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:

Characteristics of U.S. Consumers Reporting Past Year Intake of Raw (Unpasteurized) Milk: Results from the 2016 Food Safety Survey and 2019 Food Safety and Nutrition Survey

(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:

Cows’ Milk, Bird Flu, & You

Take care!

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  • Try This At Home: ABI Test For Clogged Arteries

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    Arterial plaque is a big deal, and statistically it’s more of a risk as we get older, often coming to a head around age 72 for women and 65 for men—these are the median ages at which people who are going to get heart attacks, get them. Or get it, because sometimes one is all it takes.

    The Ankle-Brachial Index Test

    Dr. Brewer recommends a home test for detecting arterial plaque called the Ankle-Brachial Index (ABI), which uses a blood pressure monitor. The test involves measuring blood pressure in both the arms and ankles, then calculating the ratio of these measurements:

    • A healthy ABI score is between 1.0 and 1.4; anything outside this range may indicate arterial problems.
    • Low ABI scores (below 0.8) suggest plaque is likely obstructing blood flow
    • High ABI scores (above 1.4) may indicate artery hardening

    Peripheral Artery Disease (PAD), associated with poor ABI results (be they high or low), can cause a whole lot of problems that are definitely better tackled sooner rather than later—remember that atherosclerosis is a self-worsening thing once it gets going, because narrower walls means it’s even easier for more stuff to get stuck in there (and thus, the new stuff that got stuck also becomes part of the walls, and the problem gets worse).

    If you need a blood pressure monitor, by the way, here’s an example product on Amazon.

    Do note also that yes, if you have plaque obstructing blood flow and hardened arteries, your scores may cancel out and give you a “healthy” score, despite your arteries being very much not healthy. For this reason, this test can be used to raise the alarm, but not to give the “all clear”.

    For more on all of the above, plus a demonstration and more in-depth explanation of the test, enjoy:

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  • Who will look after us in our final years? A pay rise alone won’t solve aged-care workforce shortages

    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.

    Aged-care workers will receive a significant pay increase after the Fair Work Commission ruled they deserved substantial wage rises of up to 28%. The federal government has committed to the increases, but is yet to announce when they will start.

    But while wage rises for aged-care workers are welcome, this measure alone will not fix all workforce problems in the sector. The number of people over 80 is expected to triple over the next 40 years, driving an increase in the number of aged care workers needed.

    How did we get here?

    The Royal Commission into Aged Care Quality and Safety, which delivered its final report in March 2021, identified a litany of tragic failures in the regulation and delivery of aged care.

    The former Liberal government was dragged reluctantly to accept that a total revamp of the aged-care system was needed. But its weak response left the heavy lifting to the incoming Labor government.

    The current government’s response started well, with a significant injection of funding and a promising regulatory response. But it too has failed to pursue a visionary response to the problems identified by the Royal Commission.

    Action was needed on four fronts:

    • ensuring enough staff to provide care
    • building a functioning regulatory system to encourage good care and weed out bad providers
    • designing and introducing a fair payment system to distribute funds to providers and
    • implementing a financing system to pay for it all and achieve intergenerational equity.

    A government taskforce which proposed a timid response to the fourth challenge – an equitable financing system – was released at the start of last week.

    Consultation closed on a very poorly designed new regulatory regime the week before.

    But the big news came at end of the week when the Fair Work Commission handed down a further determination on what aged-care workers should be paid, confirming and going beyond a previous interim determination.

    What did the Fair Work Commission find?

    Essentially, the commission determined that work in industries with a high proportion of women workers has been traditionally undervalued in wage-setting. This had consequences for both care workers in the aged-care industry (nurses and Certificate III-qualified personal-care workers) and indirect care workers (cleaners, food services assistants).

    Aged-care staff will now get significant pay increases – 18–28% increase for personal care workers employed under the Aged Care Award, inclusive of the increase awarded in the interim decision.

    Older person holding a stabilising bar
    The commission determined aged care work was undervalued.
    Shutterstock/Toa55

    Indirect care workers were awarded a general increase of 3%. Laundry hands, cleaners and food services assistants will receive a further 3.96% on the grounds they “interact with residents significantly more regularly than other indirect care employees”.

    The final increases for registered and enrolled nurses will be determined in the next few months.

    How has the sector responded?

    There has been no push-back from employer groups or conservative politicians. This suggests the uplift is accepted as fair by all concerned.

    The interim increases of up to 15% probably facilitated this acceptance, with the recognition of the community that care workers should be paid more than fast food workers.

    There was no criticism from aged-care providers either. This is probably because they are facing difficulty in recruiting staff at current wage rates. And because government payments to providers reflect the actual cost of aged care, increased payments will automatically flow to providers.

    When the increases will flow has yet to be determined. The government is due to give its recommendations for staging implementation by mid-April.

    Is the workforce problem fixed?

    An increase in wages is necessary, but alone is not sufficient to solve workforce shortages.

    The health- and social-care workforce is predicted to grow faster than any other sector over the next decade. The “care economy” will grow from around 8% to around 15% of GDP over the next 40 years.

