Simply The Pits: These Underarm Myths!
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Are We Taking A Risk To Smell Fresh As A Daisy?
Yesterday, we asked you for your health-related view of underarm deodorants.
So, what does the science say?
They can cause (or increase risk of) cancer: True or False?
False, so far as we know. Obviously it’s very hard to prove a negative, but there is no credible evidence that deodorants cause cancer.
The belief that they do comes from old in vitro studies applying the deodorant directly to the cells in question, like this one with canine kidney tissues in petri dishes:
Antiperspirant Induced DNA Damage in Canine Cells by Comet Assay
Which means that if you’re not a dog and/or if you don’t spray it directly onto your internal organs, this study’s data doesn’t apply to you.
In contrast, more modern systematic safety reviews have found…
❝Neither is there clear evidence to show use of aluminum-containing underarm antiperspirants or cosmetics increases the risk of Alzheimer’s Disease or breast cancer.
Metallic aluminum, its oxides, and common aluminum salts have not been shown to be either genotoxic or carcinogenic.❞
(however, one safety risk it did find is that we should avoid eating it excessively while pregnant or breastfeeding)
Alternatives like deodorant rocks have fewer chemicals and thus are safer: True or False?
True and False, respectively. That is, they do have fewer chemicals, but cannot in scientific terms be qualifiably, let alone quantifiably, described as safer than a product that was already found to be safe.
Deodorant rocks are usually alum crystals, by the way; that is to say, aluminum salts of various kinds. So if it was aluminum you were hoping to avoid, it’s still there.
However, if you’re trying to cut down on extra chemicals, then yes, you will get very few in deodorant rocks, compared to the very many in spray-on or roll-on deodorants!
Soap and water is a safe, simple, and sufficient alternative: True or False?
True or False, depending on what you want as a result!
- If you care that your deodorant also functions as an antiperspirant, then no, soap and water will certainly not have an antiperspirant effect.
- If you care only about washing off bacteria and eliminating odor for the next little while, then yes, soap and water will work just fine.
Bonus myths:
There is no difference between men’s and women’s deodorants, apart from the marketing: True or False?
False! While to judge by the marketing, the only difference is that one smells of “evening lily” and the other smells of “chainsaw barbecue” or something, the real difference is…
- The “men’s” kind is designed to get past armpit hair and reach the skin without clogging the hair up.
- The “women’s” kind is designed to apply a light coating to the skin that helps avoid chafing and irritation.
In other words… If you are a woman with armpit hair or a man without, you might want to ignore the marketing and choose according to your grooming preferences.
Hopefully you can still find a fragrance that suits!
Shaving (or otherwise depilating) armpits is better for hygiene: True or False?
True or False, depending on what you consider “hygiene”.
Consistent with popular belief, shaving means there is less surface area for bacteria to live. And empirically speaking, that means a reduction in body odor:
However, shaving typically causes microabrasions, and while there’s no longer hair for the bacteria to enjoy, they now have access to the inside of your skin, something they didn’t have before. This can cause much more unpleasant problems in the long-run, for example:
❝Hidradenitis suppurativa is a chronic and debilitating skin disease, whose lesions can range from inflammatory nodules to abscesses and fistulas in the armpits, groin, perineum, inframammary region❞
Read more: Hidradenitis suppurativa: Basic considerations for its approach: A narrative review
And more: Hidradenitis suppurativa: Epidemiology, clinical presentation, and pathogenesis
If this seems a bit “damned if you do; damned if you don’t”, this writer’s preferred way of dodging both is to use electric clippers (the buzzy kind, as used for cutting short hair) to trim hers down low, and thus leave just a little soft fuzz.
What you do with yours is obviously up to you; our job here is just to give the information for everyone to make informed decisions whatever you choose 🙂
Take care!
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Is thunderstorm asthma becoming more common?
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When spring arrives, so do warnings about thunderstorm asthma. But a decade ago, most of us hadn’t heard of it.
So where did thunderstorm asthma come from? Is it a new phenomenon?
In 2016, the world’s most catastrophic thunderstorm asthma event took Melbourne by surprise. An increase in warnings and monitoring is partly a response to this.
But there are also signs climate change may be exacerbating the likelihood of thunderstorm asthma, with more extreme weather, extended pollen seasons and a rise in Australians reporting hay fever.
A landmark catastrophe
The first time many Australians heard of thunderstorm asthma was in November 2016, when a major event rocked Melbourne.
