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
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Considering taking Wegovy to lose weight? Here are the risks and benefits – and how it differs from Ozempic
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The weight-loss drug Wegovy is now available in Australia.
Wegovy is administered as a once-weekly injection and is approved specifically for weight management. It’s intended to be used in combination with a reduced-energy diet and increased physical activity.
So how does Wegovy work and how much weight can you expect to lose while taking it? And what are the potential risks – and costs – for those who use it?
Let’s look at what the science says.
Halfpoint/Shutterstock What is Wegovy?
Wegovy is a brand name for the medication semaglutide. Semaglutide is a glucagon-like peptide-1 receptor agonist (GLP-1RA). This means it makes your body’s own glucagon-like peptide-1 hormone, called GLP-1 for short, work better.
Normally when you eat, the body releases the GLP-1 hormone which helps signal to your brain that you are full. Semaglutides enhance this effect, leading to a feeling of fullness, even when you haven’t eaten.
Another role of GLP-1 is to stimulate the body to produce more insulin, a hormone which helps lower the level of glucose (sugar) in the blood. That’s why semaglutides have been used for several years to treat type 2 diabetes.
Wegovy is self-injected once a week. S Becker/Shutterstock How does Wegovy differ from Ozempic?
Like Wegovy, Ozempic is a semaglutide. The way Wegovy and Ozempic work in the body are essentially the same. They’re made by the same pharmaceutical company, Novo Nordisk.
But there are two differences:
1) They are approved for two different (but related) reasons.
In Australia (and the United States), Ozempic is approved for use to improve blood glucose levels in adults with type 2 diabetes. By managing blood glucose levels effectively, the medication aims to reduce the risk of major complications, such as heart disease.
Wegovy is approved for use alongside diet and exercise for people with a body mass index (BMI) of 30 or greater, or 27 or greater but with other conditions such as high blood pressure.
Wegovy can also be used in people aged 12 years and older. Like Ozempic, Wegovy aims to reduce the risk of future health complications, including heart disease.
2) They are both injected but come in different strengths.
Ozempic is available in pre-loaded single-dose pens with varying dosages of 0.25 mg, 0.5 mg, 1 mg, or 2 mg per injection. The dose can be slowly increased, up to a maximum of 2 mg per week, if needed.
Wegovy is available in prefilled single-dose pens with doses of 0.25 mg, 0.5 mg, 1 mg, 1.7 mg, or 2.4 mg. The treatment starts with a dose of 0.25 mg once weekly for four weeks, after which the dose is gradually increased until reaching a maintenance dose of 2.4 mg weekly.
While it’s unknown what the impact of Wegovy’s introduction will be on Ozempic’s availability, Ozempic is still anticipated to be in low supply for the remainder of 2024.
Is Wegovy effective for weight loss?
Given Wegovy is a semaglutide, there is very strong evidence it can help people lose weight and maintain this weight loss.
A recent study found that over four years, participants taking Wevovy as indicated experienced an average weight loss of 10.2% body weight and a reduction in waist circumference of 7.7cm.
For those who stop taking the medication, analyses have shown that about two-thirds of weight lost is regained.
Wegovy can help people lose weight and maintain their weight loss – while they take the drug. Mladen Mitrinovic/Shutterstock What are the side effects of Wegovy?
The most common side effects are nausea and vomiting.
However, other serious side effects are also possible because of the whole-of-body impact of the medication. Thyroid tumours and cancer have been detected as a risk in animal studies, yet are rarely seen in human scientific literature.
In the four-year Wegovy trial, 16.6% of participants who received Wegovy (1,461 people) experienced an adverse event that led to them permanently discontinuing their use of the medication. This was higher than the 8.2% of participants (718 people) who received the placebo (with no active ingredient).
Side effects included gastrointestinal disorders (including nausea and vomiting), which affected 10% of people who used Wegovy compared to 2% of people who used the placebo.
