A Planet of Viruses – by Carl Zimmer
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We’ve reviewed numerous books on the immune system before, and this one’s mostly not about that.
Instead, this one focuses on the viruses themselves, and the part they play in our world, for good and for ill. Popular awareness tends to focus on the ill, of course.
But, there’s a lot that viruses do for us too, including:
- Weak/harmless viruses that keep our immune systems on their toes and ready
- Bacteriophage viruses that kill and consume pathogens that, left unchecked, would do the same to us
- Endogenous retroviruses that have become symbiotic with the human organism, without which our species would quickly go extinct
He also talks about biological warfare, and how we cannot bury our heads in the sand by avoiding research on those grounds, because someone will always do it anyway, so (as the motto of the immune system itself might say), best to be prepared.
The author is a science journalist, by the way, and has no PhD, but does have a flock of Fellowships and assorted scientific awards and honors, so he appears to be doing good work so far as the scientific community is concerned.
Bottom line: if you’d like to know more about viruses than “they’re very small and can cause harm”, then this book will open a whole new world.
Click here to check out A Planet of Viruses, and upgrade your knowledge!
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Using the”Task Zero” approach
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“Jonathan Frakes Asks You Things” Voice:
- Do you ever find yourself in a room and wonder what you’re doing there?
- Or set about a to-do list, but get quickly distracted by side-quests?
- Finally get through to a person in a call center, they ask how they can help, and your mind goes blank?
- Go to the supermarket and come out with six things, none of which were the one you came for?
This is a “working memory” thing and you’re not alone. There’s a trick that can help keep you on track more often than not:
Don’t try to overburden your working memory. It is very limited (this goes for everyone to a greater or lesser degree). Instead, hold only two tasks at once:
- Task zero (what you are doing right now)
- Task one (your next task)
When you’ve completed task zero, task one becomes the new task zero, and you can populate a new task one from your to-do list.
This way, you will always know what you’re doing right now, and what you’re doing next, and your focus will be so intent on task zero, that you will not get sidetracked by task seventeen!
Happy focusing
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HRT: Bioidentical vs Animal
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HRT: A Tale Of Two Approaches
In yesterday’s newsletter, we asked you for your assessment of menopausal hormone replacement therapy (HRT).
- A little over a third said “It can be medically beneficial, but has some minor drawbacks”
- A little under a third said “It helps, but at the cost of increased cancer risk; not worth it”
- Almost as many said “It’s a wondrous cure-all that makes you happier, healthier, and smell nice too”
- Four said “It is a dangerous scam and a sham; “au naturel” is the way to go”
So what does the science say?
Which HRT?
One subscriber who voted for “It’s a wondrous cure-all that makes you healthier, happier, and smell nice too” wrote to add:
❝My answer is based on biodentical hormone replacement therapy. Your survey did not specify.❞
And that’s an important distinction! We did indeed mean bioidentical HRT, because, being completely honest here, this European writer had no idea that Premarin etc were still in such wide circulation in the US.
So to quickly clear up any confusion:
- Bioidentical hormones: these are (as the name suggests) identical on a molecular level to the kind produced by humans.
- Conjugated Equine Estrogens: such as Premarin, come from animals. Indeed, the name “Premarin” comes from “pregnant mare urine”, the substance used to make it.
There are also hormone analogs, such as medroxyprogesterone acetate, which is a progestin and not the same thing as progesterone. Hormone analogs such as the aforementioned MPA are again, a predominantly-American thing—though they did test it first in third-world countries, after testing it on animals and finding it gave them various kinds of cancer (breast, cervical, ovarian, uterine).
A quick jumping-off point if you’re interested in that:
Depot medroxyprogesterone acetate and the risk of breast and gynecologic cancer
this is about its use as a contraceptive (so, much lower doses needed), but it is the same thing sometimes given in the US as part of menopausal HRT. You will note that the date on that research is 1996; DMPA is not exactly cutting-edge and was first widely used in the 1950s.
Similarly, CEEs (like Premarin) have been used since the 1930s, while estradiol (bioidentical estrogen) has been in use since the 1970s.
