Breast Milk’s Benefits That Are (So Far) Not Replicable
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Simply The Breast 🎶
In Wednesday’s newsletter, we asked you for your opinion on breast vs formula milk (for babies!), and got the above-depicted, below-described, set of responses:
- 80% said “Breast is best, as the slogan goes, and should be first choice”
- 20% said “They both have their strengths and weaknesses; use whatever”
- 0% said “Formula is formulated to be best, and should be first choice”
That’s the first time we’ve ever had a possible poll option come back with zero votes whatsoever! It seems this topic is relatively uncontentious amongst our readership, so we’ll keep things brief today, but there is still a little mythbusting to be done.
So, what does the science say?
[Breast milk should be the first choice] at least for the few few weeks and months for the benefit of baby’s health as breast milk has protective factors formula does not: True or False?
True! The wording here was taken from one of our readers’ responses, by the way (thank you, Robin). There are a good number of those protective factors, the most well-known of which is passing on immune cells and cell-like things; in other words, immune-related information being passed from parent* to child.
*usually the mother, though in principle it could be someone else and in practice sometimes it is; the only real requirements are that the other person be healthy, lactating, and willing.
As for immune benefits, see for example:
Perspectives on Immunoglobulins in Colostrum and Milk
And for that matter, also:
(Colostrum is simply the milk that is produced for a short period after giving birth; the composition of milk will tend to change later)
In any case, immunoglobulin A is a very important component in breast milk (colostrum and later), as well as lactoferrin (has an important antimicrobial effect and is good for the newborn’s gut), and a plethora of cytokines:
As for that about the gut, lactoferrin isn’t the only breast milk component that benefits this, by far, and there’s a lot that can’t be replicated yet:
Human Breast Milk and the Gastrointestinal Innate Immune System
As long as your infant/child is nutritiously fed, it shouldn’t matter if it comes from breast or formula: True or False?
False! Formula milk will not convey those immune benefits.
This doesn’t mean that formula-feeding is neglectful; as several people who commented mentioned*, there are many reasons a person may not be able to breastfeed, and they certainly should not be shamed for that.
*(including the reader whose words we borrowed for this True/False item; the words we quoted above were prefaced with: “Not everyone is able to breastfeed for many different reasons”)
But, while formula milk is a very good second choice, and absolutely a respectable choice if breast milk isn’t an option (or an acceptable option) for whatever reason, it still does not convey all the health benefits of breast milk—yet! The day may come when they’ll find a way to replicate the immune benefits, but today is not that day.
They both have their strengths and weaknesses: True or False?
True! But formula’s strengths are only in the category of convenience and sometimes necessity—formula conveys no health benefits that breast milk could not do better, if available.
For many babies, formula means they get to eat, when without it they would starve due to non-availability of breast milk. That’s a pretty important role!
Note also: this is a health science publication, not a philosophical publication, but we’d be remiss not to mention one thing; let’s bring it in under the umbrella of sociology:
The right to bodily autonomy continues to be the right to bodily autonomy even if somebody else wants/needs something from your body.
Therefore, while there are indeed many good reasons for not being able to breastfeed, or even just not being safely* able to breastfeed, it is at the very least this writer’s opinion that nobody should be pressed to give their reason for not breastfeeding; “no” is already a sufficient answer.
*Writer’s example re safety: when I was born, my mother was on such drugs that it would have been a very bad idea for her to breastfeed me. There are plenty of other possible reasons why it might be unsafe for someone one way or another, but “on drugs that have a clear ‘do not take while pregnant or nursing’ warning” is a relatively common one.
All that said, for those who are willing and safely able, the science is clear: breast is best.
Want to read more?
The World Health Organization has a wealth of information (including explanations of its recommendations of, where possible, exclusive breastfeeding for the first 6 months, ideally continuing some breastfeeding for the first 2 years), here:
World Health Organization | Breastfeeding
Take care!
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SuperLife – by Darin Olien
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We mostly know more or less what we’re supposed to be doing, at least to a basic level, when it comes to diet and exercise. So why don’t we do it?
Where Darin Olien excels in this one is making healthy living—mostly the dietary aspects thereof—not just simple, but also easy.
He gives principles we can apply rather than having to memorize lots of information… And his “this will generally be better than that” format also means that the feeling is one of reducing harm, increasing benefits, without needing to get absolutist about anything. And that, too, makes healthy living easier.
The book also covers some areas that a lot of books of this genre don’t—such as blood oxygenation, and maintenance of healthy pH levels—and aspects such as those are elements that help this book to stand out too.
