Cold Weather Health Risks
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Many Are Cold; Few Are Frozen
Many of those of us in the Northern Hemisphere are getting hit with a cold spell around now. How severe that may be depends on more precisely where we are, but it’s affecting a lot of people. So, with apologies to our readers in Australia, we’re going to do a special on that today.
Acute cold is, for most people, good for the health:
A Cold Shower A Day Keeps The Doctor Away?
Persistent cold, not so much. Let’s look at the risks, and what can be done about them…
Hypothermia
It kills. Don’t let it kill you or your loved ones.
And, this is really important: it doesn’t care whether you’re on a mountain or not.
In other words: a lot of people understand (correctly!) that hypothermia is a big risk to hikers, climbers, and the like. But if the heating goes out in your house and the temperature drops for long enough before the heating is fixed, you can get hypothermia there too just the same if you’re not careful.
How cold is too cold? It doesn’t even have to be sub-zero. According to the CDC, temperatures of 4℃ (40℉) can be low enough to cause hypothermia if other factors combine:
CDC | Prevent Hypothermia & Frostbite ← you can also see the list of symptoms to watch out for, there!
Skin health
Not generally an existential risk, but we may as well stay healthy as not!
Cold air often means dry air, so use a moisturizer with an oil base (if you don’t care for fancy beauty products, ordinary coconut oil is top-tier).
Bonus if you do it after a warming bath/shower!
Heart health
Cold has a vasconstricting effect; that is to say, it causes the body’s vasculature to shrink, increasing localized blood pressure. If it’s a cold shower as above, that can be very invigorating. If it’s a week of sub-zero temperatures, it can become a problem.
❝Shoveling a little snow off your sidewalk may not seem like hard work. However, […] combined with the fact that the exposure to cold air can constrict blood vessels throughout the body, you’re asking your heart to do a lot more work in conditions that are diminishing the heart’s ability to function at its best.❞
Source: Snow shoveling, cold temperatures combine for perfect storm of heart health hazards
If you have a heart condition, please do not shovel snow. Let someone else do it, or stay put.
And if you are normally able to exercise safely? Unless you’re sure your heart is in good order, exercising in the warmth, not the cold, seems to be the best bet.
See also: Heart Attack: His & Hers (Be Prepared!) ← can you remember which symptoms are for which sex? If not, now’s a good time to refresh that knowledge.
Immune health
We recently discussed how cold weather indirectly increases the risk of respiratory viral infection:
The Cold Truth About Respiratory Infections
So, now’s the time to be extra on-guard about that.
See also: Beyond Supplements: The Real Immune-Boosters!
Balance
Icy weather increases the risk of falling. If you think “having a fall” is something that happens to other/older people, please remember that there’s a first time for everything. Some tips:
- Walk across icy patches with small steps in a flat-footed fashion like a penguin.
- It may not be glamorous, but neither is going A-over-T and breaking (or even just spraining) things.
- Use a handrail if available, even if you don’t think you need to.
You can also check out our previous article about falling (avoiding falling, minimizing the damage of falling, etc):
Fall Special: Some Fall-Themed Advice
Take care!
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New research suggests intermittent fasting increases the risk of dying from heart disease. But the evidence is mixed
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Kaitlin Day, RMIT University and Sharayah Carter, RMIT University
Intermittent fasting has gained popularity in recent years as a dietary approach with potential health benefits. So you might have been surprised to see headlines last week suggesting the practice could increase a person’s risk of death from heart disease.
The news stories were based on recent research which found a link between time-restricted eating, a form of intermittent fasting, and an increased risk of death from cardiovascular disease, or heart disease.
So what can we make of these findings? And how do they measure up with what else we know about intermittent fasting and heart disease?
The study in question
The research was presented as a scientific poster at an American Heart Association conference last week. The full study hasn’t yet been published in a peer-reviewed journal.
The researchers used data from the National Health and Nutrition Examination Survey (NHANES), a long-running survey that collects information from a large number of people in the United States.
This type of research, known as observational research, involves analysing large groups of people to identify relationships between lifestyle factors and disease. The study covered a 15-year period.
It showed people who ate their meals within an eight-hour window faced a 91% increased risk of dying from heart disease compared to those spreading their meals over 12 to 16 hours. When we look more closely at the data, it suggests 7.5% of those who ate within eight hours died from heart disease during the study, compared to 3.6% of those who ate across 12 to 16 hours.
We don’t know if the authors controlled for other factors that can influence health, such as body weight, medication use or diet quality. It’s likely some of these questions will be answered once the full details of the study are published.