In short: we recommend being wary of those older kinds and mostly won’t be talking about them here.
Bioidentical hormones are safer: True or False?
True! This is an open-and-shut case:
❝Physiological data and clinical outcomes demonstrate that bioidentical hormones are associated with lower risks, including the risk of breast cancer and cardiovascular disease, and are more efficacious than their synthetic and animal-derived counterparts.
Until evidence is found to the contrary, bioidentical hormones remain the preferred method of HRT. ❞
Further research since that review has further backed up its findings.
Source: Are Bioidentical Hormones Safer or More Efficacious than Other Commonly Used Versions in HRT?
So simply, if you’re going on HRT (estrogen and/or progesterone), you might want to check it’s the bioidentical kind.
HRT can increase the risk of breast cancer: True or False?
Contingently True, but for most people, there is no significant increase in risk.
First: again, we’re talking bioidentical hormones, and in this case, estradiol. Older animal-derived attempts had much higher risks with much lesser efficaciousness.
There have been so many studies on this (alas, none that have been publicised enough to undo the bad PR in the wake of old-fashioned HRT from before the 70s), but here’s a systematic review that highlights some very important things:
❝Estradiol-only therapy carries no risk for breast cancer, while the breast cancer risk varies according to the type of progestogen.
Estradiol therapy combined with medroxyprogesterone, norethisterone and levonorgestrel related to an increased risk of breast cancer, estradiol therapy combined with dydrogesterone and progesterone carries no risk❞
In fewer words:
- Estradiol by itself: no increased risk of breast cancer
- Estradiol with MDPA or other progestogens that aren’t really progesterone: increased risk of breast cancer
- Estradiol with actual progesterone: back to no increased risk of breast cancer
So again, you might want to make sure you are getting actual bioidentical hormones, and not something else!
However! If you are aware that you already have an increased risk of breast cancer (e.g. family history, you’ve had it before, you know you have certain genes for it, etc), then you should certainly discuss that with your doctor, because your personal circumstances may be different:
❝Tailored HRT may be used without strong evidence of a deleterious effect after ovarian cancer, endometrial cancer, most other gynecological cancers, bowel cancer, melanoma, a family history of breast cancer, benign breast disease, in carriers of BRACA mutations, after breast cancer if adjuvant therapy is not being used, past thromboembolism, varicose veins, fibroids and past endometriosis.
Relative contraindications are existing cardiovascular and cerebrovascular disease and breast cancer being treated with adjuvant therapies❞
Source: HRT in difficult circumstances: are there any absolute contraindications?
HRT makes you happier, healthier, and smell nice too: True or False?
Contingently True, assuming you do want its effects, which generally means the restoration of much of the youthful vitality you enjoyed pre-menopause.
The “and smell nice too” was partly rhetorical, but also partly literal: our scent is largely informed by our hormones, and higher estrogen results in a sweeter scent; lower estrogen results in a more bitter scent. Not generally considered an important health matter, but it’s a thing, so hey.
More often, people take menopausal HRT for more energy, stronger bones (reduced osteoporosis risk), healthier heart (reduced CVD risk), improved sexual health, better mood, healthier skin and hair, and general avoidance of menopause symptoms:
Read more: Skin, hair and beyond: the impact of menopause
We’d need another whole main feature to discuss all the benefits properly; today we’re just mythbusting.
HRT does have some drawbacks: True or False?
True, and/but how serious they are (beyond the aforementioned consideration in the case of an already-increased risk of breast cancer) is a matter of opinion.
For example, it is common to get a reprise of monthly cramps and/or mood swings, depending on how one is taking the HRT and other factors (e.g. your own personal physiology and genetic predispositions). For most people, these will even out over time.
It’s also even common to get a reprise of (much slighter than before) monthly bleeding, unless you have for example had a hysterectomy (no uterus = no bleeding). Again, this will usually settle down in a matter of months.
If you experience anything more alarming than that, then indeed check with your doctor.
HRT is a dangerous scam and sham: True or False?
False, simply. As described above, for most people they’re quite safe. Again, talking bioidentical hormones.
