Air Purifiers & Sleep

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It’s Q&A Day at 10almonds!

Have a question or a request? We love to hear from you!

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

❝I’ve read that air pollution has a negative effect on sleep quality and duration. Since I live next to a busy road, I was wondering whether I should invest in an air purifier. What are 10Almonds’s views?❞

Going straight to the science, there are two questions here:

  • Does air pollution negatively affect sleep quality and duration?
  • Does the use of an air purify actually improve the air quality in the way(s) necessary to make a difference?

We thought we’d have to tackle these questions separately, but we did find one study that addressed your question directly. It was a small study (n=30 if you believe the abstract; n=29 if you read the paper itself—one person dropped out); the results were modest but clear:

❝The purifier filter was associated with increased total sleep time for an average of 12 min per night, and increased total time in bed for an average of 19 min per night relative to the placebo.

There were several sleep and mood outcomes for which no changes were observed, and time awake after sleep onset was higher for the purifier filter. Air quality was better during the high-efficiency particulate air filter condition.

These findings offer positive indications that environmental interventions that improve air quality can have benefits for sleep outcomes in healthy populations who are not exhibiting clinical sleep disturbances.❞

Source: Can air purification improve sleep quality? A 2-week randomised-controlled crossover pilot study in healthy adults

In the above-linked paper’s introduction, it does establish the deleterious effect of air pollution on a wide variety of health metrics, including sleep, this latter evidenced per Caddick et al. (2018): A review of the environmental parameters necessary for an optimal sleep environment

Now, you may be wondering: is an extra 12 minutes per night worth it?

That’s your choice to make, but we would argue that it is. We can make many choices in our lives that affect our health slightly for the better or the worse. If we make a stack of choices in a particular direction, the effects will also stack, if not outright compound.

So in the case of sleep, it might be (arbitrary numbers for the sake of illustration):

  • Get good exercise earlier in the day (+3%)
  • Get good food earlier in the day (+2.5%)
  • Practice mindfulness/meditation before bed (+2.5%)
  • Have a nice dark room (+5%)
  • Have fresh bedding (+2.5%)
  • Have an air purifier running (+3%)

Now, those numbers are, as we said, arbitrary*, but remember that percentages don’t add up; they compound. So that “+3%” starts being a lot more meaningful than if it were just by itself.

*Confession: the figure of 3% for the air purifier wasn’t entirely arbitrary; it was based on 100(12/405) = 80/27 ≈ 3, wherein the 405 figure was an approximation of the average total time (in minutes) spent sleeping with placebo, based on a peep at their results graph. There are several ways the average could be reasonably calculated, but 6h45 (i.e., 405 minutes) was an approximate average of those reasonable approximate averages.

So, 12 minutes is a 3% improvement on that.

Don’t have an air purifier and want one?

We don’t sell them, but here’s an example on Amazon, for your convenience

Take care!

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  • Water Bath + More Cookbook for Beginners – by Sarah Roslin

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    Whether you want to be prepared for the next major crisis that shuts down food supply chains, or just learn a new skill, this book provides the tools!

    Especially beneficial if you also grow your own vegetables, but even you just buy those… Home-canned food is healthy, contains fewer additives and preservatives, and costs less in the long run.

    Roslin teaches an array of methods, including most importantly:

    1. fermentation and pickling
    2. water bath canning, and
    3. pressure canning.

    As for what’s inside? She covers not just vegetables, but also fruit, seafood, meat… Basically, anything that can be canned.

    The book explains the tools and equipment you will need as well as how to perform it safely—as well as common mistakes to avoid!

    Lest we be intimidated by the task of acquiring appropriate equipment, she also walks us through what we’ll need in that regard too!

    Last but not least, there’s also a (sizeable) collection of simple, step-by-step recipes, catering to a wide variety of tastes.

    Bottom line: a highly valuable resource that we recommend heartily.

    Get your copy of “Water Bath + Pressure Canning & Preserving Cookbook for Beginners” from Amazon today!

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  • What causes food cravings? And what can we do about them?

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    Many of us try to eat more fruits and vegetables and less ultra-processed food. But why is sticking to your goals so hard?

    High-fat, sugar-rich and salty foods are simply so enjoyable to eat. And it’s not just you – we’ve evolved that way. These foods activate the brain’s reward system because in the past they were rare.

    Now, they’re all around us. In wealthy modern societies we are bombarded by advertising which intentionally reminds us about the sight, smell and taste of calorie-dense foods. And in response to these powerful cues, our brains respond just as they’re designed to, triggering an intense urge to eat them.

    Here’s how food cravings work and what you can do if you find yourself hunting for sweet or salty foods.

    Fascinadora/Shutterstock

    What causes cravings?

    A food craving is an intense desire or urge to eat something, often focused on a particular food.

    We are programmed to learn how good a food tastes and smells and where we can find it again, especially if it’s high in fat, sugar or salt.

    Something that reminds us of enjoying a certain food, such as an eye-catching ad or delicious smell, can cause us to crave it.

