Is cold water bad for you? The facts behind 5 water myths
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We know the importance of staying hydrated, especially in hot weather. But even for something as simple as a drink of water, conflicting advice and urban myths abound.
Is cold water really bad for your health? What about hot water from the tap? And what is “raw water”? Let’s dive in and find out.
Myth 1: Cold water is bad for you
Some recent TikToks have suggested cold water causes health problems by somehow “contracting blood vessels” and “restricting digestion”. There is little evidence for this.
While a 2001 study found 51 out of 669 women tested (7.6%) got a headache after drinking cold water, most of them already suffered from migraines and the work hasn’t been repeated since.
Cold drinks were shown to cause discomfort in people with achalasia (a rare swallowing disorder) in 2012 but the study only had 12 participants.
For most people, the temperature you drink your water is down to personal preference and circumstances. Cold water after exercise in summer or hot water to relax in winter won’t make any difference to your overall health.
Myth 2: You shouldn’t drink hot tap water
This belief has a grain of scientific truth behind it. Hot water is generally a better solvent than cold water, so may dissolve metals and minerals from pipes better. Hot water is also often stored in tanks and may be heated and cooled many times. Bacteria and other disease-causing microorganisms tend to grow better in warm water and can build up over time.
It’s better to fill your cup from the cold tap and get hot water for drinks from the kettle.
Myth 3: Bottled water is better
While bottled water might be safer in certain parts of the world due to pollution of source water, there is no real advantage to drinking bottled water in Australia and similar countries.
According to University of Queensland researchers, bottled water is not safer than tap water. It may even be tap water. Most people can’t tell the difference either. Bottled water usually costs (substantially) more than turning on the tap and is worse for the environment.
What about lead in tap water? This problem hit the headlines after a public health emergency in Flint, Michigan, in the United States. But Flint used lead pipes with a corrosion inhibitor (in this case orthophosphate) to keep lead from dissolving. Then the city switched water sources to one without a corrosion inhibitor. Lead levels rose and a public emergency was declared.
Fortunately, lead pipes haven’t been used in Australia since the 1930s. While lead might be present in some old plumbing products, it is unlikely to cause problems.
Myth 4: Raw water is naturally healthier
Some people bypass bottled and tap water, going straight to the source.
The “raw water” trend emerged a few years ago, encouraging people to drink from rivers, streams and lakes. There is even a website to help you find a local source.
Supporters say our ancestors drank spring water, so we should, too. However, our ancestors also often died from dysentery and cholera and their life expectancy was low.
While it is true even highly treated drinking water can contain low levels of things like microplastics, unless you live somewhere very remote, the risks of drinking untreated water are far higher as it is more likely to contain pollutants from the surrounding area.
Myth 5: It’s OK to drink directly from hoses
Tempting as it may be, it’s probably best not to drink from the hose when watering the plants. Water might have sat in there, in the warm sun for weeks or more potentially leading to bacterial buildup.
Similarly, while drinking water fountains are generally perfectly safe to use, they can contain a variety of bacteria. It’s useful (though not essential) to run them for a few seconds before you start to drink so as to get fresh water through the system rather than what might have been sat there for a while.
We are fortunate to be able to take safe drinking water for granted. Billions of people around the world are not so lucky.
So whether you like it hot or cold, or somewhere in between, feel free to enjoy a glass of water this summer.
Just don’t drink it from the hose.
Oliver A.H. Jones, Professor of chemistry, RMIT University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Pulse – by Jenny Chandler
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Beans, chickpeas, and lentils are well-established super-healthy foods, but they’re often not a lot of people’s favorite. And why? Usually because of unhappy associations with boring dishes that can barely be called dishes.
This book raises the bar for pulses of various kinds, and not only provides recipes (180 of them) but also guidelines on principles, tips and tricks, what works and what doesn’t, what makes things better or worse, perfect partners, sprouting, and more.
The recipes themselves are not all vegan, nor even all vegetarian, but the beans are the star throughout. For those who are vegan or vegetarian, it’s easy to make substitutions, not least of all because the author is generous with “try this instead of that” and “consider also” suggestions, to help us tailor each dish to our personal preferences, and even the desired vibe of a given meal.