During a late night storm, an estimated 10,000 people were rushed to hospitals with severe asthma attacks. With thousands of calls on emergency lines, ambulances and emergency departments were unprepared to handle the rapid increase in people needing urgent medical care. Tragically, ten of those people died.
This was the most catastrophic thunderstorm asthma event in recorded history and the first time deaths have ever occurred anywhere in the world.
In response, the Victorian Department of Health implemented initiatives, including public awareness campaigns and improvements to health and emergency services, to be ready for future thunderstorm asthma events.
A network of pollen monitoring stations was also set up across the state to gather data that helps to predict future events.
A problem for decades
While this event was unexpected, it wasn’t the first time we’d had thunderstorm asthma in Australia – we’ve actually known about it for decades.
Melbourne reported its first instance of thunderstorm asthma back in 1984, only a year after this phenomenon was first discovered in Birmingham in the United Kingdom.
Thunderstorm asthma has since been reported in other parts of Australia, including Canberra and New South Wales. But it is still most common in Melbourne. Compared to any other city (or country) the gap is significant: over a quarter of all known events worldwide have occurred in Melbourne.
Why Melbourne?
Melbourne’s location makes it a hotspot for these kinds of events. Winds coming from the north of Melbourne tend to be dry and hot as they come from deserts in the centre of Australia, while winds from the south are cooler as they come from the ocean.
When hot and cool air mix above Melbourne, it creates the perfect conditions for thunderstorms to form.
Northern winds also blow a lot of pollen from farmlands into the city, in particular grass pollen. This is not only the most common cause of seasonal hay fever in Melbourne but also a major trigger of thunderstorm asthma.
Why grass pollen?
There’s a particular reason grass pollen is the main culprit behind thunderstorm asthma in Australia. During storms there is a lot of moisture in the air. Grass pollen will absorb this moisture, making it swell up like a water balloon.
If pollen absorbs too much water whilst airborne, it can burst or “rupture,” releasing hundreds of microscopic particles into the air that can be swept by powerful winds.
Normally, when you breathe in pollen it gets stuck in your upper airway – for example, your nose and throat. This is what causes typical hay fever symptoms such as sneezing or runny nose.
But the microscopic particles released from ruptured grass pollen are much smaller and don’t get stuck as easily in the upper airway. Instead, they can travel deep into your airways until they reach your lungs. This may trigger more severe symptoms, such as wheezing or difficulty breathing, even in people with no prior history of asthma.
So who is at risk?
You might think asthma is the biggest risk factor for thunderstorm asthma. In fact, the biggest risk factor is hay fever.
Up to 99% of patients who went to the emergency department during the Melbourne 2016 event had hay fever, while a majority (60%) had no prior diagnosis of asthma.
Every single person hospitalised was allergic to at least one type of grass pollen. All had a sensitivity to ryegrass.
Is thunderstorm asthma becoming more common?
Thunderstorm asthma events are rare, with just 26 events officially recorded worldwide.
However there is evidence these events could become more frequent and severe in coming years, due to climate change. Higher temperatures and pollution could be making plants produce more pollen and pollen seasons last much longer.
Extreme weather events, including thunderstorms, are also expected to become more common and severe.
In addition, there are signs rates that hay fever may be increasing. The number of Australians reporting allergy symptoms have risen from 15% in 2008 to 24% in 2022. Similar trends in other countries has been linked to climate change.
How can I prepare?
Here are three ways you can reduce your risk of thunderstorm asthma:
- stock up on allergy medication and set up an asthma action plan with your GP
- check daily pollen forecasts for the estimated pollen level and risk of a thunderstorm asthma event in your local area
- on days with high pollen or a high risk of thunderstorm asthma, spend less time outside or wear a surgical face mask to reduce your symptoms.
Kira Morgan Hughes, PhD Candidate in Allergy and Asthma, School of Life and Environmental Sciences, Deakin University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Celery vs Radish – Which is Healthier?
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Our Verdict
When comparing celery to radish, we picked the celery.
Why?
It was very close! And yes, surprising, we know. Generally speaking, the more colorful/pigmented an edible plant is, the healthier it is. Celery is just one of those weird exceptions (as is cauliflower, by the way).
Macros-wise, these two are pretty much the same—95% water, with just enough other stuff to hold them together. The proportions of “other stuff” are also pretty much equal.
In the category of vitamins, celery has more vitamin K while radish has more vitamin C; the other vitamins are pretty close to equal. We’ll call this one a minor win for celery, as vitamin K is found in fewer foods than vitamin C.
