation Spectrum – by Dr. Will Cole.

    Alternatively, click here if you want to check out Meals That Heal, and dive straight in!

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  • Stop Checking Your Likes – by Susie Moore

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    You might think this one’s advice is summed up sufficiently by the title, that there’s no need for a book! But…

    There’s a lot more to this than “stop comparing the worst out-takes of your life to someone else’s highlight reel”, and there’s a lot more to this than “just unplug”.

    Instead, Susie Moore discusses the serious underlying real emotional considerations of the need for approval (and even just acceptance) by our community, as well the fear of missing out.

    It’s not just about how social media is designed to hijack various parts of our brain, or how The Alogorithm™ is out to personally drag your soul through Hell for a few more clicks; it’s also about the human element that would exist even without that. Who remembers MySpace? No algorithm in those days, but oh the drama potential for those “top 8 friends” places. And if you think that kind of problem is just for young people 20 years ago, you have mercifully missed the drama that older generations can get into on Facebook.

    Along with the litany of evil, though, Moore also gives practical advice on how to overcome those things, how to “see the world through comedy-colored glasses”, how to ask “what’s missing, really?”, and how to make your social media experience work for you, rather than it merely using you as fuel. ← link is to our own related article!

    Bottom line: if social media sucks a lot of your time, there may be more to it than just “social media sucks in general”, and there are ways to meet your emotional needs without playing by corporations’ rules to do so.

    Click here to check out Stop Checking Your Likes, and breathe easy!

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  • The Circadian Code – by Dr. Satchin Panda

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    There’s a lot more to circadian rhythm than “sleep during these hours”. And there’s a lot more to bear in mind than “don’t have blue/white light at night”.

    In fact, Dr. Satchin Panda explains, there’s a whole daily symphony of movements in our body as different biochemical processes wax and wane according to what time of day it is.

    There are several important things he wants us to know about this:

    • Our body needs to know what time it is, for those processes to work correctly
    • Because of these daily peaks and troughs of various physiological functions, we get “correct” times for things we do every day. Not just sleeping/waking, but also:
      • The best time to eat
      • The best time to exercise
      • The best time to do mental work
      • The best times to take different kinds of supplements/medications

    Dr. Panda also looks at what things empower, or disempower, our body to keep track of what time it is.

    Bottom line: if you’d like to optimize your days and your health, this book has a lot of very valuable practicable tips.

    Click here to check out The Circadian Code, and make the most of yours!

    Don’t Forget…

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  • Give Your Adrenal Glands A Chance

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    The Hats Of Wrath

    Your adrenal glands are two little hat-shaped glands that sit on top of your kidneys (like your kidneys are wearing them as hats, in fact).

    They produce adrenaline, as you might have guessed, and also cortisol and aldosterone, which you might or might not have known, as well as some miscellaneous corticosteroids that are beyond the scope of today’s article.

    Fun fact! For a long time, doctors thought adrenal glands were much larger than they usually are, because of learning anatomy from corpses that were dissected, but invariably the corpses were those of poor people, especially criminals, whose adrenal glands were almost always overworked and swollen.

    You don’t want yours to be like that.

    What goes wrong

    Assuming you don’t have a rare disorder like Addison’s disease (in which the adrenal glands don’t produce enough of the hormones they’re supposed to), your adrenal glands will usually not have trouble producing enough adrenaline et al.

    However, as we learned from the Victorian vagabonds, they can also have no problems producing too much—much like any organ that gets overworked, however, this has consequences.

    Hopefully you’re not living a life of stressful crime on the streets, but maybe you have other reasons your adrenal glands are working overtime, such as any source of chronic stress, bad sleep (can’t recharge without this downtime), overuse of stimulants (including caffeine and/or nicotine), and, counterintuitively, alcohol. All these things can tax the adrenal glands considerably.

    When this happens, in the extreme we can get Cushing’s syndrome, characterized by the symptoms: hypertension, cortisol-based fat distribution i.e. especially face and abdomen, weakness, fragile easily irritable skin, hair loss and/or hirsutism, paradoxically, and of course general fatigue.

    In the non-extreme, we get all the same symptoms just to a lower level, and experience what the medical profession is begging us not to call “Adrenal Fatigue Syndrome” because that’s not an official diagnosis, whereas if it gets a name then they’ll be expected to treat it.

