How Too Much Salt May Lead To Organ Failure
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Salt’s Health Risks… More Than Just Heart Disease!
It’s been well-established for a long time that too much salt is bad for cardiovascular health. It can lead to high blood pressure, which in turn can lead to many problems, including heart attacks.
A team of researchers has found that in addition to this, it may be damaging your organs themselves.
This is because high salt levels peel away the surfaces of blood vessels. How does this harm your organs? Because it’s through those walls that nutrients are selectively passed to where they need to be—mostly your organs. So, too much salt can indirectly starve your organs of the nutrients they need to survive. And you absolutely do not want your organs to fail!
❝We’ve identified new biomarkers for diagnosing blood vessel damage, identifying patients at risk of heart attack and stroke, and developing new drug targets for therapy for a range of blood vessel diseases, including heart, kidney and lung diseases as well as dementia❞
~ Newman Sze, Canada Research Chair in Mechanisms of Health and Disease, and lead researcher on this study.
See the evidence for yourself: Endothelial Damage Arising From High Salt Hypertension Is Elucidated by Vascular Bed Systematic Profiling
Diets high in salt are a huge problem in Canada, North America as a whole, and around the world. According to a World Health Organization (WHO) report released March 9, Canadians consume 9.1 grams of salt per day.
Read: WHO global report on sodium intake reduction
You may be wondering: who is eating over 9g of salt per day?
And the answer is: mostly, people who don’t notice how much salt is already in processed foods… don’t see it, and don’t think about it.
Meanwhile, the WHO recommends the average person to consume no more than five grams, or one teaspoon, of salt per day.
Read more: Massive efforts needed to reduce salt intake and protect lives
The American Heart Association, tasked with improving public health with respect to the #1 killer of Americans (it’s also the #1 killer worldwide—but that’s not the AHA’s problem), goes further! It recommends no more than 2.3g per day, and ideally, no more than 1.5g per day.
Some handy rules-of-thumb
Here are sodium-related terms you may see on food packages:
- Salt/Sodium-Free = Less than 5mg of sodium per serving
- Very Low Sodium = 35mg or less per serving
- Low Sodium = 140mg or less per serving
- Reduced Sodium = At least 25% less sodium per serving than the usual sodium level
- Light in Sodium or Lightly Salted = At least 50% less sodium than the regular product
Confused by milligrams? Instead of remembering how many places to move the decimal point (and potentially getting an “out by an order of magnitude error—we’ve all been there!), think of the 1.5g total allowance as being 1500mg.
See also: How much sodium should I eat per day? ← from the American Heart Association
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Nutrivore – by Dr. Sarah Ballantyne
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The core idea of this book is that foods can be assigned a numerical value according to their total nutritional value, and that this number can be used to guide a person’s diet such that we will eat, in aggregate, a diet that is more nutritious. So far, so simple.
What Dr. Ballantyne also does, besides explaining and illustrating this system (there are chapters explaining the calculation system, and appendices with values), is also going over what to consider important and what we can let slide, and what things we might need more of to address a wide assortment of potential health concerns. And yes, this is definitely a “positive diet” approach, i.e. it focuses on what to add in, not what to cut out.
The premise of the “positive diet” approach is simple, by the way: if we get a full set of good nutrients, we will be satisfied and not crave unhealthy food.
She also offers a lot of helpful “rules of thumb”, and provides a variety of cheat-sheets and suchlike to make things as easy as possible.
There’s also a recipes section! Though, it’s not huge and it’s probably not necessary, but it’s just one more “she’s thinking of everything” element.
Bottom line: if you’d like a single-volume “Bible of” nutrition-made-easy, this is a very usable tome.
Click here to check out Nutrivore, and start filling up your diet!
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I have a stuffy nose, how can I tell if it’s hay fever, COVID or something else?
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Hay fever (also called allergic rhinitis) affects 24% of Australians. Symptoms include sneezing, a runny nose (which may feel blocked or stuffy) and itchy eyes. People can also experience an itchy nose, throat or ears.
But COVID is still spreading, and other viruses can cause cold-like symptoms. So how do you know which one you’ve got?
Lysenko Andrii/Shutterstock Remind me, how does hay fever cause symptoms?
