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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Small Changes For A Healthier Life
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
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
I am interested in what I can substitute for ham in bean soup?
Well, that depends on what the ham was like! You can certainly buy ready-made vegan lardons (i.e. small bacon/ham bits, often in tiny cubes or similar) in any reasonably-sized supermarket. Being processed, they’re not amazing for the health, but are still an improvement on pork.
Alternatively, you can make your own seitan! Again, seitan is really not a health food, but again, it’s still relatively less bad than pork (unless you are allergic to gluten, in which case, definitely skip this one).
Alternatively alternatively, in a soup that already contains beans (so the protein element is already covered), you could just skip the ham as an added ingredient, and instead bring the extra flavor by means of a little salt, a little yeast extract (if you don’t like yeast extract, don’t worry, it won’t taste like it if you just use a teaspoon in a big pot, or half a teaspoon in a smaller pot), and a little smoked paprika. If you want to go healthier, you can swap out the salt for MSG, which enhances flavor in a similar fashion while containing less sodium.
Wondering about the health aspects of MSG? Check out our main feature on this, from last month:
I thoroughly enjoy your daily delivery. I’d love to see one for teens too!
That’s great to hear! The average age of our subscribers is generally rather older, but it’s good to know there’s an interest in topics for younger people. We’ll bear that in mind, and see what we can do to cater to that without alienating our older readers!
That said: it’s never too soon to be learning about stuff that affects us when we’re older—there are lifestyle factors at 20 that affect Alzheimer’s risk at 60, for example (e.g. drinking—excessive drinking at 20* is correlated to higher Alzheimer’s risk at 60).
*This one may be less of an issue for our US readers, since the US doesn’t have nearly as much of a culture of drinking under 21 as some places. Compare for example with general European practices of drinking moderately from the mid-teens, or the (happily, diminishing—but historically notable) British practice of drinking heavily from the mid-teens.
How much turmeric should I take each day?
Dr. Michael Greger’s research (of “Dr. Greger’s Daily Dozen” and “How Not To Die” fame) recommends getting at least ¼ tsp turmeric per day
Remember to take it with black pepper though, for a 2000% absorption bonus!
A great way to get it, if you don’t want to take capsules and don’t want to eat spicy food every day, is to throw a teaspoon of turmeric in when making a pot of (we recommend wholegrain!) rice. Turmeric is very water-soluble, so it’ll be transferred into the rice easily during cooking. It’ll make the rice a nice golden yellow color, and/but won’t noticeably change the taste.
Again remember to throw in some black pepper, and if you really want to boost the nutritional content,some chia seeds are a great addition too (they’ll get cooked with the rice and so it won’t be like eating seeds later, but the nutrients will be there in the rice dish).
You can do the same with par-boiled potatoes or other root vegetables, but because cooking those has water to be thrown away at the end (unlike rice), you’ll lose some turmeric in the water.
Request: more people need to be aware of suicidal tendencies and what they can do to ward them off
That’s certainly a very important topic! We’ll cover that properly in one of our Psychology Sunday editions. In the meantime, we’ll mention a previous special that we did, that was mostly about handling depression (in oneself or a loved one), and obviously there’s a degree of crossover:
The Mental Health First-Aid That You’ll Hopefully Never Need
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Get Past Executive Dysfunction
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In mathematics, there is a thing called the “travelling salesman problem”, and it is hard. Not just subjectively; it is classified in mathematical terms as an “NP-hard problem”, wherein NP stands for “nondeterministic polynomial”.
The problem is: a travelling salesman must visit a certain list of cities, order undetermined, by the shortest possible route that visits them all.
To work out what the shortest route is involves either very advanced mathematics, or else solving it by brute force, which means measuring every possible combination order (which number gets exponentially larger very quickly after the first few cities) and then selecting the shortest.
Why are we telling you this?
Executive dysfunction’s analysis paralysis
Executive dysfunction is the state of knowing you have things to do, wanting to do them, intending to do them, and then simply not doing them.
Colloquially, this can be called “analysis paralysis” and is considered a problem of planning and organizing, as much as it is a problem of initiating tasks.
Let’s give a simple example:
You wake up in the morning, and you need to go to the bathroom. But the bathroom will be cold, so you’ll want to get dressed first. However, it will be uncomfortable to get dressed while you still need to use the bathroom, so you contemplate doing that first. Those two items are already a closed loop now. You’re thirsty, so you want to have a drink, but the bathroom is calling to you. Sitting up, it’s colder than under the covers, so you think about getting dressed. Maybe you should have just a sip of water first. What else do you need to do today anyway? You grab your phone to check, drink untouched, clothes unselected, bathroom unvisited.