Gallbladder-related disorders occurred in 2.8% of people who used Wegovy, and 2.3% of people who received the placebo.
Recently, concerns about suicidal thoughts and behaviours have been raised, after a global analysis reviewed more than 36 million reports of adverse events from semaglutide (Ozempic or Wegovy) since 2000.
There were 107 reports of suicidal thoughts and self-harm among people taking semaglutide, sadly including six actual deaths. When people stopped the medication, 62.5% found the thoughts went away. What we don’t know is whether dose, weight loss, or previous mental health status or use of antidepressants had a role to play.
Finally, concerns are growing about the negative effect of semaglutides on our social and emotional connection with food. Anecdotal and scientific evidence suggests people who use semaglutides significantly reduce their daily dietary intake (as anticipated) by skipping meals and avoiding social occasions – not very enjoyable for people and their loved ones.
How can people access Wegovy?
Wegovy is available for purchase at pharmacists with a prescription from a doctor.
But there is a hefty price tag. Wegovy is not currently subsidised through the Pharmaceutical Benefits Scheme, leaving patients to cover the cost. The current cost is estimated at around A$460 per month dose.
If you’re considering Wegovy, make an appointment with your doctor for individual advice.
Lauren Ball, Professor of Community Health and Wellbeing, The University of Queensland and Emily Burch, Accredited Practising Dietitian and Lecturer, Southern Cross University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Here’s how to help protect your family from norovirus
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What you need to know
- Norovirus is a very contagious infection that causes vomiting and diarrhea.
- The best way to help protect against norovirus is to wash your hands often with soap and warm water, since hand sanitizer may not be effective at killing the virus.
- If someone in your household has symptoms of norovirus, isolate them away from others, watch for signs of dehydration, and take steps to help prevent it from spreading.
If you feel like everyone is sick right now, you’re not alone. Levels of respiratory illnesses like COVID-19, flu, and RSV remain remain high in many states, and the U.S. is also battling a wave of norovirus, one of several viruses that cause a very contagious infection of the stomach and intestines.
Although norovirus infections are more common during the colder months—it’s also called the “winter vomiting disease”—the virus can spread at any time. Right now, however, cases have more than doubled since last year’s peak.
Read on to learn about the symptoms of norovirus, how it spreads, and what to do if someone in your household gets sick.
What are the symptoms of norovirus?
Norovirus is a very contagious infection that causes vomiting and diarrhea, which typically begins 12 to 48 hours after exposure to the virus. Additional symptoms may include stomach pain, body aches, headaches, and a fever. Norovirus typically resolves within three days, but people who are infected may still be contagious for up to two days after symptoms resolve.
Norovirus may cause dehydration, or a dangerous loss of fluids, especially in young children and older adults. See a health care provider if you or someone in your household shows signs of dehydration, which may include decreased urination, dizziness, a dry mouth and throat, sleepiness, and crying without tears.
How can you help protect against norovirus?
You can get norovirus if you have close contact with someone who is infected, touch a contaminated surface and then touch your mouth or nose, or consume contaminated food or beverages.
The best way to help protect yourself and others against norovirus is to wash your hands often with soap and warm water, since hand sanitizer may not be effective at killing the virus. Other ways to help protect yourself may include cooking food thoroughly and washing fruits and vegetables before eating them.
You can get sick with norovirus even if you’ve had it before, since there are many different strains.
How can families help protect against the spread of norovirus at home?
If someone in your household has symptoms of norovirus, isolate them away from others and watch for signs of dehydration. If you are sick with norovirus, do not prepare food for others in your household and use a separate bathroom, if possible.
When cleaning up after someone who has norovirus, wear rubber, latex, or nitrile gloves. Then wash your hands thoroughly.
Clean surfaces using a solution containing five to 25 tablespoons of bleach (that’s 12.5 fluid ounces, or just over ¾ cup), per gallon of water. Leave the bleach-water mix on surfaces for at least five minutes before wiping it off.