It’s also worth noting that participants may have eaten during a shorter window for a range of reasons – not necessarily because they were intentionally following a time-restricted diet. For example, they may have had a poor appetite due to illness, which could have also influenced the results.
Other research
Although this research may have a number of limitations, its findings aren’t entirely unique. They align with several other published studies using the NHANES data set.
For example, one study showed eating over a longer period of time reduced the risk of death from heart disease by 64% in people with heart failure.
Another study in people with diabetes showed those who ate more frequently had a lower risk of death from heart disease.
A recent study found an overnight fast shorter than ten hours and longer than 14 hours increased the risk dying from of heart disease. This suggests too short a fast could also be a problem.
But I thought intermittent fasting was healthy?
There are conflicting results about intermittent fasting in the scientific literature, partly due to the different types of intermittent fasting.
There’s time restricted eating, which limits eating to a period of time each day, and which the current study looks at. There are also different patterns of fast and feed days, such as the well-known 5:2 diet, where on fast days people generally consume about 25% of their energy needs, while on feed days there is no restriction on food intake.
Despite these different fasting patterns, systematic reviews of randomised controlled trials (RCTs) consistently demonstrate benefits for intermittent fasting in terms of weight loss and heart disease risk factors (for example, blood pressure and cholesterol levels).
RCTs indicate intermittent fasting yields comparable improvements in these areas to other dietary interventions, such as daily moderate energy restriction.
So why do we see such different results?
RCTs directly compare two conditions, such as intermittent fasting versus daily energy restriction, and control for a range of factors that could affect outcomes. So they offer insights into causal relationships we can’t get through observational studies alone.
However, they often focus on specific groups and short-term outcomes. On average, these studies follow participants for around 12 months, leaving long-term effects unknown.
While observational research provides valuable insights into population-level trends over longer periods, it relies on self-reporting and cannot demonstrate cause and effect.
Relying on people to accurately report their own eating habits is tricky, as they may have difficulty remembering what and when they ate. This is a long-standing issue in observational studies and makes relying only on these types of studies to help us understand the relationship between diet and disease challenging.
It’s likely the relationship between eating timing and health is more complex than simply eating more or less regularly. Our bodies are controlled by a group of internal clocks (our circadian rhythm), and when our behaviour doesn’t align with these clocks, such as when we eat at unusual times, our bodies can have trouble managing this.
So, is intermittent fasting safe?
There’s no simple answer to this question. RCTs have shown it appears a safe option for weight loss in the short term.
However, people in the NHANES dataset who eat within a limited period of the day appear to be at higher risk of dying from heart disease. Of course, many other factors could be causing them to eat in this way, and influence the results.
When faced with conflicting data, it’s generally agreed among scientists that RCTs provide a higher level of evidence. There are too many unknowns to accept the conclusions of an epidemiological study like this one without asking questions. Unsurprisingly, it has been subject to criticism.
That said, to gain a better understanding of the long-term safety of intermittent fasting, we need to be able follow up individuals in these RCTs over five or ten years.
In the meantime, if you’re interested in trying intermittent fasting, you should speak to a health professional first.
Kaitlin Day, Lecturer in Human Nutrition, RMIT University and Sharayah Carter, Lecturer Nutrition and Dietetics, RMIT University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Scheduling Tips for Overrunning Tasks
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Your Questions, Our Answers!
Q: Often I schedule time for things, but the task takes longer than I think, or multiplies while I’m doing it, and then my schedule gets thrown out. Any ideas?
A: A relatable struggle! Happily, there are remedies:
- Does the task really absolutely need to be finished today? If not, just continue it in scheduled timeslots until it’s completed.
- Some tasks do indeed need to be finished today (hi, writer of a daily newsletter here!), so it can be useful to have an idea of how long things really take, in advance. While new tasks can catch us unawares, recurring or similar-to-previous tasks can be estimated based on how long they took previously. For this reason, we recommend doing a time audit every now and again, to see how you really use your time.
- A great resource that you should include in your schedule is a “spare” timeslot, ideally at least one per day. Call it a “buffer” or a “backup” or whatever (in my schedule it’s labelled “discretionary”), but the basic idea is that it’s a scheduled timeslot with nothing scheduled in it, and it works as an “overflow” catch-all.