That was a simple example; now apply that to other parts of your day that have much more complex planning possible.
This is like the travelling salesman problem, except that now, some things are better if done before or after certain other things. Sometimes, possibly, they are outright required to be done before or after certain other things.
So you have four options:
- Solve the problem of your travelling-salesman-like tasklist using advanced mathematics (good luck if you don’t have advanced mathematics)
- Solve the problem by brute force, calculating all possible variations and selecting the shortest (good luck getting that done the same day)
- Go with a gut feeling and stick to it (people without executive dysfunction do this)
- Go towards the nearest item, notice another item on the way, go towards that, notice a different item on the way there, and another one, get stuck for a while choosing between those two, head towards one, notice another one, and so on until you’ve done a very long scenic curly route that has narrowly missed all of your targetted items (this is the executive dysfunction approach).
So instead, just pick one, do it, pick another one, do it, and so forth.
That may seem “easier said than done”, but there are tools available…
Task zero
We’ve mentioned this before in the little section at the top of our daily newsletter that we often use for tips.
One of the problems that leads to executive function is a shortage of “working memory”, like the RAM of a computer, so it’s easy to get overwhelmed with lists of things to do.
So instead, hold only two items in your mind:
- Task zero: the thing you are doing right now
- Task one: the thing you plan to do next
When you’ve completed task zero, move on to task one, renaming it task zero, and select a new task one.
With this approach, you will never:
- Think “what did I come into this room for?”
- Get distracted by alluring side-quests
Do not get corrupted by the cursed artefact
In fantasy, and occasionally science fiction, there is a trope: an item that people are drawn towards, but which corrupts them, changes their motivations and behaviors for the worse, as well as making them resistant to giving the item up.
An archetypal example of this would be the One Ring from The Lord of the Rings.
It’s easy to read/watch and think “well I would simply not be corrupted by the cursed artefact”.
And then pick up one’s phone to open the same three apps in a cycle for the next 40 minutes.
This is because technology that is designed to be addictive hijacks our dopamine processing, and takes advantage of executive dysfunction, while worsening it.
There are some ways to mitigate this:
Rebalancing Dopamine (Without “Dopamine Fasting”)
…but one way to avoid it entirely is to mentally narrate your choices. It’s a lot harder to make bad choices with an internal narrator going:
- “She picked up her phone absent-mindedly, certain that this time it really would be only a few seconds”
- “She picked up her phone for the eleventy-third time”
- “Despite her plan to put her shoes on, she headed instead for the kitchen”
This method also helps against other bad choices aside from those pertaining to executive dysfunction, too:
- “Abandoning her plan to eat healthily, she lingered in the confectionary aisle, scanning the shelves for sugary treats”
- “Monday morning will be the best time to start my new exercise regime”, she thought, for the 35th week so far this year
Get pharmaceutical or nutraceutical help
While it’s not for everyone, many people with executive dysfunction benefit from ADHD meds. However, they have their pros and cons (perhaps we’ll do a run-down one of these days).
There are also gentler options that can significantly ameliorate executive dysfunction, for example:
Bacopa Monnieri: A Well-Evidenced Cognitive Enhancer For Focus & More
Enjoy!
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We looked at 700 plant-based foods to see how healthy they really are. Here’s what we found
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If you’re thinking about buying plant-based foods, a trip to the supermarket can leave you bewildered.
There are plant-based burgers, sausages and mince. The fridges are loaded with non-dairy milk, cheese and yoghurt. Then there are the tins of beans and packets of tofu.
But how much is actually healthy?
Our nutritional audit of more than 700 plant-based foods for sale in Australian supermarkets has just been published. We found some products are so high in salt or saturated fat, we’d struggle to call them “healthy”.
We took (several) trips to the supermarket
In 2022, we visited two of each of four major supermarket retailers across Melbourne to collect information on the available range of plant-based alternatives to meat and dairy products.
We took pictures of the products and their nutrition labels.
We then analysed the nutrition information on the packaging of more than 700 of these products. This included 236 meat substitutes, 169 legumes and pulses, 50 baked beans, 157 dairy milk substitutes, 52 cheese substitutes and 40 non-dairy yoghurts.
Plant-based meats were surprisingly salty
We found a wide range of plant-based meats for sale. So, it’s not surprising we found large variations in their nutrition content.
Sodium, found in added salt and which contributes to high blood pressure, was our greatest concern.