Don’t be put off and think this is a dry science textbook, though—it’s not. In fact, the tone is light and the style is easy-reading throughout.
Bottom line: if you want to take an easy, casual, but scientifically robust approach to tweaking your health for the better, this book will enable you to do that.
Click here to check out SuperLife and start upgrading your health!
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Clean – by Dr. James Hamblin
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Our skin is our largest organ, and it’s easy to forget that, and how much it does for us. All things considered, it’s good to take good care of it! But what if we sometimes take too much “care” of it?
Dr. James Hamblin, a medical doctor-turned-writer, has explored this a lot both personally and in research. Through such, he has come to the conclusion there’s definitely a “sweet spot” of personal hygiene:
- Too little, and the Bubonic plague sweeps through Europe, or other plagues sweep through other places when European invaders came.
- Too much, and we strip our skin of one of its greatest qualities: the ability to protect us.
Dr. Hamblin asks (and answers) such questions as:
- What is good hygiene, and what is neurotically doing ourselves multiple levels of harm because advertising companies shamed us into doing so?
- Is it good or bad to use a series of products, each to undo the problem caused by the previous?
- What the difference between a 5-step skincare routine, and a series of gratuitous iatrogenic damage?
- Which products clean us most helpfully, and which clean us most harmfully?
- How often should we bathe/shower, really?
If the book has a weak point, it’s that it’s written mostly with his body in mind. That makes a difference when it comes to hairwashing, for example. He’s a white guy with short hair. If you’re black and/or have long hair, for example, your haircare needs will be quite different. Similarly, many women engage in shaving/depilation in places that most men don’t, and the consequences of that choice (and implications for any extra washing needs/harms) aren’t covered.
Bottom line: notwithstanding the aforementioned blind-spots, this book will help readers reduce the amount of harm we are doing to our bodies with our washing routines, without sacrificing actual hygiene.
Click here to check out Clean and help your skin to help you!
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The Cold Truth About Respiratory Infections
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The Pathogens That Came In From The Cold
Yesterday, we asked you about your climate-themed policy for avoiding respiratory infections, and got the above-depicted, below-described, set of answers:
- About 46% of respondents said “Temperature has no bearing on infection risk”
- About 31% of respondents said “It’s important to get plenty of cold, fresh air, as this kills/inactivates pathogens”
- About 22% of respondents said “It’s important to stay warm to avoid getting colds, flu, etc”
Some gave rationales, including…
For “stay warm”:
❝Childhood lessons❞
For “get cold, fresh air”:
❝I just feel that it’s healthy to get fresh air daily. Whether it kills germs, I don’t know❞
For “temperature has no bearing”:
❝If climate issue affected respiratory infections, would people in the tropics suffer more than those in colder climates? Pollutants may affect respiratory infections, but I doubt just temperature would do so.❞
So, what does the science say?
It’s important to stay warm to avoid getting colds, flu, etc: True or False?
False, simply. Cold weather does increase the infection risk, but for reasons that a hat and scarf won’t protect you from. More on this later, but for now, let’s lay to rest the idea that bodily chilling will promote infection by cold, flu, etc.
In a small-ish but statistically significant study (n=180), it was found that…
❝There was no evidence that chilling caused any acute change in symptom scores❞
Read more: Acute cooling of the feet and the onset of common cold symptoms
Note: they do mention in their conclusion that chilling the feet “causes the onset of cold symptoms in about 10% of subjects who are chilled”, but the data does not support that conclusion, and the only clear indicator is that people who are more prone to colds generally, were more prone to getting a cold after a cold water footbath.
In other words, people who were more prone to colds remained more prone to colds, just the same.
It’s important to get plenty of cold, fresh air, as this kills/inactivates pathogens: True or False?
Broadly False, though most pathogens do have an optimal operating temperature that (for obvious reasons) is around normal human body temperature.
However, given that they don’t generally have to survive outside of a host body for long to get passed on, the fact that the pathogens may be a little sluggish in the great outdoors will not change the fact that they will be delighted by the climate in your respiratory tract as soon as you get back into the warm.
With regard to the cold air not being a reliable killer/inactivator of pathogens, we call to the witness stand…
Polar Bear Dies From Bird Flu As H5N1 Spreads Across Globe
(it was found near Utqiagvik, one of the northernmost communities in Alaska)
Because pathogens like human body temperature, raising the body temperature is a way to kill/inactivate them: True or False?
True! Unfortunately, it’s also a way to kill us. Because we, too, cannot survive for long above our normal body temperature.
