The Roundup

Roundup

Here is The Roundup, Edition 25, bringing you the best from around the web from the past two weeks!

Blast from the Past

Lactase persistence is a common genetic trait in many worldwide populations that allows them to consume dairy as a significant and health-promoting component of their traditional diets. An ancient DNA analysis has revealed a high frequency of European lactase persistence earlier than previously believed, reaching over 70% of the population by the year 1200 AD. The ability to rely on dairy products as a source of nutrition likely conveyed a selective advantage during times of resource scarcity, and the lactase persistence gene has independently evolved at least five times in European, Middle Eastern, and African populations.

Since humans have been consuming dairy from goats, cows and other ruminants for over 10,000 years, it’s not surprising that genetic selection for lactase persistence was favored in regions that dairy farming was an important component of food production. I’ve argued before that for those who tolerate it, full fat, organic, and even raw dairy can be a wonderful health food. And if you’re one of those people who have some trouble with the lactose in milk, I’ve written an article on how to cure lactose intolerance, which has received positive feedback from many readers who tested the protocol themselves.

While dairy isn’t a required component of a healthy diet, many folks find it worth it to include it in their diets for a variety of reasons – so it’s helpful to know how to maximize your ability to digest dairy products if you’re interested in enjoying them on a regular basis.

Research Report

  • Older adults who take blood pressure drugs have a greater risk of serious falls, a new study reports.
  • A study finds lactose intolerance to be common in Hashimoto’s patients, and lactose restriction leads to improvement.
  • Sunlight is believed to reduce the chances of developing MS, and new research suggests this may be independent of vitamin D production by protecting against brain and spinal cord inflammation.
  • Green tea contains the amino acid L-Theanine, which is associated with a reduction in anxiety and also weakens the rise in blood pressure in high-stress-response adults.

Worth A Look

  • Laura Schoenfeld shares her thoughts on the recent “is it Paleo” debates.
  • In case you’re wondering whether Lyme exists in California—it does.
  • Mark Sisson explores existing science about the benefits of massage.
  • Richard at Free the Animal reports on study showing gut bacteria produce enzyme that processes phytic acid into nutrients body needs.
  • Research confirms that internet trolls are narcissists, psychopaths and sadists. Why am I not surprised?
  • Some new—and somewhat conflicting—research on the benefits of high-intensity interval training.

For the Foodies

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Comments Join the Conversation

  1. says

    Thank you so much for including my crockpot chipotle chicken in your roundup! I’m really interested in using your method to help with my dairy intolerance.

  2. Missy says

    While your phrase “Lactase persistence is a common genetic trait in many worldwide populations” is technically correct, it is also misleading.

    Lactase persistence is _uncommon_.

    The _majority_ of people around the world remain lactase non-persistent.

    Care to comment on why you tilted the story this way?

    What does this bias say about who you perceive your audience to be and how little responsibility you feel towards other people?

    • Karin says

      Missy,

      I have to respectfully disagree with your comment. Lactase persistence is indeed a common genetic trait.

      The word common refers to something that occurs often. It does not in any way imply that it occurs in the majority of cases.

      Below is an example:
      http://ghr.nlm.nih.gov/condition/cystic-fibrosis

      “Cystic fibrosis is a common genetic disease within the Caucasian (white) population in the United States. The disease occurs in 1 in 2,500 to 3,500 Caucasian newborns.”

      If Chris does have certain perceptions about the composition of his audience, this example certainly doesn’t demonstrate that. I don’t see how it suggests anything about his responsibility to anyone. He is not assuring anyone in particular that he/she is lactose tolerant/intolerant.

      • Karin says

        On the other hand, the models used to advertise different features on this site overwhelmingly appear in upper-middle class environments, and are almost always young, thin, and Caucasian. In my opinion, this does suggest a lack of awareness of the fact that people seeking guidance in areas of holistic health come in all classes, ages, races, and sizes.

  3. Karin says

    Why are you linking to a misogynistic moron?

    I wouldn’t normally be so crass, but you’re linking to a site that is crass, and it’s hard to find a more appropriate description of that person.

  4. Kristi says

    This is the reference for an study that purports protein from animal sources is as deadly as smoking cigarettes. Chris, will you comment on this please? (Morgan E. Levine, Jorge A. Suarez, Sebastian Brandhorst, Priya Balasubramanian, Chia-Wei Cheng, Federica Madia, Luigi Fontana, Mario G. Mirisola, Jaime Guevara-Aguirre, Junxiang Wan, Giuseppe Passarino, Brian K. Kennedy, Min Wei, Pinchas Cohen, Eileen M. Crimmins, Valter D. Longo. Low Protein Intake Is Associated with a Major Reduction in IGF-1, Cancer, and Overall Mortality in the 65 and Younger but Not Older Population. Cell Metabolism, 2014; 19 (3): 407-417 DOI: 10.1016/j.cmet.2014.02.006)

  5. prioris says

    How many people are truly intolerant to “milk”

    There is pasteurized milk. There is raw milk.