The sodium content varied from 1 milligram per 100 grams in products such as tofu, to 2,000mg per 100g in items such as plant-based mince products.
This means we could eat our entire daily recommended sodium intake in just one bowl of plant-based mince.
An audit of 66 plant-based meat products in Australian supermarkets conducted in 2014 found sodium ranged from 316mg in legume-based products to 640mg in tofu products, per 100g. In a 2019 audit of 137 products, the range was up to 1,200mg per 100g.
In other words, the results of our audit seems to show a consistent trend of plant-based meats getting saltier.
Looking for plant-based meat? Check the label for the sodium content.
Michael Vi/Shutterstock
What about plant-based milks?
Some 70% of the plant-based milks we audited were fortified with calcium, a nutrient important for bone health.
This is good news as a 2019-2020 audit of 115 plant-based milks from Melbourne and Sydney found only 43% of plant-based milks were fortified with calcium.
Of the fortified milks in our audit, almost three-quarters (73%) contained the recommended amount of calcium – at least 100mg per 100mL.
We also looked at the saturated fat content of plant-based milks.
Coconut-based milks had on average up to six times higher saturated fat content than almond, oat or soy milks.
Previous audits also found coconut-based milks were much higher in saturated fat than all other categories of milks.
Some plant-based milks were healthier than others.
TY Lim/Shutterstock
A first look at cheese and yoghurt alternatives
Our audit is the first study to identify the range of cheese and yoghurt alternatives available in Australian supermarkets.
Calcium was only labelled on a third of plant-based yoghurts, and only 20% of supermarket options met the recommended 100mg of calcium per 100g.
For plant-based cheeses, most (92%) were not fortified with calcium. Their sodium content varied from 390mg to 1,400mg per 100g, and saturated fat ranged from 0g to 28g per 100g.
So, what should we consider when shopping?
As a general principle, try to choose whole plant foods, such as unprocessed legumes, beans or tofu. These foods are packed with vitamins and minerals. They’re also high in dietary fibre, which is good for your gut health and keeps you fuller for longer.
If opting for a processed plant-based food, here are five tips for choosing a healthier option.
1. Watch the sodium
Plant-based meat alternatives can be high in sodium, so look for products that have around 150-250mg sodium per 100g.
2. Pick canned beans and legumes
Canned chickpeas, lentils and beans can be healthy and low-cost additions to many meals. Where you can, choose canned varieties with no added salt, especially when buying baked beans.
3. Add herbs and spices to your tofu
Tofu can be a great alternative to meat. Check the label and pick the option with the highest calcium content. We found flavoured tofu was higher in salt and sugar content than minimally processed tofu. So it’s best to pick an unflavoured option and add your own flavours with spices and herbs.
4. Check the calcium
When choosing a non-dairy alternative to milk, such as those made from soy, oat, or rice, check it is fortified with calcium. A good alternative to traditional dairy will have at least 100mg of calcium per 100g.
5. Watch for saturated fat
If looking for a lower saturated fat option, almond, soy, rice and oat varieties of milk and yoghurt alternatives have much lower saturated fat content than coconut options. Pick those with less than 3g per 100g.
Laura Marchese, PhD Student at the Institute for Physical Activity and Nutrition, Deakin University and Katherine Livingstone, NHMRC Emerging Leadership Fellow and Senior Research Fellow at the Institute for Physical Activity and Nutrition, Deakin University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Strong Curves – by Bret Contreras & Kellie Davis
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The title (and subtitle) is, of course, an appeal to vanity. However, the first-listed author is well-known as “The Glute Guy”, and he takes this very seriously, not just for aesthetic reasons but also for practical reasons.
After all, when it comes to posture and stability, a lot rests on our hips, and hips, well, they rest on our butt and thighs. What’s more, the gluteus maximus is the largest muscle in the human body, so really, is it a good one to neglect? Probably not, and your lower back will definitely thank you for keeping your glutes in good order, too.
That said, while it’s a focal point, it’s not the be-all-and-end-all, and this book does cover the whole body.
The book takes the reader from “absolute beginner” to “could compete professionally”, with clearly-illustrated and well-described exercises. We also get a strong “crash course” in the relevant anatomy and physiology, and even a chapter on nutrition, which is a lot better than a lot of exercise books’ efforts in that regard.
For those who like short courses, this book has several progressive 12-week workout plans that take the reader from a very clear starting point to a very clear goal point.
Another strength of the book is that while a lot of exercises expect (and require) access to a gym, there are also whole sections of “at home / bodyweight” exercises, including 12-week workout plans for such, as described above.
