Do We Need Sunscreen In Winter, Really?
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It’s Q&A Day at 10almonds!
Have a question or a request? We love to hear from you!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small 😎
❝I keep seeing advice that we shoudl wear sunscreen out in winter even if it’s not hot or sunny, but is there actually any real benefit to this?❞
Short answer: yes (but it’s indeed not as critical as it is during summer’s hot/sunny days)
Longer answer: first, let’s examine the physics of summer vs winter when it comes to the sun…
In summer (assuming we live far enough from the equator to have this kind of seasonal variation), the part of the planet where we live is tilted more towards the sun. This makes it closer, and more importantly, it’s more directly overhead during the day. The difference in distance through space isn’t as big a deal as the difference in distance through the atmosphere. When the sun is more directly overhead, its rays have a shorter path through our atmosphere, and thus less chance of being blocked by cloud cover / refracted elsewhere / bounced back off into space before it even gets that far.
In winter, the opposite of all that is true.
Morning/evening also somewhat replicate this compared to midday, because the sun being lower in the sky has a similar effect to seasonal variation causing it to be less directly overhead.
For this reason, even though visually the sun may be just as bright on a winter morning as it is on a summer midday, the rays have been filtered very differently by the time they get to us.
This is one reason why you’re much less likely to get sunburned in the winter, compared to the summer (others include the actual temperature difference, your likely better hydration, and your likely more modest attire protecting you).
However…
The reason it is advisable to wear sunscreen in winter is not generally about sunburn, and is rather more about long-term cumulative skin damage (ranging from accelerated aging to cancer) caused by the UV rays—specifically, mostly UVA rays, since UVB rays (with their higher energy but shorter wavelength) have nearly all been blocked by the atmosphere.
Here’s a good explainer of that from the American Cancer Society:
UV (Ultraviolet) Radiation and Cancer Risk
👆 this may seem like a no-brainer, but there’s a lot explained here that demystifies a lot of things, covering ionizing vs non-ionizing radiation, x-rays and gamma-rays, the very different kinds of cancer caused by different things, and what things are dangerous vs which there’s no need to worry about (so far as best current science can say, at least).
Consequently: yes, if you value your skin health and avoidance of cancer, wearing sunscreen when out even in the winter is a good idea. Especially if your phone’s weather app says the UV index is “moderate” or above, but even if it’s “low”, it doesn’t hurt to include it as part of your skincare routine.
But what if sunscreens are dangerous?
Firstly, not all sunscreens are created equal:
Learn more: Who Screens The Sunscreens?
Secondly: consider putting on a protective layer of moisturizer first, and then the sunscreen on top. Bear in mind, this is winter we’re talking about, so you’re probably not going out in a bikini, so this is likely a face-neck-hands job and you’re done.
What about vitamin D?
Humans evolved to have more or less melanin in our skin depending on where we lived, and white people evolved to wring the most vitamin D possible out of the meagre sun far from the equator. Black people’s greater melanin, on the other hand, offers some initial protection against the sun (but any resultant skin cancer is then more dangerous than it would be for white people if it does occur, so please do use sunscreen whatever your skintone).
Nowadays many people live in many places which may or may not be the places we evolved for, and so we have to take that into account when it comes to sun exposure.
Here’s a deeper dive into that, for those who want to learn:
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Pear vs Prickly Pear – Which is Healthier?
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Our Verdict
When comparing pear to prickly pear, we picked the prickly.
Why?
Both of these fruits are fine and worthy choices, but the prickly pear wins out in nutritional density.
Looking at the macros to start with, the prickly pear is higher in fiber and lower in carbs, resulting in a much lower glycemic index. However, non-prickly pears are already low GI, so this is not a huge matter. Whether it’s pear’s GI of 38 or prickly pear’s GI of 7, you’re unlikely to experience a glucose spike.
In the category of vitamins, pear has a little more of vitamins B5, B9, E, K, and choline, but the margins are tiny. On the other hand, prickly pear has more of vitamins A, B1, B2, B3, B6, and C, with much larger margins of difference (except vitamin B1; that’s still quite close). Even before taking margins of difference into account, this is a slight win for prickly pear.
When it comes to minerals, things are more pronounced; pear has more manganese, while prickly pear has more calcium, iron, magnesium, phosphorus, potassium, selenium, and zinc.
In short, both pears are great (so do enjoy the pair), but prickly pear is the clear winner where one must be declared.
Want to learn more?
You might like to read:
Apple vs Pear – Which is Healthier?
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What Would a Second Trump Presidency Look Like for Health Care?
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On the presidential campaign trail, former President Donald Trump is, once again, promising to repeal and replace the Affordable Care Act — a nebulous goal that became one of his administration’s splashiest policy failures.
“We’re going to fight for much better health care than Obamacare. Obamacare is a catastrophe,” Trump said at a campaign stop in Iowa on Jan. 6.
The perplexing revival of one of Trump’s most politically damaging crusades comes at a time when the Obama-era health law is even more popular and widely used than it was in 2017, when Trump and congressional Republicans proved unable to pass their own plan to replace it. That failed effort was a big part of why Republicans lost control of the House of Representatives in the 2018 midterms.