The other kind are in the most neutral sense a sham (i.e. they are literally sham hormones), though they’re not without their merits and for many people they may be better than nothing.
As for being a scam, biodentical hormones are widely prescribed in the many countries that have universal healthcare and/or a single-payer healthcare system, where there would be no profit motive (and considerable cost) in doing so.
They’re prescribed because they are effective and thus reduce healthcare spending in other areas (such as treating osteoporosis or CVD after the fact) and improve Health Related Quality of Life, and by extension, health-adjusted life-years, which is one of the top-used metrics for such systems.
See for example:
Our apologies, gentlemen
We wanted to also talk about testosterone therapy for the andropause, but we’ve run out of room today (because of covering the important distinction of bioidentical vs old-fashioned HRT)!
To make it up to you, we’ll do a full main feature on it (it’s an interesting topic) in the near future, so watch this space
Ladies, we’ll also at some point cover the pros and cons of different means of administration, e.g. pills, transdermal gel, injections, patches, pessaries, etc—which often have big differences.
That’ll be in a while though, because we try to vary our topics, so we can’t talk about menopausal HRT all the time, fascinating and important a topic it is.
Meanwhile… take care, all!
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Savory Protein Crêpe
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Pancakes have a bad reputation healthwise, but they don’t have to be so. Here’s a very healthy crêpe recipe, with around 20g of protein per serving (which is about how much protein most people’s body’s can use at one sitting) and a healthy dose of fiber too:
You will need
Per crêpe:
- ½ cup milk (your preference what kind; we recommend oat milk for this)
- 2 oz chickpea flour (also called garbanzo bean flour, or gram flour)
- 1 tsp nutritional yeast
- 1 tsp ras el-hanout (optional but tasty and contains an array of beneficial phytochemicals)
- 1 tsp dried mixed herbs
- ⅛ tsp MSG or ¼ tsp low-sodium salt
For the filling (also per crêpe):
- 6 cherry tomatoes, halved
- Small handful baby spinach
- Extra virgin olive oil
Method
(we suggest you read everything at least once before doing anything)
1) Mix the dry crêpe ingredients in a bowl, and then stir in the milk, whisking to mix thoroughly. Leave to stand for at least 5 minutes.
2) Meanwhile, heat a little olive oil in a skillet, add the tomatoes and fry for 1 minute, before adding the spinach, stirring, and turning off the heat. As soon as the spinach begins to wilt, set it aside.
3) Heat a little olive oil either in the same skillet (having been carefully wiped clean) or a crêpe pan if you have one, and pour in a little of the batter you made, tipping the pan so that it coats the pan evenly and thinly. Once the top is set, jiggle the pan to see that it’s not stuck, and then flip your crêpe to finish on the other side.
If you’re not confident of your pancake-tossing skills, or your pan isn’t good enough quality to permit this, you can slide it out onto a heatproof chopping board, and use that to carefully turn it back into the pan to finish the other side.
4) Add the filling to one half of the crêpe, and fold it over, pushing down at the edges with a spatula to make a seal, cooking for another 30 seconds or so. Alternatively, you can just serve a stack of crêpes and add the filling at the table, folding or rolling per personal preference:
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)
- Three Daily Servings of Beans?
- Lycopene’s Benefits For The Gut, Heart, Brain, & More
- Our Top 5 Spices: How Much Is Enough For Benefits?
- Sea Salt vs MSG – Which is Healthier?
Take care!
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The Immune System Recovery Plan – by Dr. Susan Blum
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.
The subtitle of the book is “A Doctor’s 4-Step Program to Treat Autoimmune Disease”, so we’ll not keep the four steps a secret; they are:
- Using food as medicine
- Understanding the stress connection
- Healing your gut and digestive system
- Optimizing liver function
Each of these sections gives a primer in the relevant science, worksheets for personalizing your own plan to your own situation, condition, and goals, and of course lots of practical advice.
This is important and perhaps the book’s greatest strength, since there are dozens of possible autoimmune conditions, and getting a professional diagnosis is often a long, arduous process. So while this book can’t necessarily speed that up, what it can do is give you a good head-start on managing your symptoms based on things that are most likely to help, and certainly, there will be no harm trying.
