Can you ‘boost’ your immune system?
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As flu season and a likely winter COVID-19 wave approach, you may encounter both proven and unproven methods claiming to “boost” your immune system. Before you reach for supplements, learn more about how the immune system works, how vaccines give us the best protection against many illnesses, and how some lifestyle factors can help your immune system function properly.
What is the immune system?
The immune system is the body’s first line of defense against invaders like viruses, bacteria, or fungi. You develop immunity—or protection from infection—when your immune system has learned how to recognize an invader and attack it before it makes you sick.
How can you boost your immune system?
You can teach your immune system how to fight back against dangerous invaders by staying up to date on vaccines. This season’s updated flu and COVID-19 vaccines target newer variants and are recommended for everyone 6 months and older.
Vaccines reduce your risk of getting sick and spreading illness to others. Even if you get infected with a disease after you’ve been vaccinated against it, the vaccine will still increase protection against severe illness, hospitalization, and death.
People who have compromised immune systems due to certain health conditions or because they need to take immunosuppressant medications may need additional vaccine doses.
Find out which vaccines you and your children need by using the CDC’s Adult Vaccine Assessment Tool and Child and Adolescent Vaccine Assessment Tool. Talk to your health care provider about the best vaccines for your family.
Find pharmacies offering updated flu and COVID-19 vaccines by visiting Vaccines.gov.
Can supplements boost your immune system?
Many vitamin, mineral, and herbal supplements that are marketed as “immune boosting” have little to no effect on your immune system. Research is split on whether some of these supplements—like vitamin C, vitamin D, and zinc—are capable of helping your body fight infections.
Plus, the Food and Drug Administration typically does not review supplements until after they have reached store shelves, and companies can sell supplements without notifying the FDA. This means that supplements may not be accurately labeled.
Eating a diverse diet rich in fruits and vegetables is the best way for most people to absorb nutrients that support optimal immune system function. People with certain health conditions and deficiencies may need specific supplements prescribed by a health care provider. For example, people with anemia may need iron supplements in order to maintain appropriate iron levels.
Before you begin taking a new supplement, talk to your health care provider, as some supplements may interact with medications you are taking or worsen certain health conditions.
Can lifestyle factors strengthen your immune system?
Based on current evidence, there is no direct link between lifestyle changes and enhanced immunity to infections. However, maintaining a healthy lifestyle through the following practices can help ensure that your immune system functions as it should:
- Eat a diet rich in fruits and vegetables.
- Exercise regularly.
- Don’t smoke.
- Limit or eliminate alcohol consumption.
- Get seven or more hours of sleep per night.
- Reduce stress.
Taking steps to avoid contact with germs also reduces your risk of getting sick. Safer sex barriers like condoms protect against HIV, while wearing a high-quality, well-fitting mask—especially in high-risk environments—protects against COVID-19. Both of these illnesses can reduce your production of white blood cells, which protect against infection.
For more information, talk to your health care provider.
This article first appeared on Public Good News and is republished here under a Creative Commons license.
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Why are my muscles sore after exercise? Hint: it’s nothing to do with lactic acid
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As many of us hit the gym or go for a run to recover from the silly season, you might notice a bit of extra muscle soreness.
This is especially true if it has been a while between workouts.
A common misunderstanding is that such soreness is due to lactic acid build-up in the muscles.
Research, however, shows lactic acid has nothing to do with it. The truth is far more interesting, but also a bit more complex.
It’s not lactic acid
We’ve known for decades that lactic acid has nothing to do with muscle soreness after exercise.
In fact, as one of us (Robert Andrew Robergs) has long argued, cells produce lactate, not lactic acid. This process actually opposes not causes the build-up of acid in the muscles and bloodstream.
Unfortunately, historical inertia means people still use the term “lactic acid” in relation to exercise.
Lactate doesn’t cause major problems for the muscles you use when you exercise. You’d probably be worse off without it due to other benefits to your working muscles.
Lactate isn’t the reason you’re sore a few days after upping your weights or exercising after a long break.
So, if it’s not lactic acid and it’s not lactate, what is causing all that muscle soreness?
Muscle pain during and after exercise
When you exercise, a lot of chemical reactions occur in your muscle cells. All these chemical reactions accumulate products and by-products which cause water to enter into the cells.
That causes the pressure inside and between muscle cells to increase.
This pressure, combined with the movement of molecules from the muscle cells can stimulate nerve endings and cause discomfort during exercise.
The pain and discomfort you sometimes feel hours to days after an unfamiliar type or amount of exercise has a different list of causes.