When it comes to minerals, celery has more calcium, manganese, phosphorus, and potassium, while radish has more copper, iron, selenium, and zinc. We’ll call this a minor win for radish, as the margins are a little wider for its minerals.
So, that makes the score 1–1 so far.
Both plants have an assortment of polyphenols, of which, when we add up the averages, celery comes out on top by some way. Celery also comes out on top when we do a head-to-head of the top flavonoid of each; celery has 5.15mg/100g of apigenin to radish’s 0.63mg/100g kaempferol.
Which means, both are great healthy foods, but celery wins the day.
Want to learn more?
You might like to read:
Celery vs Cucumber – Which is Healthier?
Take care!
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Our Top 5 Spices: How Much Is Enough For Benefits?
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A spoonful of pepper makes the… Hang on, no, that’s not right…
We know that spices are the spice of life, and many have great health-giving qualities. But…
- How much is the right amount?
- What’s the minimum to get health benefits?
- What’s the maximum to avoid toxicity?
That last one always seems like a scary question, but please bear in mind: everything is toxic at a certain dose. Oxygen, water, you-name-it.
On the other hand, many things have a toxicity so low that one could not physically consume it sufficiently faster than the body eliminates it, to get a toxic build-up.
Consider, for example, the €50 banknote that was nearly withdrawn from circulation because one of the dyes used in it was found to be toxic. However, the note remained in circulation after scientists patiently explained that a person would have to eat many thousands of them to get a lethal dose.
So, let’s address these questions in reverse order:
What’s the maximum to avoid toxicity?
In the case of the spices we’ll look at today, the human body generally* has high tolerance for them if eaten at levels that we find comfortable eating.
*IMPORTANT NOTE: If you have (or may have) a medical condition that may be triggered by spices, go easier on them (or if appropriate, abstain completely) after you learn about that.
Check with your own physician if unsure, because not only are we not doctors, we’re specifically not your doctors, and cannot offer personalized health advice.
We’re going to be talking in averages and generalizations here. Caveat consumator.
For most people, unless you are taking the spice in such quantities that you are folding space and seeing the future, or eating them as the main constituents of your meal rather than an embellishment, you should be fine. Please don’t enter a chilli-eating contest and sue us.
What is the minimum to get health benefits and how much should we eat?
The science of physiology generally involves continuous rather than discrete data, so there’s not so much a hard threshold, as a point at which the benefits become significant. The usefulness of most nutrients we consume, be they macro- or micro-, will tend to have a bell curve.
In other words, a tiny amount won’t do much, the right amount will have a good result, and usefulness will tail off after that point. To that end, we’re going to look at the “sweet spot” of peaking on the graph.
Also note: the clinical dose is the dose of the compound, not the amount of the food that one will need to eat to get that dose. For example, food x containing compound y will not usually contain that compound at 100% rate and nothing else. We mention this so that you’re not surprised when we say “the recommended dose is 5mg of compound, so take a teaspoon of this spice”, for example.
Further note: we only have so much room here, so we’re going to list only the top benefits, and not delve into the science of them. You can see the related main features for more details, though!
The “big 5” health-giving spices, with their relevant active compound:
- Black pepper (piperine)
- Hot pepper* (capsaicin)
- Garlic (allicin)
- Ginger (gingerol)
- Turmeric (curcumin**)
*Cayenne pepper is very high in capsaicin; chilli peppers are also great
**not the same thing as cumin, which is a completely different plant. Cumin does have some health benefits of its own, but not in the same league as the spices above, and there’s only so much we have room to cover today.
Black pepper
- Benefits: antioxidant, anti-cancer, boosts bioavailability of other nutrients, aids digestion
- Dosage: 5–20mg for benefits
- Suggestion: ½ teaspoon of black pepper is sufficient for benefits. However, this writer’s kitchen dictum in this case is “if you can’t see the black pepper in/on the food, add more”—but that’s more about taste!
- Related main feature: Black Pepper’s Anti-Cancer Arsenal (And More)
Hot Pepper
- Benefits: anti-inflammatory, metabolism accelerator
- Dosage: 6mg gives benefits, 500mg is a common dose in capsules
- Suggestion: if not making a spicy dish, consider using a teaspoon of cayenne as part of the seasoning for rice or potatoes
- Related main feature: Capsaicin For Weight Loss And Against Inflammation
Garlic
- Benefits: heart health, blood sugar balancing, anti-cancer
- Dosage: 4–8µg for benefits
- Suggestion: 1–2 cloves daily is generally good. However, cooking reduces allicin content (and so does oxidation after cutting/crushing), so you may want to adjust accordingly if doing those things.