Bottom line: there’s really nothing bad that this reviewer can find to say about this one—highly recommendable to any woman who wants to get strong while keeping a feminine look.
Click here to check out Strong Curves, and rebuild your body, your way!
PS: at first glance, the cover art looks like an AI model; it’s not; that’s the co-author Kellie Davis, who also serves as the model through the book’s many photographic illustrations.
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Purpose – by Gina Bianchini
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To address the elephant in the room, this is not a rehash of Rick Warren’s best-selling “The Purpose-Driven Life”. Instead, this book is (in this reviewer’s opinion) a lot better. It’s a lot more comprehensive, and it doesn’t assume that what’s most important to the author will be what’s most important to you.
What’s it about, then? It’s about giving your passion (whatever it may be) the tools to have an enduring impact on the world. It recommends doing this by leveraging a technology that would once have been considered magic: social media.
Far from “grow your brand” business books, this one looks at what really matters the most to you. Nobody will look back on your life and say “what a profitable second quarter that was in such-a-year”. But if you do your thing well, people will look back and say:
- “he was a pillar of the community”
- “she raised that community around her”
- “they did so much for us”
- “finding my place in that community changed my life”
- …and so forth. Isn’t that something worth doing?
Bianchini takes the position of both “idealistic dreamer” and “realistic worker”.
Further, she blends the two beautifully, to give practical step-by-step instructions on how to give life to the community that you build.
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Want to sleep longer? Adding mini-bursts of exercise to your evening routine can help – new study
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Exercising before bed has long been discouraged as the body doesn’t have time to wind down before the lights go out.
But new research has found breaking up a quiet, sedentary evening of watching television with short bursts of resistance exercise can lead to longer periods of sleep.
Adults spend almost one third of the 24-hour day sleeping. But the quality and length of sleep can affect long-term health. Sleeping too little or waking often in the night is associated with an increased risk of heart disease and diabetes.
Physical activity during the day can help improve sleep. However, current recommendations discourage intense exercise before going to bed as it can increase a person’s heart rate and core temperature, which can ultimately disrupt sleep.
Nighttime habits
For many, the longest period of uninterrupted sitting happens at home in the evening. People also usually consume their largest meal during this time (or snack throughout the evening).
Insulin (the hormone that helps to remove sugar from the blood stream) tends to be at a lower level in the evening than in the morning.
Together these factors promote elevated blood sugar levels, which over the long term can be bad for a person’s health.
Our previous research found interrupting evening sitting every 30 minutes with three minutes of resistance exercise reduces the amount of sugar in the bloodstream after eating a meal.
But because sleep guidelines currently discourage exercising in the hours before going to sleep, we wanted to know if frequently performing these short bursts of light activity in the evening would affect sleep.
Activity breaks for better sleep
In our latest research, we asked 30 adults to complete two sessions based in a laboratory.
During one session the adults sat continuously for a four-hour period while watching streaming services. During the other session, they interrupted sitting by performing three minutes of body-weight resistance exercises (squats, calf raises and hip extensions) every 30 minutes.
After these sessions, participants went home to their normal life routines. Their sleep that evening was measured using a wrist monitor.
Our research found the quality of sleep (measured by how many times they woke in the night and the length of these awakenings) was the same after the two sessions. But the night after the participants did the exercise “activity breaks” they slept for almost 30 minutes longer.
Identifying the biological reasons for the extended sleep in our study requires further research.
But regardless of the reason, if activity breaks can extend sleep duration, then getting up and moving at regular intervals in the evening is likely to have clear health benefits.
Time to revisit guidelines
These results add to earlier work suggesting current sleep guidelines, which discourage evening exercise before bed, may need to be reviewed.
As the activity breaks were performed in a highly controlled laboratory environment, future research should explore how activity breaks performed in real life affect peoples sleep.
We selected simple, body-weight exercises to use in this study as they don’t require people to interrupt the show they may be watching, and don’t require a large space or equipment.
If people wanted to incorporate activity breaks in their own evening routines, they could probably get the same benefit from other types of exercise. For example, marching on the spot, walking up and down stairs, or even dancing in the living room.
The key is to frequently interrupt evening sitting time, with a little bit of whole-body movement at regular intervals.
In the long run, performing activity breaks may improve health by improving sleep and post-meal blood sugar levels. The most important thing is to get up frequently and move the body, in a way the works best for a person’s individual household.
Jennifer Gale, PhD candidate, Department of Human Nutrition, University of Otago and Meredith Peddie, Senior Lecturer, Department of Human Nutrition, University of Otago
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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