While it’s not primarily a recipe book, there are also recipes targeting each part of the whole, as well as an extensive herb and supplement guide, before getting into lots of additional resources.
Bottom line: if you are, or suspect you are, suffering from an autoimmune condition, the information in this book can make your life a lot easier.
Click here to check out The Immune System Recovery Plan, and help yours to help you!
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The Anti-Stress Herb That Also Fights Cancer
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What does Rhodiola rosea actually do, anyway?
Rhodiola rosea (henceforth, “rhodiola”) is a flowering herb whose roots have adaptogenic properties.
In the cold, mountainous regions of Europe and Asia where it grows, it has been used in herbal medicine for centuries to alleviate anxiety, fatigue, and depression.
What does the science say?
Well, let’s just say the science is more advanced than the traditional use:
❝In addition to its multiplex stress-protective activity, Rhodiola rosea extracts have recently demonstrated its anti-aging, anti-inflammation, immunostimulating, DNA repair and anti-cancer effects in different model systems❞
Nor is how it works a mystery, as the same paper explains:
❝Molecular mechanisms of Rhodiola rosea extracts’s action have been studied mainly along with one of its bioactive compounds, salidroside. Both Rhodiola rosea extracts and salidroside have contrasting molecular mechanisms on cancer and normal physiological functions.
For cancer, Rhodiola rosea extracts and salidroside inhibit the mTOR pathway and reduce angiogenesis through down-regulation of the expression of HIF-1α/HIF-2α.
For normal physiological functions, Rhodiola rosea extracts and salidroside activate the mTOR pathway, stimulate paracrine function and promote neovascularization by inhibiting PHD3 and stabilizing HIF-1α proteins in skeletal muscles❞
~ Ibid.
And, as for the question of “do the supplements work?”,
❝In contrast to many natural compounds, salidroside is water-soluble and highly bioavailable via oral administration❞
~ Ibid.
And as to how good it is:
❝Rhodiola rosea extracts and salidroside can impose cellular and systemic benefits similar to the effect of positive lifestyle interventions to normal physiological functions and for anti-cancer❞
~ Ibid.
Source: Rhodiola rosea: anti-stress, anti-aging, and immunostimulating properties for cancer chemoprevention
But that’s not all…
We can’t claim this as a research review if we only cite one paper (even if that paper has 144 citations of its own), and besides, it didn’t cover all the benefits yet!
Let’s first look at the science for the “traditional use” trio of benefits:
When you read those, what are your first thoughts?
Please don’t just take our word for things! Reading even just the abstracts (summaries) at the top of papers is a very good habit to get into, if you don’t have time (or easy access) to read the full text.
Reading the abstracts is also a very good way to know whether to take the time to read the whole paper, or whether it’s better to skip onto a different one.
- Perhaps you noticed that the paper we cited for anxiety was quite a small study.
- The fact is, while we found mountains of evidence for rhodiola’s anxiolytic (antianxiety) effects, they were all small and/or animal studies. So we picked a human study and went with it as illustrative.
- Perhaps you noticed that the paper we cited for fatigue pertained mostly to stress-related fatigue.
- This, we think, is a feature not a bug. After all, most of us experience fatigue because of the general everything of life, not because we just ran a literal marathon.
- Perhaps you noticed that the paper we cited for depression said it didn’t work as well as sertraline (a very common pharmaceutical SSRI antidepressant).
- But, it worked almost as well and it had far fewer adverse effects reported. Bear in mind, the side effects of antidepressants are the reason many people avoid them, or desist in taking them. So rhodiola working almost as well as sertraline for far fewer adverse effects, is quite a big deal!
Bonus features
Rhodiola also putatively offers protection against Alzheimer’s disease, Parkinson’s disease, and cerebrovascular disease in general:
Rosenroot (Rhodiola): Potential Applications in Aging-related Diseases
It may also be useful in the management of diabetes (types 1 and 2), but studies so far have only been animal studies, and/or in vitro studies. Here are two examples:
- Antihyperglycemic action of rhodiola-aqeous extract in type 1 diabetic rats
- Evaluation of Rhodiola crenulata and Rhodiola rosea for management of type 2 diabetes and hypertension
How much to take?