The dishes are neither overly simplistic (it’s not a student survival cookbook, by any means) nor overly complicated; rather, enough is done to make each dish invitingly tasty, and nothing extraneous or pretentious is added for the sake of being fancy. This is about delicious home cooking, nothing more nor less.
If the book has a weakness, it’s that visual learners will feel the absence of pictures for many recipes. But, the text is clear, the instructions are easy to follow, and a photo for each dish would probably have doubled the cost of the book, at least, while halving the number of recipes.
Bottom line: if you’d like to get more beans and other pulses in your diet, but are unsure how to make it exciting, this is an excellent option.
Click here to check out Pulse, and expand your kitchen repertoire!
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Getting COMFY – by Jordan Gross
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It’s easy to see how good “morning people” seem to have it; it’s harder, it seems, to become one.
And, if we’re forced by circumstance to be the morning person we’re not? We all-too-easily find ourselves greeting each coming day without the joy that, in an ideal world, we might.
So, is it possible to learn this power? Jordan Gross has it mapped out for it us…
The “COMFY” of the title is indeed an acronym, and it stands for:
- Calm
- Openness
- Movement
- Funny
- You
There’s a chapter explaining each in detail, and they’re bookended with other chapters explaining more about the whys and the hows.
As you might expect, the key to a good morning starts the night before, but there’s also a formula to follow. Of course, you can change it up, mix and match if you like… but this book provides a base framework to build from, which is something that can make a huge difference!
Bottom line: it’s a highly enjoyable book to read, and also provides genuine powerful help to bring us the brighter happier mornings we deserve—the set-up to the perfect day!
Click here to check out “Getting COMFY” and perk up your mornings—you deserve it!
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Does intermittent fasting increase or decrease our risk of cancer?
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Research over the years has suggested intermittent fasting has the potential to improve our health and reduce the likelihood of developing cancer.
So what should we make of a new study in mice suggesting fasting increases the risk of cancer?
Stock-Asso/Shutterstock What is intermittent fasting?
Intermittent fasting means switching between times of eating and not eating. Unlike traditional diets that focus on what to eat, this approach focuses on when to eat.
There are lots of commonly used intermittent fasting schedules. The 16/8 plan means you only eat within an eight-hour window, then fast for the remaining 16 hours. Another popular option is the 5:2 diet, where you eat normally for five days then restrict calories for two days.
In Australia, poor diet contributes to 7% of all cases of disease, including coronary heart disease, stroke, type 2 diabetes, and cancers of the bowel and lung. Globally, poor diet is linked to 22% of deaths in adults over the age of 25.
Intermittent fasting has gained a lot of attention in recent years for its potential health benefits. Fasting influences metabolism, which is how your body processes food and energy. It can affect how the body absorbs nutrients from food and burns energy from sugar and fat.
What did the new study find?
The new study, published in Nature, found when mice ate again after fasting, their gut stem cells, which help repair the intestine, became more active. The stem cells were better at regenerating compared with those of mice who were either totally fasting or eating normally.
This suggests the body might be better at healing itself when eating after fasting.
However, this could also have a downside. If there are genetic mutations present, the burst of stem cell-driven regeneration after eating again might make it easier for cancer to develop.
Polyamines – small molecules important for cell growth – drive this regeneration after refeeding. These polyamines can be produced by the body, influenced by diet, or come from gut bacteria.
The findings suggest that while fasting and refeeding can improve stem cell function and regeneration, there might be a tradeoff with an increased risk of cancer, especially if fasting and refeeding cycles are repeated over time.
While this has been shown in mice, the link between intermittent fasting and cancer risk in humans is more complicated and not yet fully understood.
What has other research found?
Studies in animals have found intermittent fasting can help with weight loss, improve blood pressure and blood sugar levels, and subsequently reduce the risks of diabetes and heart disease.
Research in humans suggests intermittent fasting can reduce body weight, improve metabolic health, reduce inflammation, and enhance cellular repair processes, which remove damaged cells that could potentially turn cancerous.
However, other studies warn that the benefits of intermittent fasting are the same as what can be achieved through calorie restriction, and that there isn’t enough evidence to confirm it reduces cancer risk in humans.
What about in people with cancer?
In studies of people who have cancer, fasting has been reported to protect against the side effects of chemotherapy and improve the effectiveness of cancer treatments, while decreasing damage to healthy cells.
Prolonged fasting in some patients who have cancer has been shown to be safe and may potentially be able to decrease tumour growth.