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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The Mental Health Dangers Of Oversharing
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Oversharers can be fun and amiable; the life of the party. In and of itself, this something that can be considered “pro-social” and thus healthy.
But the problem for one’s mental health in the long-run lies in the “over” part of oversharing. Sometimes, if not checking in with the other person’s comfort, oversharing can be “trauma-dumping”, and push people away. Alternatively, if the oversharing exposes an unmet need, it can make the other person feel obliged to try to help in some fashion, which in the long run may also cause awkwardness and withdrawal.
Some potential problems are purely internal, such the feelings of shame or anxiety that can come afterwards; “I should not have been so vulnerable”, “What if my friends think badly of me now?”, etc.
And of course, sometimes those fears are then validated by reality, if “friends” indeed take advantage of that, or withdraw their friendship. That’s a minority occurrence, but it doesn’t make it any less of a crushing thing if it happens.
Sometimes people overshare because of being a bad judge of what’s a socially-approved appropriate amount of sharing; sometimes people overshare out of a need for closeness, and perhaps the hope of hearing what one needed to hear previously.
The dangers of oversharing don’t mean that we should never speak about our experiences and feelings; in fact sometimes, it is the most healthy thing to do—be it because it’s something that needs communicating to a specific person, or because it’s something we just need to “get off our chest”.
In short, it can be good to share! It can also be good to do so judiciously, by conscious decision and not in response to a spur-of-the-moment impulse, and remember to prioritize our own safety.
Below, Alain de Botton explains more of the psychodynamics of this:
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10almonds tip, not included in the video: unsure whether your urge to share is too impulsive or not? Write a letter/email, and wait until the next day to decide whether or not to send it.
Want to read more?
Check out:
Breathe; Don’t Vent (At Least In The Moment)
Take care!
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Can Saturated Fats Be Healthy?
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Saturated Fat: What’s The Truth?
We asked you for your health-related opinion of saturated fat, and got the above-pictured, below-described, set of results.
- Most recorded votes were for “Saturated fat is good, but only some sources, and/or in moderation”
- This is an easy one to vote for, because of the “and/or in moderation” part, which tends to be a “safe bet” for most things.
- Next most popular was “Saturated fat is terrible for the health and should be avoided”
- About half as many recorded votes were for “I’m not actually sure what makes saturated fat different”, which is a very laudable option to click. Admitting when we don’t know things (and none of us know everything) is a very good first step to learning about them!
- Fewest recorded votes were for “Saturated fat is the best source of energy; we should get plenty”.
So, what does the science say?
First, a bit of physics, chemistry, and biology
You may be wondering what, exactly, saturated fats are “saturated” with. That’s a fair question, so…
All fats have a molecular structure made up of carbon, hydrogen, and oxygen atoms. Saturated fats are saturated with hydrogen, and thus have only single bonds between carbon atoms (unsaturated fats have at least one double-bond between carbon atoms).
The observable effect this has on them, is that fats that are saturated with hydrogen are solid at room temperature, whereas unsaturated fats are liquid at room temperature. Their different properties also make for different interactions inside the human body, including how likely or not they are to (for example) clog arteries.
See also: Could fat in your bloodstream cause blood clots?
Saturated fat is the best source of energy; we should get plenty: True or False?
False, in any reasonable interpretation, anyway. That is to say, if your idea of “plenty” is under 13g (e.g: two tablespoons of butter, and no saturated fat from other sources, e.g. meat) per day, then yes, by all means feel free to eat plenty. More than that, though, and you might want to consider trimming it down a bit.
The American Heart Association has this to say:
❝When you hear about the latest “diet of the day” or a new or odd-sounding theory about food, consider the source.
The American Heart Association recommends limiting saturated fats, which are found in butter, cheese, red meat and other animal-based foods, and tropical oils.