Additionally:
- You can usually cut down the time it takes you to do tasks by setting “Deep Work” rules for yourself. For example: cut out distractions, single-task, work in for example 25-minute bursts with 5-minute breaks, etc
- You can also usually cut down the time it takes you to do tasks by making sure you’re prepared for them. Not just task-specific preparation, either! A clear head on, plenty of energy, the resources you’ll need (including refreshments!) to hand, etc can make a huge difference to efficiency.
See Also: Time Optimism and the Planning Fallacy
Do you have a question you’d like to see answered here? Hit reply or use the feedback widget at the bottom; we’d love to hear from you!
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Delay Ageing – by Dr. Colin Rose
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Note: the title is spelled that way because it is British English. We generally write in US English here at 10almonds, but we’ll first quote directly from Dr. Rose as written:
❝I have written Delay Ageing because there is some very important recent University research on ageing and age related illness that deserves to be made accessible to a general audience.❞
What is this research? Well, there’s quite a lot over its 300-odd pages (exact number depends on the edition and whether we count end matter), and most of it is tweaks and refinements on things with which you’ll probably be at least brushingly familiar if you’re a regular 10almonds reader.
Dr. Rose addresses the nine hallmarks of aging, of which there are ten, ranging from such things as “telomeres get shorter” and “DNA accumulates damage”, to “stem cells become exhausted” and “cells fail to communicate properly”, and asks the question “what if we were to target all these things simultaneously?”.
Rather than going for drugs on drugs on drugs (half of them to deal with undesired side effects of the previous ones), Dr. Cole leaves no stone unturned to find lifestyle interventions that will improve each of these, even if just a little. Because, all those “little” improvements add up and even compound, and on the flipside, mean that factors of aging aren’t adding up and compounding so much or so quickly anymore.
The rather broad umbrella of “lifestyle interventions” obviously includes food under its auspices, and with it, nutraceuticals. So to give one example, if you’re taking a fisetin supplement (a natural senolytic agent), you’ll find science vindicating that here. And much more.
The style is… Less pop-science and more “textbook written for laypersons”, and you may be thinking “isn’t that the same?” and the difference is that the textbook has a lot less polish and finesse, but often more precise information.
Bottom line: if you’d like to combat aging on 10 different fronts with easily implementable lifestyle interventions, and know exactly what is doing what and how, then this is the book for you.
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Self-Care That’s Not Just Self-Indulgence
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Self-Care That’s Not Just Self-Indulgence
Self-care is often seen as an excuse for self-indulgence. Worse, it’s often used as an excuse for self-indulgence—in ways that can end up making us feel worse.
It’s a bit like dietary “cheat days”. If your diet needs cheat days, your diet probably isn’t right for you!
How to recognize the difference between self-care and self-indulgence?
Statistically, the majority of our subscribers are parents (whose children are now mostly grown up, but still, the point is that parenting experience has been gleaned), and/or are or have been caregivers of some form or other.
When a small child is ill, we (hopefully!) look after them carefully:
- We don’t expect too much of them, but…
- …we do expect them to adhere to things consistent with their recovery.
Critically: an important part of self-care is that it actually should be care.
Let’s spell something out: neglect is not care!
How this works for physical and mental health
If you overdo it in physical exercise, it’s right and correct to take a break to recover, and during that time, do things that will hasten one’s recovery. For example:
Overdone It? How To Speed Up Recovery After Exercise
But it’s well-known that if you just do nothing, your condition will likely deteriorate. Also, “a break to recover” is going to be as short as is necessary to recover. Then you’ll ease back into exercise, but you will get back to it.
For mental health it’s just the same. If we for whatever reason need to take a step back, it’s right and correct to do take a break to recover, and during that time, do things that will hasten one’s recovery.
Sometimes, if for example it’s just a case of burnout, rest is the best medicine, and even rest can be an active process. See for example:
How To Rest More Efficiently (Yes, Really)
So the question to ask, when it comes to self-care vs self-indulgence, is:
“Is this activity helping me to get better?”
Some examples:
Probably not great self-care activities:
- Oversleeping (unless you were sleep-deprived, in which case, it’s better to get an earlier night than a later morning, if possible)
- Overeating (comfort-eating is a thing, but your actual problems will still be there)
- Mindless activities (mindless scrolling, TV-watching, game-playing, etc)
Probably better self-care activities:
- Enjoyable physical activity (whatever that may be for you)
- Preparing your favorite food, and then enjoying it mindfully
- Engaging in a personal project that might not be that important, but it’s fulfilling to you (hobbies etc can fall into this category)
- Scheduling some time, and committing some resources, to tackling whatever problem(s) you are facing that’s prompting you to need this self-care.