If you exercise beyond your usual level or routine, you can cause microscopic damage to your muscles and their connections to tendons.
Such damage causes the release of ions and other molecules from the muscles, causing localised swelling and stimulation of nerve endings.
This is sometimes known as “delayed onset muscle soreness” or DOMS.
While the damage occurs during the exercise, the resulting response to the injury builds over the next one to two days (longer if the damage is severe). This can sometimes cause pain and difficulty with normal movement.
The upshot
Research is clear; the discomfort from delayed onset muscle soreness has nothing to do with lactate or lactic acid.
The good news, though, is that your muscles adapt rapidly to the activity that would initially cause delayed onset muscle soreness.
So, assuming you don’t wait too long (more than roughly two weeks) before being active again, the next time you do the same activity there will be much less damage and discomfort.
If you have an exercise goal (such as doing a particular hike or completing a half-marathon), ensure it is realistic and that you can work up to it by training over several months.
Such training will gradually build the muscle adaptations necessary to prevent delayed onset muscle soreness. And being less wrecked by exercise makes it more enjoyable and more easy to stick to a routine or habit.
Finally, remove “lactic acid” from your exercise vocabulary. Its supposed role in muscle soreness is a myth that’s hung around far too long already.
Robert Andrew Robergs, Associate Professor – Exercise Physiology, Queensland University of Technology and Samuel L. Torrens, PhD Candidate, Queensland University of Technology
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Intermittent Fasting In Women
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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
❝Does intermittent fasting differ for women, and if so, how?❞
For the sake of layout, we’ve put a shortened version of this question here, but the actual wording was as below, and merits sharing in full for context
Went down a rabbit hole on your site and now can’t remember how I got to the “Fasting Without Crashing” article on intermittent fasting so responding to this email lol, but was curious what you find/know about fasting for women specifically? It’s tough for me to sift through and find legitimate studies done on the results of fasting in women, knowing that our bodies are significantly different from men. This came up when discussing with my sister about how I’ve been enjoying fasting 1-2 days/week. She said she wanted more reliable sources of info that that’s good, since she’s read more about how temporary starvation can lead to long-term weight gain due to our bodies feeling the need to store fat. I’ve also read about that, but also that fasting enables more focused autophagy in our bodies, which helps with long-term staving off of diseases/ailments. Curious to know what you all think!
~ 10almonds subscriber
So, first of all, great question! Thanks for asking it
Next up, isn’t it strange? Books come in the format:
- [title]
- [title, for women]
You would not think women are a little over half of the world’s population!
Anyway, there has been some research done on the difference of intermittent fasting in women, but not much.
For example, here’s a study that looked at 1–2 days/week IF, in other words, exactly what you’ve been doing. And, they did have an equal number of men and women in the study… And then didn’t write down whether this made a difference or not! They recorded a lot of data, but neglected to note down who got what per sex:
Here’s a more helpful study, that looked at just women, and concluded:
❝In conclusion, intermittent fasting could be a nutritional strategy to decrease fat mass and increase jumping performance.
However, longer duration programs would be necessary to determine whether other parameters of muscle performance could be positively affected by IF. ❞
~ Dr. Martínez-Rodríguez et al.
Those were “active women”; another study looked at just women who were overweight or obese (we realize that “active women” and “obese or overweight women” is a Venn diagram with some overlap, but still, the different focus is interesting), and concluded:
❝IER is as effective as CER with regard to weight loss, insulin sensitivity and other health biomarkers, and may be offered as an alternative equivalent to CER for weight loss and reducing disease risk.❞
As for your sister’s specific concern about yo-yoing, we couldn’t find studies for this yet, but anecdotally and based on books on Intermittent Fasting, this is not usually an issue people find with IF. This is assumed to be for exactly the reason you mention, the increased cellular apoptosis and autophagy—increasing cellular turnover is very much the opposite of storing fat!
You might, by the way, like Dr. Mindy Pelz’s “Fast Like A Girl”, which we reviewed previously
Take care!
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Why You Can’t Deep Squat (And the Benefits You’re Missing)
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Matt Hsu fought his own battle with chronic pain from the age of 16 in his feet, knees, hips, back, shoulders, elbows, forearms, wrists, hands, and head. Seeking answers, he’s spent a career in corrective exercise, posture alignment, structural integration, orthopedic exercise, sports medicine, and has more certifications than we care to list. In short, he knows his stuff.
Yes you can (with some work)
The deep squat, also called Asian squat, Slav squat, sitting squat, resting squat, primal squat, and various other names, is an important way of sitting that has implications for a lot of aspects of health.
