Pasteurization: What It Does And Doesn’t Do
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Pasteurization’s Effect On Risks & Nutrients
In Wednesday’s newsletter, we asked you for your health-related opinions of raw (cow’s) milk, and got the above-depicted, below-described, set of responses:
- About 47% said “raw milk is dangerous to consume, whereas pasteurization makes it safer”
- About 31% said “raw milk is a good source of vital nutrients which pasteurization would destroy”
- About 14% said “both raw milk and pasteurized milk are equally unhealthy”
- About 9% said “both raw milk and pasteurized milk are equally healthy”
Quite polarizing! So, what does the science say?
“Raw milk is dangerous to consume, whereas pasteurization makes it safer: True or False?”
True! Coincidentally, the 47% who voted for this are mirrored by the 47% of the general US population in a similar poll, deciding between the options of whether raw milk is less safe to drink (47%), just as safe to drink (15%), safer to drink (9%), or not sure (30%):
Public Fails to Appreciate Risk of Consuming Raw Milk, Survey Finds
As for what those risks are, by the way, unpasteurized dairy products are estimated to cause 840x more illness and 45x more hospitalizations than pasteurized products.
This is because unpasteurized milk can (and often does) contain E. coli, Listeria, Salmonella, Cryptosporidium, and other such unpleasantries, which pasteurization kills.
Source for both of the above claims:
(we know the title sounds vague, but all this information is easily visible in the abstract, specifically, the first two paragraphs)
Raw milk is a good source of vital nutrients which pasteurization would destroy: True or False?
False! Whether it’s a “good” source can be debated depending on other factors (e.g., if we considered milk’s inflammatory qualities against its positive nutritional content), but it’s undeniably a rich source. However, pasteurization doesn’t destroy or damage those nutrients.
Incidentally, in the same survey we linked up top, 16% of the general US public believed that pasteurization destroys nutrients, while 41% were not sure (and 43% knew that it doesn’t).
Note: for our confidence here, we are skipping over studies published by, for example, dairy farming lobbies and so forth. Those do agree, by the way, but nevertheless we like sources to be as unbiased as possible. The FDA, which is not completely unbiased, has produced a good list of references for this, about half of which we would consider biased, and half unbiased; the clue is generally in the journal names. For example, Food Chemistry and the Journal of Food Science and Journal of Nutrition are probably less biased than the International Dairy Association and the Journal of Dairy Science:
FDA | Raw Milk Misconceptions and the Danger of Raw Milk Consumption
this page covers a lot of other myths too, more than we have room to “bust” here, but it’s very interesting reading and we recommend to check it out!
Notably, we also weren’t able to find any refutation by counterexample on PubMed, with the very slight exception that some studies sometimes found that in the case of milks that were of low quality, pasteurization can reduce the vitamin E content while increasing the vitamin A content. For most milks however, no significant change was found, and in all cases we looked at, B-vitamins were comparable and vitamin D, popularly touted as a benefit of cow’s milk, is actually added later in any case. And, importantly, because this is a common argument, no change in lipid profiles appears to be findable either.
In science, when something has been well-studied and there aren’t clear refutations by counterexample, and the weight of evidence is clearly very much tipped into one camp, that usually means that camp has it right.
Milk generally is good/bad for the health: True or False?
True or False, depending on what we want to look at. It’s definitely not good for inflammation, but the whole it seems to be cancer-neutral and only increases heart disease risk very slightly:
- Keep Inflammation At Bay ← short version is milk is bad, fermented milk products are fine in moderation
- Is Dairy Scary? ← short version is that milk is neither good nor terrible; fermented dairy products however are health-positive in numerous ways when consumed in moderation
You may be wondering…
…how this goes for the safety of dairy products when it comes to the bird flu currently affecting dairy cows, so:
Take care!
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The GLP-1 Lifestyle – by Dr. Joshua Hackett
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While GLP-1 receptor agonists (i.e. semaglutide drugs such as Ozempic and Wegovy) have enjoyed the spotlight as a miracle cure (with some drawbacks), this book argues very reasonably that we should see them as a tool that we can use (or not) as part of a holistic approach to manage our metabolism.
Unusually, Dr. Hackett doesn’t argue strongly for one way or another, when it comes to using GLP-1 RAs. Rather, he makes the case that they indeed have pros and cons, and we should not only be aware of those pros and cons before making a decision either way, but also, we must understand the process of what goes on.
In contrast to the “inject it and forget it” marketing, he explains how if we actually understand what’s happening in our metabolism, we can improve things for ourselves and, at the very least, avoid sabotaging ourselves. Again, this knowledge is applicable with or without the drugs.
Much of the book is spent covering the physiological underpinnings and how things work for people of various different sizes and metabolic rates, as well as everything you’d expect about dosing, side effects, and whatnot—as well as things you might not have considered closely related, such gut health, and the question of “is there any way to retain the slimmer figure after stopping?”.
The style is methodical and clear, and not at all sensationalized. It’s very much a “read it cover to cover” book rather than a “dip in” book, so be ready for that, though.
Bottom line: if you and/or a loved one are on GLP1-RAs—or on the fence about them—this is a very even-minded and helpfully explanatory book.