On the other hand, some experts advise caution. Studies in mice show intermittent fasting could weaken the immune system and make the body less able to fight infection, potentially leading to worse health outcomes in people who are unwell. However, there is currently no evidence that fasting increases the risk of bacterial infections in humans.
So is it OK to try intermittent fasting?
The current view on intermittent fasting is that it can be beneficial, but experts agree more research is needed. Short-term benefits such as weight loss and better overall health are well supported. But we don’t fully understand the long-term effects, especially when it comes to cancer risk and other immune-related issues.
Since there are many different methods of intermittent fasting and people react to them differently, it’s hard to give advice that works for everyone. And because most people who participated in the studies were overweight, or had diabetes or other health problems, we don’t know how the results apply to the broader population.
For healthy people, intermittent fasting is generally considered safe. But it’s not suitable for everyone, particularly those with certain medical conditions, pregnant or breastfeeding women, and people with a history of eating disorders. So consult your health-care provider before starting any fasting program.
Amali Cooray, PhD Candidate in Genetic Engineering and Cancer, WEHI (Walter and Eliza Hall Institute of Medical Research)
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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What’s Your Personal Life Expectancy?
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Tick Tock… Goes the Death Clock?
This fun little test will ask a few questions about you and your lifestyle, and then make a prediction of your personal life expectancy, based on global statistics from the World Health Organisation.
And then the countdown starts… Literally, it generates a clock for you to see your life-seconds ticking away—this may or may not delight you, but it sure is a curiosity.
Their “Letters” page has a lot of reactions from people who just got their results (spoiler: people’s perspectives on life vary a lot)
Who mostly uses this service? According to their stats page, it’s mostly curious under-45s, with gradually less interest in knowing about it from 45 onwards… until the age of 70, when suddenly everyone wants to know about it again!
So Is It Possible To Pause The Clock On Aging? – Q&A Spotlight Interview
Life extension is sometimes viewed as the domain of the super-rich, and with less than half of Millennials (and almost none of Gen-Z) having retirement plans, often those of us who aren’t super-rich have more mundane (and immediate!) goals than living to 120.
And yet…
Middle class and working class life-extensionists do exist, even if not garnering the same media attention. We think that’s strange—after all, while the whimsies of the super-rich may be entertaining to read about, it’s not nearly as applicable to most people as more relatable stories:
- The twenty-something who gives up smoking and adds (healthier!) years to their life
- The thirty-something who adopts a plant-based diet and is less likely to die of heart disease
- The forty-something who stops drinking, and avoids health conditions and mishaps alike
- The fifty-something who reconsiders their health plan in light of their changing body
- The sixty-something who takes up yoga, or chess, or salsa dancing
- The seventy-something who gets asked what their secret is
- …and so on
But these are ideas, textbook examples. What if we make it more personal?
We interviewed 10 Almonds subscriber and longevity enthusiast Anastasia S., and here’s what she had to say:
Q: What does life extension mean to you, in your life?
A: To me, the key is healthy life extension. People often joke “I don’t want to live longer; the last years are the worst!” but they’re missing the point that after a certain age, those difficulties are coming whether they come at 50 or 70 or 90. Personally, I’d rather keep them at bay if I can.
Q: How do you do that?
A: Firstly, which won’t be a shock: good diet and exercise. Those two things are possibly the biggest active influences on my longevity. I’m vegan, which I don’t think is outright necessary for good health but done right, it can certainly be good. In this house we eat a lot of whole grains, beans, lentils, vegetables in general, nuts too. As for exercise, I do 30–60 minutes of Pilates daily; it’s nothing fancy and it’s just me in my pajamas at home, but it keeps me strong and fit and supple. I also walk everywhere; I don’t even own a car. Beyond that… I don’t drink or smoke (probably the biggest passive influences on my longevity, i.e., things that aren’t there to make it shorter), and I try to take my sleep seriously, making sure to schedule enough time and prepare properly for it.
Q: Take your sleep seriously? How so?
A: Good “sleep hygiene” as some call it—I schedule a little wind-down time before sleep, with no glaring screens or main lights, making a space between my busy day and restful sleep, kicking anything requiring brainpower to the morning, and making a conscious choice not to think more about those things in the meantime. I take care to make my sleeping environment as conducive as possible to good sleep too; I have a good mattress and pillows, I make sure the temperature is cool but cosy. I have a pot of herbal tea on my bedside table—I hydrate a lot.
