Qigong: Breathing Is Good (Magic Remains Unverified)

In Tuesday’s newsletter, we asked you for your opinions of qigong, and got the above-depicted, below-described, set of responses:

• About 55% said “Qigong is just breathing, but breathing exercises are good for the health”
• About 41% said “Qigong helps regulate our qi and thus imbue us with healthy vitality”
• One (1) person said “Qigong is a mystical waste of time and any benefits are just placebo”

The sample size was a little low for this one, but the results were quite clearly favorable, one way or another.

So what does the science say?

Qigong is just breathing: True or False?

True or False, depending on how we want to define it—because qigong ranges in its presentation from indeed “just breathing exercises”, to “breathing exercises with visualization” to “special breathing exercises with visualization that have to be exactly this way, with these hand and sometimes body movements also, which also must be just right”, to far more complex definitions that involve qi by various mystical definitions, and/or an appeal to a scientific analog of qi; often some kind of bioelectrical field or such.

There is, it must be said, no good quality evidence for the existence of qi.

Writer’s note, lest 41% of you want my head now: I’ve been practicing qigong and related arts for about 30 years and find such to be of great merit. This personal experience and understanding does not, however, change the state of affairs when it comes to the availability (or rather, the lack) of high quality clinical evidence to point to.

Which is not to say there is no clinical evidence, for example:

Acute Physiological and Psychological Effects of Qigong Exercise in Older Practitioners

…found that qigong indeed increased meridian electrical conductance!

Except… Electrical conductance is measured with galvanic skin responses, which increase with sweat. But don’t worry, to control for that, they asked participants to dry themselves with a towel. Unfortunately, this overlooks the fact that a) more sweat can come where that came from, because the body will continue until it is satisfied of adequate homeostasis, and b) drying oneself with a towel will remove the moisture better than it’ll remove the salts from the skin—bearing in mind that it’s mostly the salts, rather than the moisture itself, that improve the conductivity (pure distilled water does conduct electricity, but not very well).

In other words, this was shoddy methodology. How did it pass peer review? Well, here’s an insight into that journal’s peer review process…

❝The peer-review system of EBCAM is farcical: potential authors who send their submissions to EBCAM are invited to suggest their preferred reviewers who subsequently are almost invariably appointed to do the job. It goes without saying that such a system is prone to all sorts of serious failures; in fact, this is not peer-review at all, in my opinion, it is an unethical sham.❞

~ Dr. Edzard Ernst, a founding editor of EBCAM (he since left, and decries what has happened to it since)

One of the other key problems is: how does one test qigong against placebo?

Scientists have looked into this question, and their answers have thus far been unsatisfying, and generally to the tune of the true-but-unhelpful statement that “future research needs to be better”:

Problems of scientific methodology related to placebo control in Qigong studies: A systematic review

Most studies into qigong are interventional studies, that is to say, they measure people’s metrics (for example, blood pressure, heart rate, maybe immune function biomarkers, sleep quality metrics of various kinds, subjective reports of stress levels, physical biomarkers of stress levels, things like that), then do a course of qigong (perhaps 6 weeks, for example), then measure them again, and see if the course of qigong improved things.

This almost always results in an improvement when looking at the before-and-after, but it says nothing for whether the benefits were purely placebo.

We did find one study that claimed to be placebo-controlled:

A placebo-controlled trial of ‘one-minute qigong exercise’ on the reduction of blood pressure among patients with essential hypertension

…but upon reading the paper itself carefully, it turned out that while the experimental group did qigong, the control group did a reading exercise. Which is… Saying how well qigong performs vs reading (qigong did outperform reading, for the record), but nothing for how well it performs vs placebo, because reading isn’t a remotely credible placebo.

See also: Placebo Effect: Making Things Work Since… Well, A Very Long Time Ago ← this one explains a lot about how placebo effect does work

Qigong is a mystical waste of time: True or False?

False! This one we can answer easily. Interventional studies invariably find it does help, and the fact remains that even if placebo is its primary mechanism of action, it is of benefit and therefore not a waste of time.

Which is not to say that placebo is its only, or even necessarily primary, mechanism of action.

Even from a purely empirical evidence-based medicine point of view, qigong is at the very least breathing exercises plus (usually) some low-impact body movement. Those are already two things that can be looked at, mechanistic processes pointed to, and declarations confidently made of “this is an activity that’s beneficial for health”.

See for example:

• Effects of Qigong practice in office workers with chronic non-specific low back pain: A randomized control trial
• Qigong for the Prevention, Treatment, and Rehabilitation of COVID-19 Infection in Older Adults
• Impact of Medical Qigong on quality of life, fatigue, mood and inflammation in cancer patients: a randomized controlled trial

…and those are all from respectable journals with meaningful peer review processes.

None of them are placebo-controlled, because there is no real option of “and group B will only be tricked into believing they are doing deep breathing exercises with low-impact movements”; that’s impossible.

But! They each show how doing qigong reliably outperforms not doing qigong for various measurable metrics of health.

And, we chose examples with physical symptoms and where possible empirically measurable outcomes (such as COVID-19 infection levels, or inflammatory responses); there are reams of studies showings qigong improves purely subjective wellbeing—but the latter could probably be claimed for any enjoyable activity, whereas changes in inflammatory biomarkers, not such much.

In short: for most people, it indeed reliably helps with many things. And importantly, it has no particular risks associated with it, and it’s almost universally framed as a complementary therapy rather than an alternative therapy.