Hay fever happens when a person has become “sensitised” to an allergen trigger. This means a person’s body is always primed to react to this trigger.
Triggers can include allergens in the air (such as pollen from trees, grasses and flowers), mould spores, animals or house dust mites which mostly live in people’s mattresses and bedding, and feed on shed skin.
When the body is exposed to the trigger, it produces IgE (immunoglobulin E) antibodies. These cause the release of many of the body’s own chemicals, including histamine, which result in hay fever symptoms.
People who have asthma may find their asthma symptoms (cough, wheeze, tight chest or trouble breathing) worsen when exposed to airborne allergens. Spring and sometimes into summer can be the worst time for people with grass, tree or flower allergies.
However, animal and house dust mite symptoms usually happen year-round.
Ryegrass pollen is a common culprit. bangku ceria/Shutterstock What else might be causing my symptoms?
Hay fever does not cause a fever, sore throat, muscle aches and pains, weakness, loss of taste or smell, nor does it cause you to cough up mucus.
These symptoms are likely to be caused by a virus, such as COVID, influenza, respiratory syncytial virus (RSV) or a “cold” (often caused by rhinoviruses). These conditions can occur all year round, with some overlap of symptoms:
Natasha Yates/The Conversation COVID still surrounds us. RSV and influenza rates appear higher than before the COVID pandemic, but it may be due to more testing.
So if you have a fever, sore throat, muscle aches/pains, weakness, fatigue, or are coughing up mucus, stay home and avoid mixing with others to limit transmission.
People with COVID symptoms can take a rapid antigen test (RAT), ideally when symptoms start, then isolate until symptoms disappear. One negative RAT alone can’t rule out COVID if symptoms are still present, so test again 24–48 hours after your initial test if symptoms persist.
You can now test yourself for COVID, RSV and influenza in a combined RAT. But again, a negative test doesn’t rule out the virus. If your symptoms continue, test again 24–48 hours after the previous test.
If it’s hay fever, how do I treat it?
Treatment involves blocking the body’s histamine release, by taking antihistamine medication which helps reduce the symptoms.
Doctors, nurse practitioners and pharmacists can develop a hay fever care plan. This may include using a nasal spray containing a topical corticosteroid to help reduce the swelling inside the nose, which causes stuffiness or blockage.
Nasal sprays need to delivered using correct technique and used over several weeks to work properly. Often these sprays can also help lessen the itchy eyes of hay fever.
Drying bed linen and pyjamas inside during spring can lessen symptoms, as can putting a smear of Vaseline in the nostrils when going outside. Pollen sticks to the Vaseline, and gently blowing your nose later removes it.
People with asthma should also have an asthma plan, created by their doctor or nurse practitioner, explaining how to adjust their asthma reliever and preventer medications in hay fever seasons or on allergen exposure.
People with asthma also need to be alert for thunderstorms, where pollens can burst into tinier particles, be inhaled deeper in the lungs and cause a severe asthma attack, and even death.
What if it’s COVID, RSV or the flu?
Australians aged 70 and over and others with underlying health conditions who test positive for COVID are eligible for antivirals to reduce their chance of severe illness.
Most other people with COVID, RSV and influenza will recover at home with rest, fluids and paracetamol to relieve symptoms. However some groups are at greater risk of serious illness and may require additional treatment or hospitalisation.
For RSV, this includes premature infants, babies 12 months and younger, children under two who have other medical conditions, adults over 75, people with heart and lung conditions, or health conditions that lessens the immune system response.
For influenza, people at higher risk of severe illness are pregnant women, Aboriginal people, people under five or over 65 years, or people with long-term medical conditions, such as kidney, heart, lung or liver disease, diabetes and decreased immunity.
If you’re concerned about severe symptoms of COVID, RSV or influenza, consult your doctor or call 000 in an emergency.
If your symptoms are mild but persist, and you’re not sure what’s causing them, book an appointment with your doctor or nurse practitioner. Although hay fever season is here, we need to avoid spreading other serious infectious.
For more information, you can call the healthdirect helpline on 1800 022 222 (known as NURSE-ON-CALL in Victoria); use the online Symptom Checker; or visit healthdirect.gov.au or the Australian Society of Clinical Immunology and Allergy.