Click here to check out The GLP-1 Lifestyle, and transform your metabolism!
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5 Ways To Reverse Years Of Joint Damage
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Will Harlow, over-50s specialist physio, explains:
Mobilization drills
Little and often is what’s best, and the following exercises come highly recommended:
- Seated ankle mobilization: push your knee over your toes while your heel stays down (improves stiff ankles and stretches calves), 15 reps per side, 3 times daily.
- Hip mobility sweep: from all fours, move one leg out to the side, then extend it straight backwards before returning (activates glutes and hip rotators), 10–15 reps per side, twice daily.
- Door slide: standing in a doorway with your forearm against the wall, slide your arm upwards to stretch your chest and shoulder (helps posture and shoulder mobility), 5 reps per side, 2–3 times daily.
- Thoracic extension on foam roller: lying with a roller across your mid-back, extend your spine backwards while keeping your butt down (improves posture and reduces shoulder, back, and neck pain), 10 reps, morning and afternoon.
- Bottle stretch: lying on your back with a light bottle in hand, slowly rotate your arm backwards to stretch your shoulder (helps restore mobility and reduce stiffness), 10 reps per side, morning and evening.
For more on each of these plus visual demonstrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like:
How To Rebuild Your Cartilage ← a trickier, but also perfectly possible, endeavor
Take care!
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How Tight Are Your Hips? Test (And Fix!) With This
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Upon surveying over half a million people; hips were the most common area for stiffness and lack of mobility. So, what to do about it?
This test don’t lie
With 17 muscles contributing to hip function (“hip flexors” being the name for this group of 17 muscles, not specific muscle), it’s important to figure out which ones are tight, and if indeed it really is the hip flexors at all, or if it could be, as it often is, actually the tensor fasciae latae (TFL) muscle of the thigh. If it turns out to be both, well, that’s unfortunate but the good news is, now you’ll know and can start fixing from all the necessary angles.
Diagnostic test for tight hip flexors (Thomas Test):
- Use a sturdy, elevated surface (e.g. table or counter—not a bed or couch, unless there is perchance room to swing your legs without them touching the floor).
- Sit at the edge, lie back, and pull both knees to your chest.
- Return one leg back down until the thigh is perpendicular to the table.
- Let the other leg dangle off the edge to assess flexibility.
Observations from the test:
- Thigh contact: is the back of your thigh touching the table?
- Knee angle: is your knee bent at roughly 80° or straighter?
- Thigh rotation: does the thigh roll outward?
Interpreting results:
- If your thigh contacts the surface and the knee is bent at around 80°, hip mobility is good.
- If your thigh doesn’t touch or knee is too straight, hip flexor tightness is present.
- If your thigh rolls outwards from your midline, that indicates tightness in the TFL muscle of the thigh.
Three best hip flexor stretches:
- Kneeling lunge stretch:
- Hips above the knee, tuck tailbone, engage glutes, press hips forward, reach arm up with a slight side bend.
- Seated hip lift stretch:
- Sit with feet hip-width apart, hands behind shoulders, lift hips, step one foot back, tuck tailbone, point knee away.
- Sofa stretch:
- Kneel with one shin against a couch/wall, other foot forward in lunge, tuck tailbone, press hips forward, lift torso.
It’s recommended to how each stretch for 30 seconds on each side.
For more on all of the above, and visual demonstrations, 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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Practical Optimism – by Dr. Sue Varma
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We’ve written before about how to get your brain onto a more positive track (without toxic positivity), but there’s a lot more to be said than we can fit into an article, so here’s a whole book packed full with usable advice.
The subtitle claims “the art, science, and practice of…”, but mostly it’s the science of. If there’s art to be found here, then this reviewer missed it, and as for the practice of, well, that’s down to the reader, of course.
However, it is easy to use the contents of this book to translate science into practice without difficulty.
If you’re a fan of acronyms, initialisms, and other mnemonics (such as the rhyming “Name, Claim, Tame, and Reframe”), then you’ll love this book as they come thick and fast throughout, and they contribute to the overall ease of application of the ideas within.
The writing style is conversational but with enough clinical content that one never forgets who is speaking—not in the egotistical way that some authors do, but rather, just, she has a lot of professional experience to share and it shows.
Bottom line: if you’d like to be more optimistic without delving into the delusional, this book can really help a lot with that (in measurable ways, no less!).
Click here to check out Practical Optimism, and brighten up your life!
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5 Ways To Beat Afternoon Energy Slumps
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This is Nisha Vora, of Rainbow Plant Life fame. After graduating from Harvard Law School, she realized she hated being a lawyer, and pivoted completely to become what she now is 12 years later, a chef and health coach.
Here are her tips for boosting energy through the day:
Caffeine timing
If you don’t do caffeine at all, no need to change that, but if you do, Vora advises that midday is the best time for it, with a very good rationale:
- of course it should not be too late in the day, because the elimination half-life of caffeine (4–8 hours to eliminate just half of the caffeine, depending on genes, call it 6 hours as an average though honestly for most people it will either be 4 or 8, not 6) is such that it can easily interfere with sleep for most people
- because caffeine is an adenosine blocker, not an adenosine inhibitor, taking caffeine in the morning means either there’s no adenosine to block, or it’ll just “save” that adenosine for later, i.e. when the caffeine is eliminated, then the adenosine will kick in, meaning that your morning sleepiness has now been deferred to the afternoon, rather than eliminated.