Why it’s so important: it preserves the mobility of our hips, ankles, and everything in between, and maintaining especially the hip mobility makes a big difference not only to general health, but also to reducing the risk of injury. It also maintains lower body strength, making falls in older age less likely in the first place, and if falls do happen, makes injury less likely, and if injury does happen, makes the injury likely less severe.
An important misconception: there is a popular, but unfounded, belief that the ability or inability to do this is decided by genes—or if not outright decided, that at the very least Asians and Slavs have a genetic advantage. However, this is simply not true. Westerners and others can learn to do it just fine, and on the flipside, Asians and Slavs who grew up in the West may often struggle with it. The truth is, the deciding factor is lifestyle: if your culture involves sitting this way more often, you’ll be able to do it more comfortably and easily than if you’re just now trying it for the first time.
Factors that you can control: you can’t change where you grew up, but you can change how you sit down now. Achieving the squat requires repeated position practice, and the more frequently you do so (even if you just start with a few seconds and work your way up to longer periods), the better you’ll get at it. And, on the contrary, sitting in chairs weakens and shortens the muscles involved, so any time you spend sitting in chairs is working against you. There are many reasons it’s advisable to avoid sitting in chairs more than necessary, and this is one of them.
10almonds tip: a limiting factor for many people initially is ankle flexibility, which may result in one’s center of gravity being a bit far back, leading to a tendency to have to change something to avoid toppling over backwards. Rather than holding onto something immobile (e.g. furniture) in front of where you are sitting, consider simply holding an object in front of you in your hands. A book is a fine example; holding that in front of you (feel free to read the book) will shift your center of gravity forwards a bit, and will thus allow you to sit there a little longer, thus improving your strength and flexibility while you do, until you can do it without holding something in front of you. If you try with a book and you’re still prone to toppling backwards, try with something heavier, but do use the minimum weight necessary, because ultimately the counterbalance is just a crutch to get you to where you need to be.
For more visual advice on how to do it, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
Take care!
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The Joy Of Missing Out
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What this is not going to be: a sour grapes thing.
What this is going to be: an exploration of how the grass is greener
on the other side of the fencewherever you water itIt’s easy to feel lonely and isolated, even in today’s increasingly-connected world. We’ve tackled that topic before:
How To Beat Loneliness & Isolation
One of the more passive (but still reasonable) ways of reducing isolation is to simply say “yes” more, which we discussed (along with other more active strategies) here:
When The World Moves Without Us… Can We Side-Step Age-Related Alienation?
But, is there any benefit to be gained from not being in the thick of things?
Sometimes some things associated with isolation are not, in reality, necessarily isolating. See for example:
But, the implications of embracing the “joy of missing out” are much more wide-reaching:
Wherever you are, there you are
You’ve probably read before the phrase “wherever you go, there you are”, but this phrasing brings attention to the fact that you already are where you are.
There are quite possibly aspects of your current life/situation that are not ideal, but take a moment to appreciate where you are in life. At the very least, you are probably in a safe warm dry house with plenty of food available; chances are you have plenty of luxuries too.
See also: How To Get Your Brain On A More Positive Track (Without Toxic Positivity)
And yet, it’s easy to have a fear of missing out. Even billionaires fear they do not have enough and must acquire more in order to be truly secure and fulfilled.
As it goes for material wealth, so it also goes for social wealth—in other words, we may worry about such questions as: on whom can we rely, and who will be there for us if we need them? Do we, ultimately, have enough social capital to be secure?
- For social media influencers, it’ll be follower counts and engagement.
- For the family-oriented, it might be the question of whose house a given holiday gets celebrated at, and who attends, and who does it best.
- In more somber matters, think about funerals, and those where “there was such a huge turnout” vs “almost nobody attended”.
It sure sounds a lot like a dog-eat-dog world in which missing out sucks! But it doesn’t have to.
So let’s recap: your current situation is probably, all things considered, not bad. There is probably much in life to enjoy. If people do not come to your holiday event, then those are not people who would have improved things for you. If people do not attend your funeral even, then well, you yourself will be late, so hey.
Right now though, you are alive, so…
Enjoy the moment; enjoy your life for you.
Invest in yourself. Better yourself. Improve your environment for yourself little by little.
We spend a lot of time in life living up to everyone’s expectations, often without stopping to question whether it is what we want, or sometimes putting aside what we want in favor of what is wanted of us.