Decades of sound science has proven it can raise your “bad” cholesterol and put you at higher risk for heart disease.❞
Source: The American Heart Association Diet and Lifestyle Recommendations on Saturated Fat
The British Heart Foundation has a similar statement:
❝Despite what you read in the media, our advice is clear: replace saturated fats with unsaturated fats and avoid trans fats. Saturated fat is the kind of fat found in butter, lard, ghee, fatty meats and cheese. This is linked to an increased risk of heart and circulatory disease❞
Source: British Heart Foundation: What does fat do and what is saturated fat?
As for the World Health Organization:
❝1. WHO strongly recommends that adults and children reduce saturated fatty acid intake to 10% of total energy intake
2. WHO suggests further reducing saturated fatty acid intake to less than 10% of total energy intake
3. WHO strongly recommends replacing saturated fatty acids in the diet with polyunsaturated fatty acids; monounsaturated fatty acids from plant sources; or carbohydrates from foods containing naturally occurring dietary fibre, such as whole grains, vegetables, fruits and pulses.❞
Source: Saturated fatty acid and trans-fatty acid intake for adults and children: WHO guideline
Please note, organizations such as the AHA, the BHF, and the WHO are not trying to sell us anything, and just would like us to not die of heart disease, the world’s #1 killer.
As for “the best source of energy”…
We evolved to eat (much like our nearest primate cousins) a diet consisting mostly of fruits and other edible plants, with a small supplementary amount of animal-source protein and fats.
That’s not to say that because we evolved that way we have to eat that way—we are versatile omnivores. But for example, we are certainly not complete carnivores, and would quickly sicken and die if we tried to live on only meat and animal fat (we need more fiber, more carbohydrates, and many micronutrients that we usually get from plants)
The closest that humans tend to come to doing such is the ketogenic diet, which focuses on a high fat, low carbohydrate imbalance, to promote ketosis, in which the body burns fat for energy.
The ketogenic diet does work, and/but can cause a lot of health problems if a lot of care is not taken to avoid them.
See for example: 7 Keto Risks To Keep In Mind
Saturated fat is terrible for the health and should be avoided: True or False?
False, if we are talking about “completely”.
Firstly, it’s practically impossible to cut out all saturated fats, given that most dietary sources of fat are a mix of saturated, unsaturated (mono- and poly-), and trans fats (which are by far the worst, but beyond the scope of today’s main feature).
Secondly, a lot of research has been conducted and found insignificant or inconclusive results, in cases where saturated fat intake was already within acceptable levels (per the recommendations we mentioned earlier), and then cut down further.
Rather than fill up the newsletter with individual studies of this kind here’s a high-quality research review, looking at 19 meta-analyses, each of those meta-analyses having looked at many studies:
Dietary saturated fat and heart disease: a narrative review
Saturated fat is good, but only some sources, and/or in moderation: True or False?
True! The moderation part is easy to guess, so let’s take a look at the “but only some sources”.
We were not able to find any convincing science to argue for health-based reasons to favor plant- or animal-sourced saturated fat. However…
Not all saturated fats are created equal (there are many kinds), and also many of the foods containing them have additional nutrients, or harmful compounds, that make a big difference to overall health, when compared gram-for-gram in terms of containing the same amount of saturated fat.
For example:
- Palm oil’s saturated fat contains a disproportionate amount of palmitic acid, which raises LDL (“bad” cholesterol) without affecting HDL (“good” cholesterol), thus having an overall heart-harmful effect.
- Most animal fats contain a disproportionate amount of stearic acid, which has statistically insignificant effects on LDL and HDL levels, and thus is broadly considered “heart neutral” (in moderation!)
- Coconut oil’s saturated fat contains a disproportionate amount of lauric acid, which raises total cholesterol, but mostly HDL without affecting LDL, thus having an overall heart-beneficial effect (in moderation!)
Do you know what’s in the food you eat?
Test your knowledge with the BHF’s saturated fat quiz!
Enjoy!