Dosages have varied a lot in studies. However, 120mg/day seems to cover most bases. It also depends on which of rhodiola’s 140 active compounds a particular benefit depends on, though salidroside and rosavin are the top performers.
Where to get it?
As ever, we don’t sell it (or anything else) but here’s an example product on Amazon.
Enjoy!
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- Perhaps you noticed that the paper we cited for anxiety was quite a small study.
Is It Dementia?
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Spot The Signs (Because None Of Us Are Immune)
Dementia affects increasingly many people, and unlike a lot of diseases, it disproportionately affects people in wealthy industrialized nations.
There are two main reasons for this:
- Longevity (in poorer countries, more people die of other things sooner; can’t get age-related cognitive decline if you don’t age)
- Lifestyle (in the age of convenience, it has never been easier to live an unhealthy lifestyle)
The former is obviously no bad thing for those of us lucky enough to be in wealthier countries (though even in such places, good healthcare access is of course sadly not a given for all).
The latter, however, is less systemic and more epidemic. But it does cut both ways:
- An unhealthy lifestyle is much easier here, yes
- A healthier lifestyle is much easier here, too!
This then comes down to two factors in turn:
- Information: knowing about dementia, what things lead to it, what to look out for, what to do
- Motivation: priorities, and how much attention we choose to give this matter
So, let’s get some information, and then give it our attention!
More than just memory
It’s easy to focus on memory loss, but the four key disabilities directly caused by dementia (each person may not get all four), can be remembered by the mnemonic: “AAAA!”
No, somebody didn’t just murder your writer. It’s:
- Amnesia: memory loss, in one or more of its many forms
- e.g. short term memory loss, and/or inability to make new memories
- Aphasia: loss of ability to express oneself, and/or understand what is expressed
- e.g. “More people have been to Berlin than I have”
- Or even less communication-friendly, Broca’s (Expressive) Aphasia and Wernicke’s (Receptive) Aphasia
- Apraxia: loss of ability to do things, through no obvious physical disability
- e.g. staring at the bathroom mirror wondering how to brush one’s teeth
- Agnosia: loss of ability to recognize things
- e.g. prosopagnosia, also called face-blindness.
If any of those seem worryingly familiar, be aware that while yes, it could be a red flag, what’s most important is patterns of these things.
Another difference between having a momentary brainlapse and having dementia might be, for example, the difference between forgetting your keys, and forgetting what keys do or how to use one.
That said, some are neurological deficits that may show up quite unrelated to dementia, including most of those given as examples above. So if you have just one, then that’s probably worthy of note, but probably not dementia.
Writer’s anecdote: I have had prosopagnosia all my life. To give an example of what that is like and how it’s rather more than just “bad with faces”…
Recently I saw my neighbor, and I could tell something was wrong with her face, but I couldn’t put my finger on what it was. Then some moments later, I realized I had mistaken her hat for her face. It was a large beanie with a panda design on it, and that was facelike enough for me to find myself looking at the wrong face.
Subjective memory matters as much as objective
Objective memory tests are great indicators of potential cognitive decline (or improvement!), but even a subjective idea of having memory problems, that one’s memory is “not as good as it used to be”, can be an important indicator too:
Subjective memory may be marker for cognitive decline
And more recently:
If your memory feels like it’s not what it once was, it could point to a future dementia risk
If you’d like an objective test of memory and other cognitive impairments, here’s the industry’s gold standard test (it’s free):
SAGE: A Test to Detect Signs of Alzheimer’s and Dementia
(The Self-Administered Gerocognitive Exam (SAGE) is designed to detect early signs of cognitive, memory or thinking impairments)
There are things that can look like dementia that aren’t
A person with dementia may be unable to recognize their partner, but hey, this writer knows that feeling very well too. So what sets things apart?
More than we have room for today, but here’s a good overview:
What are the early signs of dementia, and how does it differ from normal aging?
Want to read more?
You might like our previous article more specifically about reducing Alzheimer’s risk:
Reducing Alzheimer’s Risk Early!
Take care!
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