- Sometimes, such ostensible altruism is laudable and good (the point of today’s article is not “be a selfish jerk”; sometimes we should indeed shelve our self-interest in favour of doing something for the common good)
- Sometimes, it’s just pointless sacrifice that benefits nobody (the point of today’s article is “there is no point in playing stressful, stacked games when you could have a better time not doing that”)
If you are about to embark on an endeavor that you don’t really want to, take a moment to seriously consider which of the above two situations this is, and then act accordingly.
For a deeper dive into that, you might like this book that we reviewed a while back:
The Joy of Saying No – by Natalie Lue
Enjoy!
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Do Probiotics Work For Weight 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.
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
❝Can you talk about using probiotics for weight loss? Thanks❞
Great question! First, a quick catch-up:
How Much Difference Do Probiotic Supplements Make, Really?
Our above-linked article covers a number of important benefits of probiotic supplements, but we didn’t talk about weight loss at all. So let’s examine whether probiotics are useful for weight loss.
Up-front summary: the science is unclear
This 2021 systematic review found that they are indeed very effective:
❝The intake of probiotics or synbiotics could lead to significant weight reductions, either maintaining habitual lifestyle habits or in combination with energy restriction and/or increased physical activity for an average of 12 weeks.
Specific strains belonging to the genus Lactobacillus and Bifidobacterium were the most used and those that showed the best results in reducing body weight.
Both probiotics and synbiotics have the potential to help in weight loss in overweight and obese populations.❞
This slightly older (2015) systematic review and meta-analysis found the opposite:
❝Collectively, the RCTs examined in this meta-analysis indicated that probiotics have limited efficacy in terms of decreasing body weight and BMI and were not effective for weight loss.❞
Source: Probiotics for weight loss: a systematic review and meta-analysis
And in case that’s not balanced enough, this 2020 randomized controlled trial got mixed results:
❝Regression analysis performed to correlate abundance of species following supplementation with body composition parameters and biomarkers of obesity found an association between a decrease over time in blood glucose and an increase in Lactobacillus abundance, particularly in the synbiotic group.
However, the decrease over time in body mass, BMI, waist circumstance, and body fat mass was associated with a decrease in Bifidobacterium abundance.❞
Source: Effects of Synbiotic Supplement on Human Gut Microbiota, Body Composition and Weight Loss in Obesity
Summary
Probiotics may or may not work for weight loss.
In all likelihood, it depends on the blend of cultures contained in the supplement. It’s possible that Lactobacillus is more beneficial for weight loss than Bifidobacterium, which latter may actually reduce weight loss.
Or it might not, because that was just one study and correlation ≠ causation!
We’d love to give you a hard-and-fast answer, but if the data doesn’t support a hard-and-fast answer, we’re not going to lie to you.
What we can say for sure though is that probiotics come with very many health benefits, so whether or not weight loss is one of them, they’re a good thing to have for most people.
Some further articles that may interest you:
- How Much Difference Do Probiotic Supplements Make, Really? ← the aforementioned article
- Making Friends With Your Gut (You Can Thank Us Later) ← gut health 101
- Burn! How To Boost Your Metabolism ← these things can help change your metabolic base rate, which is highly relevant to weight loss
- How To Do HIIT (Without Wrecking Your Body) ←unlike most forms of exercise, which cause the body to slow the metabolism afterwards to compensate, high-intensity interval training results in an increased metabolic rate (so generally: fat-burning) for several hours after training.
Take care!
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Smart Sex – by Dr. Emily Morse
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First, what this isn’t: this isn’t a mere book of sex positions and party tricks, nor is it a book of Cosmo-style “drive your man wild by using hot sauce as lube” advice.
What it offers instead, is a refreshingly mature take on sex, free from the “teehee” titillations and blushes that many books of the genre go for.
Dr. Emily Morse outlines five pillars of sex:
- Embodiment
- Health
- Collaboration
- Self-knowledge
- Self-acceptance
…and talks about each of them in detail, and how we can bring them together. And, of course, how we or our partner(s) could accidentally sabotage ourselves or each other, and the conversations we can (and should!) have, to work past that.
She also, critically, and this is a big source of value in the book, looks at “pleasure thieves”: stress, trauma, and shame. The advice for overcoming these is not “don’t worry; be happy” but rather is actual practical steps one can take.
The style throughout is direct and unpatronizing. Since the advice within pertains to everyone who has and/or wants an active sex life, very little is divided by gender etc.
There is some attention given to anatomy and physiology, complete with clear diagrams. Honestly, most people could benefit from these, because most people’s knowledge of the relevant anatomy stopped with a very basic high school text book diagram that missed a lot out.
Bottom line: this book spends more time on what’s between your ears than what’s between your legs, and yet is very comprehensive in all areas. Everyone has something to gain from this one.
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