    This means a greater proportion of school-leavers will need to be attracted to the aged-care sector. Aged care will also need to attract and retrain workers displaced from industries in decline and attract suitably skilled migrants and refugees with appropriate language skills.

    Nursing students practise their skills
    Aged care will need to attract workers from other sectors.
    nastya_ph/Shutterstock

    The caps on university and college enrolments imposed by the previous government, coupled with weak student demand for places in key professions (such as nursing), has meant workforce shortages will continue for a few more years, despite the allure of increased wages.

    A significant increase in intakes into university and vocational education college courses preparing students for health and social care is still required. Better pay will help to increase student demand, but funding to expand place numbers will ensure there are enough qualified staff for the aged-care system of the future. The Conversation

    Stephen Duckett, Honorary Enterprise Professor, School of Population and Global Health, and Department of General Practice and Primary Care, The University of Melbourne

    This article is republished from The Conversation under a Creative Commons license. Read the original article.

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  • Pomegranate vs Cherries – Which is Healthier?

    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.

    Our Verdict

    When comparing pomegranate to cherries, we picked the pomegranate.

    Why?

    In terms of macros, pomegranate is slightly higher in carbs, and/but 4x higher in fiber. That’s already a good start for pomegranates. Lest we be accused of cherry-picking, though, we’ll mention that pomegranate is also slightly higher in protein and fat, for what it’s worth—which is not a lot. As with most fruits, the protein and fat numbers are low importance next to the carb:fiber ratio.

    When it comes to vitamins, pomegranate has more of vitamins B1, B2, B5, B6, B9. E. K, and choline. On the other hand, cherries have more of vitamins A and B3. The two fruits are equal in vitamin C. This all makes for a clear win for pomegranate.

    In the category of minerals, pomegranate boasts more copper, magnesium, phosphorus, potassium, selenium, and zinc. In contrast, cherries have slightly more calcium. Another win for pomegranate.

    Both of these fruits have beneficial polyphenols, each with a slightly different profile, but neither pressingly better than the other.

    In short: as ever with healthy foods, enjoy both—diversity is good! But if you’re going to pick on, we recommend the pomegranate.

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    The gentlest exercise

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    Wood Chops

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    Front Kick with Opposite Arm Press

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    Wall Push-Ups

    Place your hands on the pool wall, shoulder-width apart. Keep feet together and hips slightly tucked for core engagement. Next, move your chest toward the wall and push back while maintaining a straight body—avoid arching your back. Do 10–20 reps.

    Arm Circles

    Stand with your feet wider than shoulder-width. Clasp your hands, extend your arms, and submerge them in the water. Make large circular motions for resistance training. This can be done with straight or bent arms for different difficulty levels. Do 10–20 circles in each direction.

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  • Exercising With Less Soreness!

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    An Ancient Sports Drink & Healing Potion, Now With Modern Science?

    Ginseng has many health benefits, we talked about 8 of them in this previous edition of 10almonds:

    Ginseng, Dopamine, & Exercise

    …but we’ve somehow never yet done a Monday’s Research Review for it! We must do one, one of these days. For now though, it’s Saturday’s Life Hacks, and we’re here with…

    Speeding up recovery after muscle damage

    We talked about this topic before too:

    Overdone It? How To Speed Up Recovery After Exercise

    …which gives very good advice (including some supplements that help), but was published before the latest science that we’re going to talk about today:

    A team of researchers all so very recently found that ginseng also reduces muscular fatigue and, importantly, hastens recovery of muscle damage caused by exercise.

    And that’s not all…

    ❝It should also be noted that, by reducing fatigue, taking ginseng on a regular basis may also help reduce the risk of injury, particularly in the case of muscles or ligaments, which can in turn improve athletic performance.❞

    This means that it can be taken regularly and prophylactically, as they found:

    ❝taking ginseng systematically for a long time can mitigate the response of the biological markers, mainly creatine kinase (CK) and interleukin 6 (IL-6), responsible for exercise-induced muscle damage and inflammation.❞

    You may be thinking “isn’t creatine good?” and yes, yes it is:

    Creatine: Very Different For Young & Old People

    …however, creatine kinase is not creatine. Creatine kinase (CK) is an enzyme that affects the creatine (to put it in few words, without getting into the fascinating biochemistry of this). Now, it’s necessary for us to have some CK (or else we wouldn’t be able to do what we need to with the creatine), but elevated levels often indicate some sort of problem going on:

    Approach to asymptomatic creatine kinase elevation

    …so ginseng keeping those things balanced is a good thing.

    The study

    We’ve talked a lot about the findings and what they mean, but if you’d like to read the paper for yourself, you can read it here:

    Effect of Ginseng Intake on Muscle Damage Induced by Exercise in Healthy Adults

    Where to get ginseng

    If you’d like to take ginseng as a supplement, then there are many ways to do so, with the most common being capsules or ginseng tea, which has an interesting and distinctive taste, and is very refreshing. Here are examples on Amazon, for your convenience:

    Enjoy!

    Don’t Forget…

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