Deryn Thompson, Eczema and Allergy Nurse; Lecturer, University of South Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Macadamias vs Hazelnuts – Which is Healthier?
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Our Verdict
When comparing macadamias to hazelnuts, we picked the hazelnuts.
Why?
In terms of macros first, hazelnuts have 2x the protein, and slightly more carbs and fiber. We call this a win for hazelnuts.
When it comes to vitamins, macadamias have more of vitamins B1, B2, and B3, while hazelnuts have more of vitamins A, B5, B6, B7, B9, C, and E. Notably, 28x more vitamin E, so that’s not inconsiderable. Also 10x the vitamin B9, and 5x the vitamin C, and the rest, more modest wins. In any case, clearly a strong win for hazelnuts here.
In the category of minerals, macadamias have more selenium, while hazelnuts have more calcium, copper, iron, magnesium, manganese, phosphorus, potassium, and zinc. Another clear win for hazelnuts.
In short, hazelnuts win in all categories. However, by all means enjoy either or both (unless you have a nut allergy, in which case, obviously don’t).
Want to learn more?
You might like to read:
Why You Should Diversify Your Nuts
Take care!
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The Energy Plan – by James Collins
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There’s a lot of conflicting advice out there about how we should maintain our energy levels, for example:
- Eat fewer carbs!
- Eat more carbs!
- Eat slow-release carbs!
- Eat quick-release carbs!
- Practise intermittent fasting!
- Graze constantly throughout the day!
- Forget carbs and focus on fats!
- Actually it’s all about B-vitamins!
…and so on.
What Collins does differently is something much less-often seen:
Here, we’re advised on how to tailor our meals to our actual lifestyle, taking into account the day we actually have each day. For example:
- What will our energy needs be for the day?
- Will our needs be intense, or long, or both, or neither?
- What kind of recovery have we had, or do we need, from previous activities?
- Do we need to replace lost muscle glycogen, or are we looking to trim the fat?
- Are we doing a power-up or just maintenance today?
Rather than bidding us have a five-way spreadsheet and do advanced mathematics for every meal, though, Collins has done the hard work for us. The book explains the various principles in a casual format with a light conversational tone, and gives us general rules to follow.
These rules cover what to do for different times of day… and also, at different points in our life (the metabolic needs of a 13-year-old, 33-year-old, and 83-year-old, are very different!). That latter’s particularly handy, as a lot of books assume an age bracket for the reader, and this one doesn’t.
In short: a great book for anyone who wants to keep their energy levels up (throughout life’s ups and downs in activity) without piling on the pounds or starving oneself.
Click here to check out The Energy Plan on Amazon and fuel your days better!
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Broccoli Sprouts & Sulforaphane
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It’s Q&A Day at 10almonds!
Have a question or a request? We love to hear from you!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small 😎
❝How much science is there behind sulforaphane / broccoli spirits and its health claims??❞
So, first of all, what it is: sulforaphane is a compound found in Brassica oleracea, of which species broccoli is a cultivar. It’s found in the other Brassica oleracea cultivars too (e.g. cauliflower, various cabbages, Brussels sprouts, kale, etc), but for whatever reason*, most research has been on broccoli and broccoli sprouts.
*Likely the reason is: research begets research—it’s easier to get funding to expand upon previous research, than it is to break ground on researching a different plant, where for the first third of your paper you have almost no existing scientific literature to cite. So once they got started on broccoli sprouts, everything else has been broccoli sprouts too.
And for clarity on what broccoli sprouts are: this means that when broccoli seeds have been germinated and just begun to sprout, they are harvested and eaten. That’s the one-line explanation, anyway; there’s a little more to it than that, so anyone interested should check out our previous main feature:
Good Things Come In Small Packages: Sprout Your Seeds, Grains, Beans, Etc
…and for more depth than we have room for in a one-page article, check out this book we reviewed:
The Sprout Book: Tap Into The Power Of The Planet’s Most Nutritious Food – by Doug Evans
One thing that the science is clear on: sprouts of a given plant indeed have much higher general nutritional density than their “adult” siblings. And in the case of sulforaphane specifically, it’s about 100x higher in broccoli sprouts than in adult broccoli:
Broccoli or Sulforaphane: Is It the Source or Dose That Matters? ← we suggest skipping down to the section “broccoli-based clinical trials”
So, that prompts the next question: do we care?