    What keeps things going right

    Obviously, the opposite of the above, for a start. Which means:

    Manage chronic stress; see: How To Manage Chronic Stress

    Get good sleep; see: Why You Probably Need More Sleep

    Go easy on the caffeine; see: Caffeine Mythbusting

    Skip the nicotine; see: Nicotine Benefits (That We Don’t Recommend)!

    Avoid alcohol; see: How To Reduce Or Quit Alcohol

    There are specific vitamins and minerals that support adrenal health too; they are: vitamins B5, B6, B12, C, & D, and also magnesium and zinc.

    Good dietary sources of the above include green leafy things, cruciferous vegetables*, nuts and seeds, avocados, olive oil, and if you eat fish, then also fatty fish.

    In contrast, it is good to cut down (or avoid entirely) red meat and unfermented dairy.

    *Unsure how to get cruciferous vegetables in more often? Try today’s featured recipe, superfood broccoli pesto

    Want to know more?

    A large part of adrenal health is about keeping cortisol levels down generally (except: for most of us, we can have a little hormesis, as a treat), so for the rest of that you might like to read:

    Lower Your Cortisol! (Here’s Why & How)

    Take care!

    Don’t Forget…

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  • A Supplement To Rival St. John’s Wort Against Depression

    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.

    Do You Feel The SAMe?

    S-Adeonsyl-L-Methionone (SAMe) is a chemical found naturally in the body, and/but enjoyed widely as a supplement. The main reasons people take it are:

    • Improve mood (antidepressant effect)
    • Improve joints (reduce osteoarthritis symptoms)
    • Improve liver (detoxifying effect)

    Let’s see what the science says for each of those claims…

    Does it improve mood?

    It seems to perform comparably to St. John’s Wort (which is good; it performs comparably to Prozac).

    Best of all, it does this with fewer contraindications (St. John’s Wort has so many contraindications).

    Here’s how they stack up:

    St. John’s wort and S-Adenosyl Methionine as “natural” alternatives to conventional antidepressants in the era of the suicidality boxed warning: what is the evidence for clinically relevant benefit?

    This looks very promising, though it’d be nice to see a larger body of research, to be sure.

    Does it reduce osteoarthritis symptoms?

    The good news: it performs comparably to ibuprofen, with fewer side effects!

    The bad news: it also performs comparably to placebo!

    Read into that what you will about ibuprofen’s usefulness vs OA symptoms.

    Read all about it:

    S-Adenosylmethionine for osteoarthritis of the knee or hip

    If you were hoping for something for OA or similar symptoms, you might like our previous main features:

    Does it help against liver disease?

    According to adverts for SAMe: absolutely!

    According to science: we don’t know

    The science for this is so weak that it’d be unworthy of mention if it weren’t for the fact that SAMe is so widely sold as good against hepatotoxicity.

    To be clear: maybe it really is great! Science hasn’t yet disproved its usefulness either.

    It is popularly assumed to be beneficial due to there being an association between lower levels of SAMe in the body (remember, it is also produced inside our bodies) and development of liver disease, especially cholestasis.

    Here’s an example of what pretty much every study we found was like (inconclusive research based mostly on mice):

    S-adenosylmethionine in liver health, injury, and cancer

    For other options for liver health, consider:

    How To Unfatty A Fatty Liver

    Is it safe?

    Safety trials have been done ranging from 3 months to 2 years, with no serious side effects coming to light. So, it appears quite safe.

    That said, as with anything, there are contraindications, such as:

    • if you have bipolar disorder, skip this unless directed by your health care provider, because it may worsen the symptoms of mania
    • if you are on SSRIs or other serotonergic drugs, it may interact with those
    • if you are immunocompromised, you might want to skip it can increase the risk of P. carinii growth in such cases

    As always, do speak with your doctor/pharmacist for personalized advice.

    Summary

    SAMe’s evidence-based qualities seem to stack up as follows:

    • Against depression: good
    • Against osteoarthritis: weak
    • Against liver disease: unknown

    As for safety, it has been found quite safe for most people.

    Where can I get it?

    We don’t sell it, but here is an example product on Amazon, for your convenience

    Enjoy!

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