- Related main feature: The Many Health Benefits Of Garlic
Ginger
- Benefits: anti-inflammatory, antioxidant, anti-nausea
- Dosage: 3–4g for benefits
- Suggestion: 1 teaspoon grated raw ginger or ½ a teaspoon powdered ginger, can be used in baking or as part of the seasoning for a stir-fry
- Related main feature: Ginger Does A Lot More Than You Think
Turmeric
- Benefits: anti-inflammatory, anti-cancer
- Dosage: 500–2000mg for benefits
- Suggestion: ¼ teaspoon per day is sufficient for benefits; ½ teaspoon dropped into the water when cooking rice will infuse the rice with turmeric (which is very water-soluble), turn the rice a pretty golden color, and not affect the flavor. Throw in some black pepper as it increases the bioavailability of curcumin up to 2000%
- Related main feature: Why Curcumin (Turmeric) Is Worth Its Weight In Gold
Closing notes
The above five spices are very healthful for most people. Personal physiology can and will vary, so if in doubt, a) check with your doctor b) start at lowest doses and establish your tolerance (or lack thereof).
Enjoy, and stay well!
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Does Ginseng Increase Testosterone Levels?
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❓ Q&A With 10almonds Subscribers!
Q: You talked about spearmint as reducing testosterone levels, what about ginseng for increasing them?
A: Hormones are complicated and often it’s not a simple matter of higher or lower levels! It can also be a matter of…
- how your body converts one thing into another
- how your body responds (or not) to something according to how the relevant hormone’s receptors are doing
- …and whether there’s anything else blocking those receptors.
All this to say: spearmint categorically is an anti-androgen, but the mechanism of action remains uncertain.
Panax ginseng, meanwhile, is one of the most well-established mysteries in herbal medicine.
Paradoxically, it seems to improve both male and female hormonal regulation, despite being more commonly associated with the former.
- It doesn’t necessarily increase or decrease testosterone or estrogen levels (but it can, even if indirectly)
- It does improve sexual function
- …and alleviates symptoms associated with conditions as varied as:
- Late-onset hypogonadism (common for men during the andropause)
- Benign prostate hyperplasia (again common for men during the andropause)
- …and also counteracts unwanted side-effects of finasteride. Finasteride is often taken by men as a hair loss remedy or, less often but critically, in the case of an enlarged prostate.
But it also…
- Alleviates symptoms of PCOS (polycystic ovary syndrome, which effects around 20% of women)
- May even be an effective treatment for PCOS (rat model only so far)
- It also may improve female reproductive fertility more generally (the studies are down to fruit flies now though)
Bottom line: Panax ginseng is popularly taken to improve natural hormone function, a task at which it appears to excel.
Scientists are still working out exactly how it does the many things it appears to do.
Progress has been made, and it clearly is science rather than witchcraft, but there are still far more unanswered questions than resolved ones!
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Staying Strong: Tips To Prevent Muscle Loss With Age
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Dr. Andrea Furlan, specialist in physical medicine and rehabilitation with 30 years of experience, has advice:
Fighting sarcopenia
Sarcopenia is so common as to be considered “natural”, but “natural” does not mean “obligatory” and it certainly doesn’t mean “healthy”. As for how to fight it?
You may be thinking “let us guess, is it eat protein and do resistance exercises? And yes it is, but that’s only part of it…
Firstly, she recommends remembering why you are doing this, or because understanding is key to compliance (i.e. your perfect diet and exercise program will mean nothing if you don’t actually do it, and you won’t do it enough to make it a habit, let alone keep it up, if the reasons aren’t clear in your mind).
Sarcopenia comes with an increased risk of falls, reduced physical capacity in general, resultant disability, social isolation, and depression. Of course, this is not a one-to-one equation; you will not necessarily become depressed the moment your muscle mass is below a certain percentage, but statistically speaking, the road to ruin is laid out clearly.
Secondly, she recommends being on the lookout for it. If you check your body composition regularly with a gadget, that’s great and laudable; if you don’t, then a) consider getting one (here’s an example product on Amazon), and b) watch out for decreased muscle strength, fatigue, reduced stamina, noticeable body shape changes with muscle loss and (likely) fat gain.