    Three people holding a cone of french fries.
    Our brains learn to crave foods based on what we’ve enjoyed before. fon thachakul/Shutterstock

    The cue triggers a physical response, increasing saliva production and gastric activity. These responses are relatively automatic and difficult to control.

    What else influences our choices?

    While the effect of cues on our physical response is relatively automatic, what we do next is influenced by complex factors.
    Whether or not you eat the food might depend on things like cost, whether it’s easily available, and if eating it would align with your health goals.

    But it’s usually hard to keep healthy eating in mind. This is because we tend to prioritise a more immediate reward, like the pleasure of eating, over one that’s delayed or abstract – including health goals that will make us feel good in the long term.

    Stress can also make us eat more. When hungry, we choose larger portions, underestimate calories and find eating more rewarding.

    Looking for something salty or sweet

    So what if a cue prompts us to look for a certain food, but it’s not available?

    Previous research suggested you would then look for anything that makes you feel good. So if you saw someone eating a doughnut but there were none around, you might eat chips or even drink alcohol.

    But our new research has confirmed something you probably knew: it’s more specific than that.

    If an ad for chips makes you look for food, it’s likely a slice of cake won’t cut it – you’ll be looking for something salty. Cues in our environment don’t just make us crave food generally, they prompt us to look for certain food “categories”, such as salty, sweet or creamy.

    Food cues and mindless eating

    Your eating history and genetics can also make it harder to suppress food cravings. But don’t beat yourself up – relying on willpower alone is hard for almost everyone.

    Food cues are so powerful they can prompt us to seek out a certain food, even if we’re not overcome by a particularly strong urge to eat it. The effect is more intense if the food is easily available.

    This helps explain why we can eat an entire large bag of chips that’s in front of us, even though our pleasure decreases as we eat. Sometimes we use finishing the packet as the signal to stop eating rather than hunger or desire.

    Is there anything I can do to resist cravings?

    We largely don’t have control over cues in our environment and the cravings they trigger. But there are some ways you can try and control the situations you make food choices in.

    • Acknowledge your craving and think about a healthier way to satisfy it. For example, if you’re craving chips, could you have lightly-salted nuts instead? If you want something sweet, you could try fruit.
    • Avoid shopping when you’re hungry, and make a list beforehand. Making the most of supermarket “click and collect” or delivery options can also help avoid ads and impulse buys in the aisle.
    • At home, have fruit and vegetables easily available – and easy to see. Also have other nutrient dense, fibre-rich and unprocessed foods on hand such as nuts or plain yoghurt. If you can, remove high-fat, sugar-rich and salty foods from your environment.
    • Make sure your goals for eating are SMART. This means they are specific, measurable, achievable, relevant and time-bound.
    • Be kind to yourself. Don’t beat yourself up if you eat something that doesn’t meet your health goals. Just keep on trying.

    Gabrielle Weidemann, Associate Professor in Psychological Science, Western Sydney University and Justin Mahlberg, Research Fellow, Pyschology, Monash University

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

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  • Reduce Caffeine’s Impact on Kidneys

    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 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

    ❝Avid coffee drinker so very interested in the results Also question Is there something that you could take or eat that would prevent the caffeine from stimulating the kidneys? I tried to drink decaf from morning to night not a good result! Thanks❞

    That is a good question! The simple answer is “no” (but keep reading, because all is not lost)

    There’s no way (that we yet know of) to proof the kidneys against the stimulating effect of caffeine. This is especially relevant because part of caffeine’s stimulating effect is noradrenergic, and that “ren” in the middle there? It’s about the kidneys. This is just because the adrenal gland is situated next to them (actually, it’s pretty much sitting on top of them), hence the name, but it does mean that the kidneys are about the hardest thing in the body to have not effected by caffeine.

    However! The effects of caffeine in general can be softened a little with l-theanine (found in tea, or it can be taken as a supplement). It doesn’t stop it from working, but it makes the curve of the effect a little gentler, and so it can reduce some unwanted side effects.

    You can read more about l-theanine here:

    L-Theanine: What’s The Tea?

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    There are a lot of yoga books out there to say “bend this way, hold this that way” and so forth, but few that really explain what is going on, how, and why. And understanding those things is of course key to motivation and adherence. So that’s what this book provides!

    The book is divided into sections, and in the first part we have a tour of human anatomy and physiology. This may seem almost unrelated to yoga, but is valuable necessary-knowledge to get the most out of the next section:

    The next few parts are given over to yoga asanas (stretches, positions, poses, call them what you will in English) and now we are given a clear idea of what it is doing: we get to understand exactly what’s being stretched, what blood flow is being increased and how, what organs are being settled into their correct place, and many other such things.

    Importantly, this means we also understand why certain things are the way they are, and why they can’t be done in some other slightly different but perhaps superficially easier way.

    The style of the book is like a school textbook, really, but without patronizing the reader. The illustrations, of which there are many, are simple enough to be clear while being detailed enough to be informative.

    Bottom line: if you’re ever doing yoga at home and wondering if you should cut a certain corner, this is the book that will tell you why you shouldn’t.

    Click here to check out Science of Yoga, and optimize your practice!

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  • Needle Pain Is a Big Problem for Kids. One California Doctor Has a Plan.