    Many people who couldn’t tolerate pasteurized milk were able to drink raw milk. Too bad raw milk is so hard and expensive to get.

  6. Ev says

    10.000 years of natural selection? – really? that fast? – how about millions of years that so called theory of evolution suggests? – and another interesting thing is that “research” claims lactase became part a certain group’s DNA earlier that was thought – how about if it happened even earlier? – will it mean lactase was part of a population from the start (whatever start means) ? and how about COWS? – I thought they were domesticated animals – if animals were domesticated to give milk 24/7 (which is pretty amazing achievement for cave men – to turn wild cow to milk producing factory – how did they do it? :) ) – humans had to be consuming milk much earlier than first cow was bred — I think Paleo movement will do itself a great favor if it stops mentioning ideas about true nature of human beings and so called theory of evolution – which by the way has no one solid piece of physical evidence to date — also it would be great if in the list of the references – links to the solid research on the theory of evolution would be included each time it is mentioned – Thank you

    • prioris says

      The official history is a gigantic lie. Real history of humans goes back millions of years. Earth has gone through many near extinctions. There were advanced civilizations on earth prior to this. Atlantic symbolizes the last technologically advanced civilization before now.

      Pasteurized milk is less health. Raw milk is healthy. Many lactose intolerant people are able to drink raw milk.

      • Ev says

        it is! – if Paleo gurus think mentioning Darwin makes Paleo movement sound more scientific it is other way around – they set themselves and whole movement for being discredited – as soon as enough people will figure out that the theory is huge scam — still curious how cave men managed to turn “paleo cow” to milk factory? – and what must happen first – cow milk or lactase? – anyway all and all 10000 years doesn’t fit “the evolution theory” tome frames either way!

        • Karin says

          Ev,

          What do you mean by your reference to “the evolution theory” time frame? We were still evolving 10,000 years ago, and we are still evolving today.

          Earliest milk from non-human animals was likely quickly fermented in the hot sun, allowing people to drink it before the lactase persistence mutation arose.

        • prioris says

          This is why people before pasteurization had fewer problems with milk. Pasteurization was introduced to destroy people’s health.

          ————————-
          One probiotic found only in unpasteurized, fresh milk from free-range cows, Lactococcus lactis, became Wisconsin’s state microbe after legislators hailed its unique features which enable the development of cheddar, Colby and Monterey Jack cheese. In fact, when making these cheeses from pasteurized milk, the live bacterium must be added back into the mix to curdle the milk and produce the whey. [3]

          As with natural L. lactis, even a genetically reengineered form of it has been shown to break down lactose, allowing those who are lactose intolerant to drink raw milk without ill effects. [4]
          ———————-

  7. Ev says

    @Karlin – do you think 10000 years is sufficient time to allow human beings to acquire ability to produce certain enzymes? – wouldn’t you assume that based on “the theory” it should take hundred thousand years longer (at least) with milk being consistent part of a diet? – if you hunt and gather you can’t have anything consistently being part of your diet – and if humans did use milk for food – then they had an ability to digest milk and gain nutritional benefits from it long before than 10000 years – humans were around plants for million of years and had much more exposure to them than any (animal) milk – how come we don’t produce phytase to break down phytic acid for us? – how come “evolution” is so picky? —- by the way regarding we still evolve – I’m not sure it is true – we more mutate that evolve and those mutations very often untracable – most of the time scientists can’t find the link that explain that mutation – they happen in spikes – almost instantly — and take a look at human beings as social being and intellectual beings – if you think we are more advanced than our ancestors – you are quite wrong – and in fact Paleo movement underlying idea that they knew better (and more) —- and if Paleo movement keep saying on one hand that our ancestors knew it better and at the same time have “the theory” as scientific base to make it look more serious and protect itself from hard hitting mainstream media and big farma and industrial farming machine it actually opens up itself to very serious question – just like the one I asked —- that’s what II meant and mean

    • prioris says

      Genetic engineering has been around for hundreds of thousands of years. The shells for spiritual life forms can be created with all sorts of selective genetic characteristics. Genetics works hand and hand with the environment. The environment can effect which genes get expressed. Human ancestors were more advanced humans than we are today.

  8. Ev says

    @prioris – that’s the point – so trying to understand humans our advantages and our weaknesses through only physical manifestation of our DNA and through bad advised linear model of our advancement through time is not going to be too fruitful and will eventually fall apart – that’s why it’ll be only wise for Paleo people to look beyond food and phisical health traditions of our ancsestors and try to re-learn traditions in their entirety – as they are suppose to be practiced – or at least understood – with their spiritual component – and the knowledge of our ancestors were given must be taken as seriously as they food preparation methods they used – we can’t say they knew how to prepare food properly but they were stupid to know why they did it —– hope this take on the article helps! – Thank you

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