In other words: is sulforaphane really particularly important?
Sulforaphane vs cancer
The most well-evidenced health-giving property of sulforaphane is its anticancer activity:
Brassicaceae-Derived Anticancer Agents: Towards a Green Approach to Beat Cancer
A lot of the research there is epidemiological rather than RCTs, and where there are RCTs, they are mostly small ones, like this 10-person broccoli soup study about bioavailability (rather than the effects themselves):
Bioavailability of Glucoraphanin and Sulforaphane from High-Glucoraphanin Broccoli
To get into sulforaphane’s anticancer potential in seriousness, we have to look at a lot of in-vitro studies trialling it to limit carcinogenesis, or to shrink tumors with it, or specifically targetting cancer stem cells with it, which make for quite compelling reading:
A quick aside: if you’re reading that and thinking “Why is sonic the hedgehog in here?” it’s because after the observation of the influence of certain genes that influence cuticular denticles (the growth of spikes) on fruit fly larvae (bearing in mind the fruit fly Drosophila melanogaster is used for so much first- or second-line genetic research, being either the go-to or the go-to after the nematode C. elegans) caused the whole group of genes to get called “hedgehog genes” and then it became scientific convention to name each newly researched gene in that set after a different kind of hedgehog. One of them, instead of being named after a real-world hedgehog species like the others, got named after the videogame character.
Unfortunately, this now means that because the gene is associated with a certain congenital brain disorder, sometimes a doctor has to explain to a family that the reason their baby has a brain defect is because of a mutated sonic hedgehog.
Ok, back to talking about cancer. Let’s just quickly drop a few more papers so it’s clear that this is well-established:
- Multi-targeted prevention of cancer by sulforaphane ← this shows how it works on the cellular level
- Cruciferous vegetables: dietary phytochemicals for cancer prevention ← this shows how it works on the population level
However, that’s not the only established benefit:
❝SFN has other beneficial effects in addition to cancer protection. SFN exhibits neuroprotective effects and is implemented in treating conditions such as traumatic brain injury, Alzheimer’s disease and Parkinson’s disease.❞
Source: Sulforaphane in broccoli: The green chemoprevention!! Role in cancer prevention and therapy
Now, after the extract we quoted above, the rest of the section “other health benefits of sulforaphane” includes a lot of speculation, weak science, and/or things attributable to other phytochemicals in broccoli, including various polyphenols, vitamins, and minerals.
About those broccoli spirits
Ok, we know it was a typo, but… Actually, there is something worth mentioning here, and that’s that sulforaphane is only activated when glucoraphanin (its inactive form) comes into contact with myrosinase (an enzyme that’s only released when the plant is damaged).
In other words, it’s necessary to injure the broccoli before consuming it, in order to release the
spiritsmyrosinase. Now, while very few people are out there swallowing adult broccoli plants whole, it could well happen that people might wolf down uncut broccoli sprouts, since they are only small, after all.For this reason, it’s best that broccoli, even if it’s broccoli sprouts, be cut while raw before consumption.
In terms of cooking, heat in excess of 140℃ / 284℉ will destroy the glucoraphanin, and less/no glucoraphanin means less/no sulforaphane.
So, enjoying them raw or lightly steaming them seems to be best for this purpose:
Impact of thermal processing on sulforaphane yield from broccoli (Brassica oleracea L. ssp. italica)
Just want a supplement?
Many studies (including some cited by the research reviews we cited above) deal with sulforaphane in extract form, rather than whole plants, so there’s no shame in taking it that way if you’re not a fan of broccoli.
We don’t sell it, but here for your convenience is an example product on Amazon 😎
Enjoy!