Thirdly, she recommends more than just regular resistance training and good protein intake. Yes, she recommends those things too, but also getting enough water (can’t rebuild the body without it), avoiding a sedentary lifestyle (sitting leads to atrophy of many supporting and stabilizing muscles, you know, the kind of muscles that don’t look flashy but stop you falling down), and getting good sleep—vital for all kinds of body maintenance, and muscle maintenance is no exception (there’s a reason bodybuilders sleep 9–12 hours daily when in a gaining phase; you don’t need to do that, but don’t skimp on your 7–9 hours, yes, really, even you, yes, at any age).
Lastly, she recommends continuing to learn about the topic, as otherwise it’s easy to go off-track.
For more information on all of the above and more, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
- Protein: How Much Do We Need, Really?
- Resistance Is Useful! (Especially As We Get Older)
- Resistance Beyond Weights
- HIIT, But Make It HIRT ← this is about high-intensity resistance training (HIRT); confusing the muscles like one confuses the heart in HIIT, which thus yields improved results
- Sleep: Yes, You Really Do Still Need It
Take care!
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The Tiniest Seeds With The Most Value
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If You’re Not Taking Chia, You’re Missing Out
Last Tuesday, we wrote about nutritional psychiatry, and the benefits of eating for one’s mental health.
You can check out Dr. Uma Naidoo’s to-dos, here:
The 6 Pillars Of Nutritional Psychiatry
In response, one of our subscribers wrote to mention:
❝Really interesting….just put chia seeds in my diet love them……taking the Drs advice.❞
~ Cindy, 10almonds subscriber
And then! On Friday, our tip at the top of the newsletter was:
Not sure how to incorporate chia seeds into your diet? It’s easier to want the benefits of their many brain-healthy (and otherwise-healthy, too) nutrients, than it is to know what to do with them necessarily, and not everyone enjoys seeds as a snack. So…
When you cook rice, throw in a tablespoon of chia seeds too. The cooking process will soften them and they won’t be texturally any different than the rice, but the nutrients will be all there.
They can also be thrown in with lentils, in the same fashion! Or oatmeal, when cooking it or making overnight oats.
We’ll be honest, it was Cindy’s comment that prompted us to suggest it. But wait! There was more to come in response:
❝You had a teaser ..on Chia seed.would of liked a article on the benefits . I’ve just discovered Chia seeds…❞
~ Cindy, 10almonds subscriber
So, Cindy, this one’s for you:
Nutritional powerhouse
First things first, these tiny seeds have a lot of nutrients. There are not many more nutrient-dense foods than this (there’s a kind of seaweed that might be a contender; we’ll have to do some research and get back to you).
Check them out:
USDA Nutritional Factsheet: Chia Seeds
So much protein and healthy fat, so many vitamins and minerals, and so many miscellaneous other micronutrients that we’d be here all day to list them (which is why we linked the above factsheet instead).
Antioxidants in abundance
These deserve a special mention, because they include quercetin which we’ve written about previously:
Fight Inflammation & Protect Your Brain, With Quercetin
…as well as quite a collection of others (including chlorogenic acid and caffeic acid, which may sound alarming but are great for lowering your blood pressure and against inflammation, respectively):
- The effect of chlorogenic acid on blood pressure: a systematic review and meta-analysis of randomized clinical trials
- Synthesis, preliminary bioevaluation and computational analysis of caffeic acid analogues
There are others too, with cardioprotective effects, liver-healthy effects, and anticancer properties:
Nutritional and therapeutic perspectives of Chia (Salvia hispanica L.): a review
Good for the heart and blood
Check it out:
- Chia flour supplementation reduces blood pressure in hypertensive subjects
- Chia seed (Salvia hispanica L.) supplementation to the diet of adults with type 2 diabetes improved systolic blood pressure: A randomized controlled trial
Oh, and about diabetes? There’s more, this time pertaining to reducing after-dinner blood sugars (or “postpranidial glycemia”, in sciencese):
- Reduction in postprandial glucose excursion and prolongation of satiety: possible explanation of the long-term effects of whole grain Salba (Salvia Hispanica L.)
- Effect of whole and ground Salba seeds (Salvia Hispanica L.) on postprandial glycemia in healthy volunteers: a randomized controlled, dose-response trial
Good for the brain
Regular 10almonds readers will know that “what’s good for the blood, is good for the brain” is a very good rule of thumb already, but their highomega-3 content makes them especially so:
What Omega-3 Fatty Acids Really Do For Us
Want some?
We don’t sell them, but you can probably find them in your local supermarket and/or health food store, and if you prefer getting things online, here for your convenience is an example product on Amazon
Enjoy!
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