Another reminder that caffeine is the “payday loan” of energy. So, midday it is. No morning sleepiness to defer, and yet also not so late as to interfere with sleep.
See also: Calculate (And Enjoy) The Perfect Night’s Sleep
Simplify what can be simplified
This one’s not from a physiological basis, but rather, that a lot of the time most of us have much of our energy being taken by constant task-switching (what gets called multitasking, but as our brain is a single processor, it really means switching rapidly between different kinds of cognition, which is not efficient). In order to avoid that energy drain, try to streamline things and make a particular effort to not only single-task, but to do so without distractions.
Counterpoint: if you have unmedicated ADHD, then chances are you’ll do better with a single small distraction chosen by you, than trying to go without distractions, because your brain will find distractions anyway, so you might as well choose one (for many people it is background music, or a podcast or TV show that one doesn’t may attention to but it’s there) as a matter of harm reduction, and that way you’ll do better at focusing on your primary task than if your brain were reaching out for every and any possible distraction.
Manage your blood sugars
In particular, she advocates for avoiding sugary breakfasts, opting instead for protein, fat, and fiber-rich options. For more in this regard, see:
10 Ways To Balance Your Blood Sugars
Walk after meals
You don’t have to don hiking boots and “I am just going outside and may be some time“; rather, even a 2–5 minute walk after a meal helps regulate digestion and glucose levels, avoiding postprandial energy slumps.
So,
- if you have a treadmill, after eating is a great time to use it for a few minutes
- if you have stairs, now’s a great time to go up and down them a few times
One last technique for when everything else fails
We’ll quote her directly on this one:
❝Despite my best efforts, soemtimes I just have one of those days. Maybe I didn’t sleep well or I’m distracted by my never ending thoughts. If I need to be productive or energized on those days, I will do something that I absolutely hate:
I will take a cold shower.
And I hate it because I’m already always cold all the time, so why would I want to get a cold shower?
Well, it’s because cold water immersion has been shown to dramatically boost your dopamine levels, which gives you more energy and motivation.
In the moment though, it’s mostly painful and I hate everything and everyone around me.
But I know that if I can suffer through two minutes of a cold shower, I will feel so refreshed.❞
There are more benefits than just that, though, see:
A Cold Shower A Day Keeps The Doctor Away?
Want more from Nisha Vora?
We reviewed one of her books a while back:
The Vegan Instant Pot Cookbook – by Nisha Vora
Enjoy!
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Speedy Easy Ratatouille
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One of the biggest contributing factors to unhealthy eating? The convenience factor. To eat well, it seems, one must have at least two of the following: money, time, and skill. So today we have a health dish that’s cheap, quick, and easy!
(You won’t need a rat in a hat to help you with this one)
You will need
- 3 ripe tomatoes, roughly chopped
- 2 zucchini, halved and chopped into thick batons
- 2 portobello mushrooms, sliced into ½” slices
- 1 large red pepper, cut into thick chunks
- 3 tbsp extra virgin olive oil
- 2 tbsp finely chopped parsley
- 2 tsp garlic paste
- 2 tsp thyme leaves, destalked
- 1 tsp rosemary leaves, destalked
- 1 tsp red chili flakes
- 1 tsp black pepper
- Optional: 1 tsp MSG, or 1 tsp low sodium salt (the MSG is the healthier option as it contains less sodium than even low sodium salt)
- Optional: other vegetables, chopped. Use what’s in your fridge! This is a great way to use up leftovers. Particularly good options include chopped eggplant, chopped red onion, and/or chopped carrot.
Method
(we suggest you read everything at least once before doing anything)
1) Put the olive oil into a sauté pan and set the heat on medium. When hot but smoking, add the mushrooms and any optional vegetables (but not the others from the list yet), and fry for 5 minutes.
Note: if you aren’t pressed for time, then you can diverge from the “speedy” part of this by cooking each of the vegetables separately before combining, which allows each to keep its flavor more distinct.
2) Add the garlic, followed by the zucchini, red pepper, chili flakes, and thyme; stir periodically (you shouldn’t have to stir constantly) for 10 minutes.
3) Add the tomatoes and a cup of water to the pan, along with any MSG/salt. Cover with the lid and allow to simmer for a further 10 minutes.
4) Serve, adding the garnish.
Enjoy!
Want to learn more?
For those interested in some of the science of what we have going on today:
- Level-Up Your Fiber Intake! (Without Difficulty Or Discomfort)
- The Magic Of Mushrooms: “The Longevity Vitamin” (That’s Not A Vitamin)
- Our Top 5 Spices: How Much Is Enough For Benefits? ← we had 3/5 today!
- Monosodium Glutamate: Sinless Flavor-Enhancer Or Terrible Health Risk?
- MSG vs Salt: Sodium Comparison
Take care!
Don’t Forget…
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