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- Most recorded votes were for “Saturated fat is good, but only some sources, and/or in moderation”
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Unlock Your Menopause Type – by Dr. Heather Hirsch
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We featured Dr. Hirsch before, here, and mentioned this book which, at the time, we had not yet reviewed. So, here it is:
What sets this apart from a lot of menopause books is that there’s a lot less “eat these foods and your body will magically stop exhibiting symptoms of menopause” and a lot more clinical observations and then evidence-based recommendations.
Which is not to say don’t eat broccoli and almonds; by all means, they’re great foods and contain valuable nutrients that will help. But it is to say that if your doctor’s prescription is just broccoli and almonds, maybe have those as a snack while you’re looking for a second opinion.
Dr. Hirsch goes through various “menopause types”, but it’s not so much “astrology for gynecologists” and more “here are clusters of menopause symptoms set against timeline of presentation, and they can be categorized into six main ways that between them, cover pretty much all my patients, which have been many”.
So if you, dear reader, are menopausal (including peri- or post-), then the chances are very good that you will see yourself in one of those six sets.
She then goes about how to prioritize relief and safety, and personalize a treatment plan, and maintain the best menopausal care for you, going forward.
The style is easy-reading pop-science, punctuated by clinical science and 35 pages of references. She’s also, unlike a lot of authors in the genre, manifestly not invested in being a celebrity or making a personality cult out of her recommendations; she’s happy to stick to the science and put out good advice.
Bottom line: if you or someone you love is menopausal (including peri- or post-), this is a top-tier book.
Click here to check out Unlock Your Menopause Type, and get the best care for you!
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The Forgotten Exercise That Could Save Your Health After 50
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A lot depends on this:
Your heart is also a “use it or lose it” muscle
It’s well-known that muscles in general require maintenance (by regular exertion thereof), or they will atrophy and weaken. However, this is not only true of our skeletal muscles (the ones people think about when they say “muscles”), but also muscles like the heart.
Now, of course, we are all using our heart all the time, every day. One might be tempted to think it’ll be fine. It won’t; the body will not maintain anything beyond necessity. Thus, the prescription here is to regularly get our heart out of “zone 1”, its regular resting rate, which is usually about 50% or so of its maximum rate, and into “zone 2”, in which it beats at 60–70% of its maximum rate.
To find your maximum rate: as a general rule of thumb, 220 minus your age will usually give a fairly accurate estimate, unless you are unusually fit or unusually unfit.
Alternatively, if you have a fitness tracker, it can probably give you a number based on actual observation of your heartrate.
The benefits of doing so, as mentioned in this video:
- Improves heart health, circulation, and lowers blood pressure.
- Burns belly fat by using stored fat as energy*
- Boosts aerobic capacity, making daily activities easier.
- Enhances insulin sensitivity, mental health, and sleep.
- Helps manage arthritis, osteoporosis, and high cholesterol.
*note that this won’t happen in zone 1, and if you spend more than a little time in zone 3, it will happen but your body will do a metabolic slump afterwards to compensate, while doing its best to replenish the fat reserves. So, zone 2 is really the goal for this one, unless you want to do HIIT, which is beyond the scope of today’s article.
He recommends activities like brisk walking, cycling, or swimming. You don’t have to become a triathlon competitor if you don’t want to, but just pick what you like and do it at a fair pace. If it’s the brisk walking or cycling*, then (unless it’s very hot/humid where you are), if you break a sweat, you probably broke out of zone 2 and into zone 3. Which is fine, but wasn’t what you were aiming for, so it’s a sign you can go a little easier than that if you want.
*of course the same statement is also true of swimming, but you’ll not notice sweating in a pool 😉
As for how much and how often, averaging 20 minutes per day is good; if you want to condense that into 40 minutes 2–3 times per week, that’s fine too.
For more on all of this, enjoy:
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Want to learn more?
You might also like to read:
The Doctor Who Wants Us To Exercise Less & Move More
Take care!
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