    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.

    Almost all new parents go through it: the distress of hearing their child scream at the doctor’s office. They endure the emotional torture of having to hold their child down as the clinician sticks them with one vaccine after another.

    “The first shots he got, I probably cried more than he did,” said Remy Anthes, who was pushing her 6-month-old son, Dorian, back and forth in his stroller in Oakland, California.

    “The look in her eyes, it’s hard to take,” said Jill Lovitt, recalling how her infant daughter Jenna reacted to some recent vaccines. “Like, ‘What are you letting them do to me? Why?’”

    Some children remember the needle pain and quickly start to internalize the fear. That’s the fear Julia Cramer witnessed when her 3-year-old daughter, Maya, had to get blood drawn for an allergy test at age 2.

    “After that, she had a fear of blue gloves,” Cramer said. “I went to the grocery store and she saw someone wearing blue gloves, stocking the vegetables, and she started freaking out and crying.”

    Pain management research suggests that needle pokes may be children’s biggest source of pain in the health care system. The problem isn’t confined to childhood vaccinations either. Studies looking at sources of pediatric pain have included children who are being treated for serious illness, have undergone heart surgeries or bone marrow transplants, or have landed in the emergency room.

    “This is so bad that many children and many parents decide not to continue the treatment,” said Stefan Friedrichsdorf, a specialist at the University of California-San Francisco’s Stad Center for Pediatric Pain, speaking at the End Well conference in Los Angeles in November.

    The distress of needle pain can follow children as they grow and interfere with important preventive care. It is estimated that a quarter of all adults have a fear of needles that began in childhood. Sixteen percent of adults refuse flu vaccinations because of a fear of needles.

    Friedrichsdorf said it doesn’t have to be this bad. “This is not rocket science,” he said.

    He outlined simple steps that clinicians and parents can follow:

    • Apply an over-the-counter lidocaine, which is a numbing cream, 30 minutes before a shot.
    • Breastfeed babies, or give them a pacifier dipped in sugar water, to comfort them while they’re getting a shot.
    • Use distractions like teddy bears, pinwheels, or bubbles to divert attention away from the needle.
    • Don’t pin kids down on an exam table. Parents should hold children in their laps instead.

    At Children’s Minnesota, Friedrichsdorf practiced the “Children’s Comfort Promise.” Now he and other health care providers are rolling out these new protocols for children at UCSF Benioff Children’s Hospitals in San Francisco and Oakland. He’s calling it the “Ouchless Jab Challenge.”

    If a child at UCSF needs to get poked for a blood draw, a vaccine, or an IV treatment, Friedrichsdorf promises, the clinicians will do everything possible to follow these pain management steps.

    “Every child, every time,” he said.

    It seems unlikely that the ouchless effort will make a dent in vaccine hesitancy and refusal driven by the anti-vaccine movement, since the beliefs that drive it are often rooted in conspiracies and deeply held. But that isn’t necessarily Friedrichsdorf’s goal. He hopes that making routine health care less painful can help sway parents who may be hesitant to get their children vaccinated because of how hard it is to see them in pain. In turn, children who grow into adults without a fear of needles might be more likely to get preventive care, including their yearly flu shot.

    In general, the onus will likely be on parents to take a leading role in demanding these measures at medical centers, Friedrichsdorf said, because the tolerance and acceptance of children’s pain is so entrenched among clinicians.

    Diane Meier, a palliative care specialist at Mount Sinai, agrees. She said this tolerance is a major problem, stemming from how doctors are usually trained.

    “We are taught to see pain as an unfortunate, but inevitable side effect of good treatment,” Meier said. “We learn to repress that feeling of distress at the pain we are causing because otherwise we can’t do our jobs.”

    During her medical training, Meier had to hold children down for procedures, which she described as torture for them and for her. It drove her out of pediatrics. She went into geriatrics instead and later helped lead the modern movement to promote palliative care in medicine, which became an accredited specialty in the United States only in 2006.

    Meier said she thinks the campaign to reduce needle pain and anxiety should be applied to everyone, not just to children.

    “People with dementia have no idea why human beings are approaching them to stick needles in them,” she said. And the experience can be painful and distressing.

    Friedrichsdorf’s techniques would likely work with dementia patients, too, she said. Numbing cream, distraction, something sweet in the mouth, and perhaps music from the patient’s youth that they remember and can sing along to.

    “It’s worthy of study and it’s worthy of serious attention,” Meier said.

    This article is from a partnership that includes KQED, NPR, and KFF Health News.

    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.

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    Subscribe to KFF Health News’ free Morning Briefing.

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  • Make Time – by Jake Knapp and John Zeratzky

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    We live in an information-saturated world, and we have done for so long now that it’s easy to forget: we did not evolve for this!

    It’s easy to say “unplug”, but the reality is:

    We also have to actually function in this fast-paced info-dense world whether we want to or not, and we are expected to be able to handle it.

    So… How?

    Appropriately enough, authors Knapp and Zeratsky present the answer in a skimmer-friendly fashion, with summaries and bullet points and diagrams and emboldened text forease of speed-reading. Who uses such tricks?!

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