This is critical, because it means that whereas someone may hold off on taking evidence-based medicines while trying out (for example) homeopathy, few people are likely to hold off on other treatments while trying out qigong—since it’s being viewed as a helper rather than a Hail-Mary.

Want to read more about qigong?

Here’s the NIH’s National Center for Complementary and Integrative Health has to say. It cites a lot of poor quality science, but it does mention when the science it’s citing is of poor quality, and over all gives quite a rounded view:

Qigong: What You Need To Know

Enjoy!

Intermittent Fasting: What’s the truth?

Before we get to facts and fictions, let’s quickly cover:

What is Intermittent Fasting?

Intermittent Fasting (IF) is an umbrella term for various kinds of time-restricted fasting, based on a schedule. Types include:

Time-restricted IF, for example:

• 16:8—Fast for 16 hours, eat during an 8-hour window
• 18:6–Fast for 18 hours, eat during a 6-hour window
• 20:4—Fast for 20 hours, eat during a 4-hour window

24hr fasting, including:

• Eat Stop Eat—basically, take a day off from eating once a week
• Alternate Day Fasting—a more extreme version of the above; it is what it sounds like; eat one day, fast the next, repeat

Non-fast fasting, e.g:

• 5:2—Eat normally for 5 days, have a very reduced calorie intake (⅓ of normal intake) for the other 2 days
• Fruit Fasting—have a small amount of fruit on “fast” days, but no other food
• The Warrior Diet—as above, but include a small amount of non-starchy vegetables

Why IF?

While IF is perhaps most commonly undertaken as a means of fat loss or fat management (i.e., keeping fat down when it is already low), others cite different reasons, such as short term cognitive performance or long-term longevity.

But… Does it work?

Here we get into the myth-busting bit!

“IF promotes weight loss”

Mix of True and False. It can! But it also doesn’t have to. If you’re a bodybuilder who downs 4,000 calories in your 4hr eating window, you’re probably not going to lose weight! For such people, this is of course “a feature, not a bug” of IF—especially as it has been found that, in an acute study, IF did not adversely impact muscle protein synthesis.

“IF promotes fat loss, without eating less”

Broadly True. IF was found to be potentially equal to, but not necessarily better than, eating less.

“IF provides metabolic benefits for general health”

Broadly True. IF (perhaps counterintuitively) decreases the risk of insulin resistance, and also has anti-inflammatory effects, benefits a healthy gut microbiome, and promotes healthy autophagy (which as we noted in a previous edition of 10almonds, is important against both aging and cancer)

However, results vary according to which protocol you’re observing…

For what it’s worth, 16:8 is perhaps the most-studied protocol. Because such studies tend to have the eating window from midday to 8pm, this means that—going against popular wisdom—part of the advice here is basically “skip breakfast”.

“Unlike caloric restriction, IF is sustainable and healthy as a long-term protocol”

Broadly True. Of course, there’s a slight loophole here in that IF is loosely defined—technically everyone fasts while they’re sleeping, at the very least!

However, for the most commonly-studied IF method (16:8), this is generally very sustainable and healthy and for most people.

On the other hand, a more extreme method such as Alternate Day Fasting, may be trickier to sustain (even if it remains healthy to do so), because it’s been found that hunger does not decrease on fasting days—ie, the body does not “get used to it”.

The American Journal of Clinical Nutrition wrote:

❝Alternate-day fasting was feasible in nonobese subjects, and fat oxidation increased. However, hunger on fasting days did not decrease, perhaps indicating the unlikelihood of continuing this diet for extended periods of time. Adding one small meal on a fasting day may make this approach to dietary restriction more acceptable.❞

American Journal of Clinical Nutrition

“IF improves mood and cognition”

Mix of True and False (plus an honest “We Don’t Know” from researchers).

Many studies have found benefits to both mood and cognition, but in the short-term, fasting can make people “hangry” (or: “experience irritability due to low blood sugar levels”, as the scientists put it), and in the long term, it can worsen symptoms of depression for those who already experience such—although some studies have found it can help alleviate depressive symptoms.

Basically this is one where researchers typically append the words “more research is needed” to their summaries.

“Anyone can do IF”

Definitely False, unless going by the absolute broadest possible interpretation of what constitutes “Intermittent Fasting” to the point of disingenuity.

For example, if you are Type 1 Diabetic, and your blood sugars are hypo, and you wait until tomorrow to correct that, you will stand a good chance of going into a coma instead. So please don’t.

(On the other hand, IF may help achieve remission of type 2 diabetes)

Lastly, IF is broadly not recommend to children and adolescents, anyone pregnant or breastfeeding, and certain underlying health conditions not mentioned above (we’re not going to try to give an exhaustive list here, but basically, if you have a chronic health condition, we recommend you check with your doctor first).

WHICH APP?

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Choosing a fasting app

Thinking of giving IF a try and would like a little extra help? We’ve got you covered!

Check out: Livewire’s 7 Best Intermittent Fasting Apps of 2023

Prefer to just trust us with a recommendation?

We like BodyFast—it’s #2 on Lifewire’s list, but it has an array of pre-set plans to choose from (unlike Lifewire’s #1, Zero), and plenty of clear tracking, scheduling help, and motivational features.

Both are available on both iOS and Android:

See the BodyFast App / See the Zero App