So, for example, bundling up warmly and cranking up the heating won’t necessarily help, because:
- if the temperature is comfortable for you, it’s comfortable for the pathogen
- if the temperature is dangerous to the pathogen, it’s dangerous to you too
This is why the fever response evolved, and/but why many people with fevers die anyway. It’s the body’s way of playing chicken with the pathogen, challenging “guess which of us can survive this for longer!”
Temperature has no bearing on infection risk: True or False?
True and/or False, circumstantially. This one’s a little complex, but let’s break it down to the essentials.
- Temperature has no direct effect, for the reasons we outlined above
- Temperature is often related to humidity, which does have an effect
- Temperature does tend to influence human behavior (more time spent in open spaces with good ventilation vs more time spent in closed quarters with poor ventilation and/or recycled air), which has an obvious effect on transmission rates
The first one we covered, and the third one is self-evident, so let’s look at the second one:
Temperature is often related to humidity, which does have an effect
When the environmental temperature is warmer, water droplets in the air will tend to be bigger, and thus drop to the ground much more quickly.
When the environmental temperature is colder, water droplets in the air will tend to be smaller, and thus stay in the air for longer (along with any pathogens those water droplets may be carrying).
Some papers on the impact of this:
- Cold temperature and low humidity are associated with increased occurrence of respiratory tract infections
- A Decrease in Temperature and Humidity Precedes Human Rhinovirus Infections in a Cold Climate
So whatever temperature you like to keep your environment, humidity is a protective factor against respiratory infections, and dry air is a risk factor.
So, for example:
- If the weather doesn’t suit having good ventilation, a humidifier is a good option
- Being in an airplane is one of the worst places to be for this, outside of a hospital
Don’t have a humidifier? Here’s an example product on Amazon, but by all means shop around.
A crock pot with hot water in and the lid off is also a very workable workaround too
Take care!
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Stretching for 50+ – by Dr. Karl Knopf
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Dr. Knopf explores in this book the two-way relationship between aging and stretching (i.e., each can have a large impact on the other). Thinking about stretching in those terms is an important reframe for going into any stretching program. We’d say “after the age of 50”, but honestly, at any age. But this book is written with over-50s in mind, as the title goes.
There’s an extensive encyclopedic section on stretches per body part, which is exactly as you might expect from any book of this kind. There is also a flexibility self-assessment, so that progress can be measured easily, and so that the reader knows where might need more improvement.
Perhaps this book’s greatest strength is the section on specialized programs based on things ranging from working to improve symptoms of any chronic conditions you may have (or at least working around them, if outright improvement is not possible by stretching), to your recreational activities of importance to you—so, what kinds of flexibilities will be important to you, and also, what kinds of injury you are most likely to need to avoid.
Bottom line: if you’re 50 and would like to do more stretching and less aging, then this book can help with that.
Click here to check out Stretching for 50+, and extend your healthspan!
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Is ADHD Being Over-Diagnosed For Cash?
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Is ADHD Being Systematically Overdiagnosed?
The BBC’s investigative “Panorama” program all so recently did a documentary in which one of their journalists—who does not have ADHD—went to three private clinics and got an ADHD diagnosis from each of them:
- The BBC documentary: Private ADHD Clinics Exposed (28 mins)
- Their “5 Minutes” version: ADHD Undercover: How I Was Misdiagnosed (6 mins)
So… Is it really a case of show up, pay up, and get a shiny new diagnosis?
The BBC Panorama producers cherry-picked 3 private providers, and during those clinical assessments, their journalist provided answers that would certainly lead to a diagnosis.
This was contrasted against a three-hour assessment with an NHS psychiatrist—something that rarely happens in the NHS. Which prompts the question…
How did he walk into a 3-hour psychiatrist assessment, when most people have to wait in long waiting lists for a much more cursory appointment first with assorted gatekeepers, before going on another long waiting list, for an also-much-shorter appointment with a psychiatrist?
That would be because the NHS psychiatrist was given advance notification that this was part of an investigation and would be filmed (the private clinics were not gifted the same transparency)
So, maybe just a tad unequal treatment!
In case you’re wondering, here’s what that very NHS psychiatrist had to say on the topic:
Is it really too easy to be diagnosed with ADHD?
(we’ll give you a hint—remember Betteridge’s Law!)
❝Since the documentary aired, I have heard from people concerned that GPs could now be more likely to question legitimate diagnoses.
But as an NHS psychiatrist it is clear to me that the root of this issue is not overdiagnosis.