Q: Do you take any supplements?
A: I do! They’re mostly quite general though, just “covering my bases”, so to speak. I take a daily nootropic stack (a collection of supplements specifically for brain health), too. I buy them in bulk, so they don’t cost so much.
Q: This seems quite a healthy lifestyle! Do you have any vices at all?
A: I definitely drink more coffee than I probably should! But hey, nobody’s perfect. I do love coffee, though, and as vices go, it’s probably not too bad.
Q: How’s it all working out for you? Do you feel younger?
A: I’m 38 and sometimes I feel like a teenager; sometimes I feel like an old lady. But the latter is usually for social reasons, not health-related reasons. I do have streaks of gray in my hair though, and I love that! If people don’t notice my grays, then they often think I’m in my 20s, rather than pushing 40. A little while back, I was stopped in the street by someone wanting to sell me a change of household utilities provider, then she stopped herself mid-sentence and said “Oh but wait, you look a bit too young, never mind”. Most general metrics of health would put me in my 20s.
Q: That’s interesting that you love your gray hairs, for someone who wants to stay young; is it an exception?
A: It’s more that I want to minimize the problems that come with age, and not everything’s a problem. Gray hairs are cool; joint pain, not so much. A long life rich with experiences is cool; memory loss, not so much. So, I try to keep healthy, and wear my years as best I can.
Q: Sounds good to us; good luck with it!
A: Thank you; I do my best!
Here at 10 Almonds, we love featuring what our readers are doing to improve their health; if you’re willing to be featured in our newsletter, let us know by replying to this email (where an actual human will read it, we promise!)
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Beating Toxic Positivity
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How To Get Your Brain On A More Positive Track (Without Toxic Positivity)
There have been many studies done regards optimism and health, and they generally come to the same conclusion: optimism is simply good for the health.
Here’s an example we’ve mentioned before, but it’s a good introduction to today’s main feature. It’s a longitudinal study, and it followed 121,700 women (what a sample size!) for eight years. It controlled for all kinds of other lifestyle factors (especially smoking, drinking, diet, and exercise habits, as well as pre-existing medical conditions), so this wasn’t a case of “people who are healthy are more optimistic as results. And, in the researchers’ own words…
❝We found strong and statistically significant associations of increasing levels of optimism with decreasing risks of mortality, including mortality due each major cause of death, such as cancer, heart disease, stroke, respiratory disease, and infection. Importantly, findings were maintained after close control for potential confounding factors, including sociodemographic characteristics and depression❞
Read: Optimism and Cause-Specific Mortality: A Prospective Cohort Study
And yet, toxic positivity can cause as many problems as it tries to fix.
What is toxic positivity?
- Toxic positivity is the well-meaning friend who says “I’m sure it’ll be ok” when you know full well it definitely will not.
- Toxic positivity is the allegorical frog-in-a-pan saying that the temperature rises due to climate change are gradual, so they’re nothing to worry about
- Toxic positivity is thinking that “good vibes” will outperform chemotherapy
Sometimes, a dose of realism is needed. So, can we do that and maintain a positive attitude?
The answer is: somewhat, yes! But first, a quick check-in:
❝I’m not a pessimist; I’m a realist!❞
~ every pessimist ever
To believe self-reports, the world is divided between optimists and realists. But how does your outlook measure up, really?
While like most free online tests, this is offered “as-is” with the usual caveats about not being a clinical diagnostic tool, this one actually has a fair amount of scientific weight behind it:
❝Empirical testing has indicated the validity of the Optimism Pessimism Instrument as published in the scientific journal Current Psychology: Research and Reviews.
The IDRlabs Optimism/Pessimism Test (IDR-OPT) was developed by IDRlabs. The IDR-OPT is based on the Optimism/Pessimism Instrument (OPI) developed by Dr. William Dember, Dr. Stephanie Martin, Dr. Mary Hummer, Dr. Steven Howe, and Dr. Richard Melton, at the University of Cincinnati.❞
Take This Short (1–2 mins) Test
How did you score? And what could you do to improve on that score?