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The Cold Truth About Respiratory Infections
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The Pathogens That Came In From The Cold
Yesterday, we asked you about your climate-themed policy for avoiding respiratory infections, and got the above-depicted, below-described, set of answers:
- About 46% of respondents said “Temperature has no bearing on infection risk”
- About 31% of respondents said “It’s important to get plenty of cold, fresh air, as this kills/inactivates pathogens”
- About 22% of respondents said “It’s important to stay warm to avoid getting colds, flu, etc”
Some gave rationales, including…
For “stay warm”:
❝Childhood lessons❞
For “get cold, fresh air”:
❝I just feel that it’s healthy to get fresh air daily. Whether it kills germs, I don’t know❞
For “temperature has no bearing”:
❝If climate issue affected respiratory infections, would people in the tropics suffer more than those in colder climates? Pollutants may affect respiratory infections, but I doubt just temperature would do so.❞
So, what does the science say?
It’s important to stay warm to avoid getting colds, flu, etc: True or False?
False, simply. Cold weather does increase the infection risk, but for reasons that a hat and scarf won’t protect you from. More on this later, but for now, let’s lay to rest the idea that bodily chilling will promote infection by cold, flu, etc.
In a small-ish but statistically significant study (n=180), it was found that…
❝There was no evidence that chilling caused any acute change in symptom scores❞
Read more: Acute cooling of the feet and the onset of common cold symptoms
Note: they do mention in their conclusion that chilling the feet “causes the onset of cold symptoms in about 10% of subjects who are chilled”, but the data does not support that conclusion, and the only clear indicator is that people who are more prone to colds generally, were more prone to getting a cold after a cold water footbath.
In other words, people who were more prone to colds remained more prone to colds, just the same.
It’s important to get plenty of cold, fresh air, as this kills/inactivates pathogens: True or False?
Broadly False, though most pathogens do have an optimal operating temperature that (for obvious reasons) is around normal human body temperature.
However, given that they don’t generally have to survive outside of a host body for long to get passed on, the fact that the pathogens may be a little sluggish in the great outdoors will not change the fact that they will be delighted by the climate in your respiratory tract as soon as you get back into the warm.
With regard to the cold air not being a reliable killer/inactivator of pathogens, we call to the witness stand…
Polar Bear Dies From Bird Flu As H5N1 Spreads Across Globe
(it was found near Utqiagvik, one of the northernmost communities in Alaska)
Because pathogens like human body temperature, raising the body temperature is a way to kill/inactivate them: True or False?
True! Unfortunately, it’s also a way to kill us. Because we, too, cannot survive for long above our normal body temperature.
So, for example, bundling up warmly and cranking up the heating won’t necessarily help, because:
- if the temperature is comfortable for you, it’s comfortable for the pathogen
- if the temperature is dangerous to the pathogen, it’s dangerous to you too
This is why the fever response evolved, and/but why many people with fevers die anyway. It’s the body’s way of playing chicken with the pathogen, challenging “guess which of us can survive this for longer!”
Temperature has no bearing on infection risk: True or False?
True and/or False, circumstantially. This one’s a little complex, but let’s break it down to the essentials.
- Temperature has no direct effect, for the reasons we outlined above
- Temperature is often related to humidity, which does have an effect
- Temperature does tend to influence human behavior (more time spent in open spaces with good ventilation vs more time spent in closed quarters with poor ventilation and/or recycled air), which has an obvious effect on transmission rates
The first one we covered, and the third one is self-evident, so let’s look at the second one:
Temperature is often related to humidity, which does have an effect
When the environmental temperature is warmer, water droplets in the air will tend to be bigger, and thus drop to the ground much more quickly.
When the environmental temperature is colder, water droplets in the air will tend to be smaller, and thus stay in the air for longer (along with any pathogens those water droplets may be carrying).
Some papers on the impact of this:
- Cold temperature and low humidity are associated with increased occurrence of respiratory tract infections
- A Decrease in Temperature and Humidity Precedes Human Rhinovirus Infections in a Cold Climate
So whatever temperature you like to keep your environment, humidity is a protective factor against respiratory infections, and dry air is a risk factor.
So, for example:
- If the weather doesn’t suit having good ventilation, a humidifier is a good option
- Being in an airplane is one of the worst places to be for this, outside of a hospital
Don’t have a humidifier? Here’s an example product on Amazon, but by all means shop around.
A crock pot with hot water in and the lid off is also a very workable workaround too
Take care!
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