Instead, we are facing the combined challenges of remedying decades of underdiagnosis and NHS services that were set up when there was little awareness of ADHD.❞
~ Dr. Mike Smith, Psychiatrist
The ADHD foundation, meanwhile, has issued its own response, saying:
❝We are disappointed that BBC Panorama has opted to broadcast a poorly researched, sensationalist piece of television journalism.❞
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A Cold Shower A Day Keeps The Doctor Away?
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A Cold Shower A Day Keeps The Doctor Away?
This is Dutch extreme athlete Wim Hof, also known as “The Iceman”! He’s broken many world records mostly relating to the enduring the cold, for example:
- climbing Mount Kilimanjaro in shorts
- running a half-marathon above the Arctic Circle barefoot
- standing in a container completely covered with ice cubes for more than 112 minutes
You might not want to do yoga in your pyjamas on an iceberg, but you might like…
- better circulatory health
- reduced risk of stroke
- a boosted immune system
- healthier skin
- more energy and alertness
…and things like that. Wim Hof’s method is not just about extreme athletic achievements; most of what he does, the stuff that can benefit the rest of us, is much more prosaic.
The Wim Hof Method
For Wim Hof, three things are key:
- Breathing (See: Wim Hof Method Breathing Exercises)
- Commitment (See: How to Increase Willpower)
- Cold therapy (See: Benefits of Cold Therapy)
Today, we’re going to be focusing on the last one there.
What are the benefits of Cold Therapy?
Once upon a time, we didn’t have central heating, electric blankets, thermal underwear, and hot showers. In fact, once upon a time, we didn’t have houses or clothes. We used to be a lot more used to the elements! And while it’s all well and good to enjoy modern comforts, it has left our bodies lacking practice.
Practice at what? Most notably: vasodilation and vasoconstriction, in response to temperature changes. Either:
- vasodilation, because part of our body needs more blood to keep it warm and nourished, or
- vasoconstriction, because part of our body needs less blood running through it to get cooled down.
Switching between the two gives the blood vessels practice at doing it, and improves vascular muscle tone. If your body doesn’t get that practice, your blood vessels will be sluggish at making the change. This can cause circulation problems, which in turn have a big impact in many other areas of health, including:
- cardiovascular disease
- stroke risk
- mood instability
- nerve damage in extremities
On the flipside, if the blood vessels do get regular practice at dilating and constricting, you might enjoy lower risk of those things, and instead:
- improved immune response
- healthier skin
- better quality sleep
- more energy and alertness
- improved sexual performance/responsiveness
So, how to get that, without getting extreme?
As today’s title suggests, “a cold shower a day” is a great practice.
You don’t have to jump straight in, especially if you think your circulation and vascular responses might be a bit sluggish in the first instance. In fact, Wim Hof recommends:
- Week 1: Thirty seconds of cold water at the end of a warm shower each morning
- Week 2: One minute of cold water at the end of a warm shower each morning
- Week 3: A minute and a half of cold water at the end of a warm shower each morning
- Week 4: Two minutes of cold water at the end of a warm shower each morning
How cold is cold?
The benefits of cold exposure begin at around 16ºC / 60ºF, so in most places, water from the cold water mains is sufficiently cold.
As your body becomes more used to making the quick-change on a vascular level, the cold water will seem less shocking to your system. In other words, on day 30 it won’t hit you like it did on day one.
At that point, you can either continue with your two-minutes daily cold shower, and reap the benefits, or if you’re curious to push it further, that’s where ice baths come in!
Can anyone do it, or are any conditions contraindicated?
As ever, we’re a health and productivity newsletter, not doctors, let alone your doctors. Nothing here is medical advice. However, Wim Hof himself says:
❝Listen to your body, and never force the practices. We advise against doing Wim Hof Method if you are dealing with any of the following:
- Epilepsy
- High blood pressure
- Coronary heart disease
- A history of serious healthy issues like heart failure or stroke
- Pregnancy*
- Childhood*❞
*There is simply not enough science regarding the effects of cold exposure on people who are pregnant, or children. Obviously, we don’t expect this to be remedied anytime soon, because the study insitutions’ ethics boards would (rightly!) hold up the study.
As for the other conditions, and just generally if unsure, consult a doctor.
As you can see, this does mean that a limitation of Cold Therapy is that it appears to be far better as a preventative, since it helps guard against the very conditions that could otherwise become contraindications.
We haven’t peppered today’s main feature with study papers, partly because Wim Hof’s own website has kindly collated a collection of them (with links and summaries!) onto one page:
Further reading: The Science Behind The Wim Hof Method
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