First, it’s said that with a big enough “why”, one can overcome any “how”. So…
An attitude of gratitude
We know, we know, it’s very Oprah Winfrey. But also, it works. Take the time, ideally daily, to quickly list 3–5 things for which you feel grateful. Great or small, it can be anything from your spouse to your cup of coffee, provided you feel fortunate to have it.
How this works: our brains easily get stuck in loops, so it can help to nudge them into a more positive loop.
What about when we are treated unfairly? Are we supposed to be grateful?
Sometimes, our less positive emotions are necessary, to protect us and/or those around us, and to provide a motivational force. We can still maintain a positive attitude by noting the bad thing and some good, but watch out! Notice the difference:
- “How dare they take our healthcare away, but at least I’m not sick right now” (lasting impression: no action required)
- “At least I’m not sick right now, but how dare they take our healthcare away!” (lasting impression: action required)
It’s a well-known idea in neurolinguistic programming, that “but” negates whatever goes before it (think of “I’m sorry but”, or “I’m not racist but”, etc), so use it consciously and wisely, or else simply use “and” instead.
Cognitive reframing: problem, or opportunity?
Most problems can be opportunities, even if the problems themselves genuinely suck and are not intrinsically positive. A way of leveraging this can be replacing “I have to…” with “I get to…”.
This not only can reframe problems as opportunities, but also calls back to the gratitude idea.
- Instead of “I have to get my mammogram / prostate exam” (not generally considered fun activities), “I get to have the peace of mind of being free from cancer / I get to have the forewarning that will keep me safe”.
- Instead of “I have to go to work”, “I get to go to work” (many wish they were in your shoes!)
- Instead of “I have to rest”, “I get to rest”
When things are truly not great
Whether due to internal or external factors, whether you can control something or not, sometimes things are truly not great. The trick here is that in most contexts, one can replace negative talk, with verbally positive talk, no matter how dripping with scathing irony. You’ll still get to express the idea you wanted, but your brain will feel more positive and you’ll be in a positive loop rather than a negative one.
This, by the way, is the inverse of talking to a dog with a tone of voice that is completely the opposite of the meaning of the words. Whereas the dog will interpret the tone only, your brain will interpret the words only.
- You just spilled your drink over yourself at a social function? “Aren’t I the very model of grace and charm?”
- You made a costly mistake in your business dealings? “I am such a genius”
- You just got a diagnosis of a terrible disease? “Well, this is fabulous”
None of these things involve burying your head in the sand, in the manner of toxic positivity. You’ll still learn from your business mistake and correct it as best you can, or take appropriate action regards the disease, for example.
You’ll just feel better while you do it, and not get caught into a negative spiral that ruins your day, or even your next few months.
Sympathetic/Somatic Therapy:
Lastly, an easy one, leveraging the body’s tendency to get in sync with things around us:
For when you do just need a mood change, have an uplifting playlist available at the touch of a button. It’s hard to be consumed with counterproductive feelings to the tune of “Walking on Sunshine”!
Bonus tip: consider having the playlist start with something that is lyrically negative while musically upbeat. That way, your brain won’t resist it as antithetical to your mood, and by the second track, you’ll already be on your way to a better mood.
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Easing Lower Back Pain
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Lower back pain often originates from an unexpected culprit: your pelvis. Similar to how your psoas can contribute to lower back pain, when your pelvis tilts forward due to tight hip flexors, it can misalign your spine, leading to discomfort and pain. As WeShape shows us in the below video, one simple stretch can help realign your pelvis and significantly ease lower back pain.
Why Your Pelvis Matters
Sitting for long periods causes your hip flexors to shorten, leading to an anterior pelvic tilt. This forward tilt puts pressure on your spine and SI joint, causing pain and discomfort in the lower back. To help resolve this, you can work on correcting your pelvic alignment, helping to significantly reduce this pressure and alleviate related pain. And no, this doesn’t require any spinal cord stimulation.
Easy Variations for All
A lot of you recognise the stretch in this video; it’s quite a well-known kneeling stretch. But, unlike other guides, WeShape also provides a fantastic variation for those who aren’t mobile enough for the kneeling variation
So, if you can’t comfortably get down on the ground, WeShape outlines a brilliant standing variation. So, regardless of your mobility, there’s an option for you!
See both variations here:
Excited to reduce your lower back pain? We hope so! Let us know if you have any tips that you’d like to share with us.
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