- Doing the tasks you want to hide away from, but making them fun.
What’s your go-to self-care? We love to hear from you, so feel free to hit “reply” to this email, or use the handy feedback form at the bottom!
Don’t Forget…
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How to keep your teeth young
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How to keep your teeth young
The association between aging and teeth is so well-established that it’s entered popular idiom, “too long in the tooth”, and when it comes to visual representations, false teeth are well-associated with old age.
And yet, avoiding such outcomes does not get anywhere near so much attention as, say, avoiding wrinkles or hair loss.
At 10almonds, we’ve covered general dental health before, in a three-part series:
- Toothpastes & Mouthwashes: Which Help And Which Harm?
- Flossing, Better (And Easier!)
- Less Common Oral Hygiene Options
Today, we’re going to be looking specifically at keeping our teeth young. What if you have lost your teeth already? Well, gum health remains important, and it’s foundational for everyone, so…
Look after your gums first and last
Hollywood’s most “perfect” whites would be nothing without the gums holding them in place. So, set aside the cosmetic whitening products that often harm gums (anything containing bleach / hydrogen peroxide, is generally a bad idea), andinstead focus on your gums.
As for avoiding gum disease (periodontitis)?
❝In conclusion, periodontitis might enhance the association of biological aging with all-cause mortality in middle-aged and older adults.
Hence, maintaining and enhancing periodontal health is expected to become an intervention to slow aging and extend life span.❞
Source: Does Periodontitis Affect the Association of Biological Aging with Mortality?
Ways to look after gum health include the obvious “floss” and “brush often” and “use fluoride toothpaste”, along with other options we covered in our “Less Common Oral Hygiene Options” article above.
Also important: don’t smoke. It is bad for everything, and this is no exception.
We expect we probably don’t have many subscribers who smoke, but if you do, please consider making quitting a priority.
See also: Smoking, Gum Disease, and Tooth Loss
Consider supplementing with collagen
Everyone’s all about the calcium and vitamin D for bones (and teeth), but a large part of the mass of both is actually collagen. And unlike calcium, which most people not living in a food desert get plenty of, or vitamin D, which is one of the most popular supplements around, collagen is something that gets depleted as we get older. We’ve written about its importance for bones:
We Are Such Stuff As Fish Are Made Of—Collagen’s benefits are more than skin deep
And as for its role in combatting gum disease and tooth loss:
Nanoscale Dynamics of Streptococcal Adhesion to AGE-Modified Collagen
By the way, that “AGE” there isn’t about chronological age; it’s about advanced glycation end-products. Those are also something you can and should avoid:
A different kind of “spit and polish”
We imagine you have the “polishing” part in hand; that’s tooth-brushing, of course. But spit?
Saliva is hugely important for our oral health, but it’s not something most of us think about a lot. For example, you might not have known (or might have known but not thought much about) that many common medications affect our saliva, including many blood pressure medications and antidepressants:
Impact of ageing and drug consumption on oral health
Because there are so many possibilities, this is the kind of thing to check with your pharmacist or doctor about. But as a rule, if you take a medication whose side-effects include “dry mouth”, this might be you.
Here’s a really useful (academic) article that covers what drugs cause this, how to diagnose it, and what can be done about it:
Hyposalivation in Elderly Patients
If something’s difficult, find a way to make it easier
Sometimes, as we get older, some things that used to be easy, aren’t. We can lose strength, coordination, manual dexterity, memory, attention, and more. Obviously, we try not to, and do what we can to keep ourselves in good health.
But, if you do have some disability that makes for example brushing and/or flossing difficult to do consistently and/or well, consider talking to your doctor to see if there are assistive devices that can help, or some other kind of support that could allow you to do what you need to.
There’s never any shame in getting help if we need it.
Take care!
Don’t Forget…
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Stop Overthinking – by Nick Trenton
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This book is exactly what it says on the tin. We are given twenty-three techniques to relieve stress, stop negative spirals, declutter your mind, and focus on the present, in the calm pursuit of good mental health and productivity.
The techniques are things like the RAIN technique above, so if you liked that, you’ll love this. Being a book rather than a newsletter, it also takes the liberty of going into much more detail—hence the 200 pages for 23 techniques. Unlike many books, it’s not packed in fluff either. It’s that perfect combination of “to the point” and “very readable”.
If you’ve read this far into the review and you’re of two minds about whether or not this book could be useful to you, then you just might be overthinking it
Don’t Forget…
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Learn to Age Gracefully
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