Despite repeated promises, Trump never presented his own Obamacare replacement. And much of what Trump’s administration actually accomplished in health care has been reversed by the Biden administration.
Still, Trump secured some significant policy changes that remain in place today, including efforts to bring more transparency to prices charged by hospitals and paid by health insurers.
Trying to predict Trump’s priorities in a second term is even more difficult given that he frequently changes his positions on issues, sometimes multiple times.
The Trump campaign did not respond to a request for comment.
Perhaps Trump’s biggest achievement is something he rarely talks about on the campaign trail. His administration’s “Operation Warp Speed” managed to create, test, and bring to market a covid-19 vaccine in less than a year, far faster than even the most optimistic predictions.
Many of Trump’s supporters, though, don’t support — and some even vehemently oppose — covid vaccines.
Here is a recap of Trump’s health care record:
Public Health
Trump’s pandemic response dominates his overall record on health care.
More than 400,000 Americans died from covid over Trump’s last year in office. His travel bans and other efforts to prevent the global spread of the virus were ineffective, his administration was slower than other countries’ governments to develop a diagnostic test, and he publicly clashed with his own government’s health officials over the response.
Ahead of the 2020 election, Trump resumed large rallies and other public campaign events that many public health experts regarded as reckless in the face of a highly contagious, deadly virus. He personally flouted public health guidance after contracting covid himself and ending up hospitalized.
At the same time, despite what many saw as a politicization of public health by the White House, Trump signed a massive covid relief bill (after first threatening to veto it). He also presided over some of the largest boosts for the National Institutes of Health’s budget since the turn of the century. And the mRNA-based vaccines Operation Warp Speed helped develop were an astounding scientific breakthrough credited with helping save millions of lives while laying the groundwork for future shots to fight other diseases including cancer.
Abortion
Trump’s biggest contribution to abortion policy was indirect: He appointed three Supreme Court justices, who were instrumental in overturning the constitutional right to an abortion.
During his 2024 campaign, Trump has been all over the place on the red-hot issue. Since the Supreme Court overturned Roe v. Wade in 2022, Trump has bemoaned the issue as politically bad for Republicans; criticized one of his rivals, Florida Gov. Ron DeSantis, for signing a six-week abortion ban; and vowed to broker a compromise with “both sides” on abortion, promising that “for the first time in 52 years, you’ll have an issue that we can put behind us.”
He has so far avoided spelling out how he’d do that, or whether he’d support a national abortion ban after any number of weeks.
More recently, however, Trump appears to have mended fences over his criticism of Florida’s six-week ban and more with key abortion opponents, whose support helped him get elected in 2016 — and whom he repaid with a long list of policy changes during his presidency.
Among the anti-abortion actions taken by the Trump administration were a reinstatement of the “Mexico City Policy” that bars giving federal funds to international organizations that support abortion rights; a regulation to bar Planned Parenthood and other organizations that provide abortions from the federal family planning program, Title X; regulatory changes designed to make it easier for health care providers and employers to decline to participate in activities that violate their religious and moral beliefs; and other changes that made it harder for NIH scientists to conduct research using fetal tissue from elective abortions.
All of those policies have since been overturned by the Biden administration.
Health Insurance
Unlike Trump’s policies on reproductive health, many of his administration’s moves related to health insurance still stand.
For example, in 2020, Trump signed into law the No Surprises Act, a bipartisan measure aimed at protecting patients from unexpected medical bills stemming from payment disputes between health care providers and insurers. The bill was included in the $900 billion covid relief package he opposed before signing, though Trump had expressed support for ending surprise medical bills.
His administration also pushed — over the vehement objections of health industry officials — price transparency regulations that require hospitals to post prices and insurers to provide estimated costs for procedures. Those requirements also remain in place, although hospitals in particular have been slow to comply.
Medicaid
While first-time candidate Trump vowed not to cut popular entitlement programs like Medicare, Medicaid, and Social Security, his administration did not stick to that promise. The Affordable Care Act repeal legislation Trump supported in 2017 would have imposed major cuts to Medicaid, and his Department of Health and Human Services later encouraged states to require Medicaid recipients to prove they work in order to receive health insurance.
Drug Prices
One of the issues the Trump administration was most active on was reducing the price of prescription drugs for consumers — a top priority for both Democratic and Republican voters. But many of those proposals were blocked by the courts.
One Trump-era plan that never took effect would have pegged the price of some expensive drugs covered by Medicare to prices in other countries. Another would have required drug companies to include prices in their television advertisements.
A regulation allowing states to import cheaper drugs from Canada did take effect, in November 2020. However, it took until January 2024 for the FDA, under Trump’s successor, to approve the first importation plan, from Florida. Canada has said it won’t allow exports that risk causing drug shortages in that country, leaving unclear whether the policy is workable.
Trump also signed into law measures allowing pharmacists to disclose to patients when the cash price of a drug is lower than the cost using their insurance. Previously pharmacists could be barred from doing so under their contracts with insurers and pharmacy benefit managers.
Veterans’ Health
Trump is credited by some advocates for overhauling Department of Veterans Affairs health care. However, while he did sign a major bill allowing veterans to obtain care outside VA facilities, White House officials also tried to scuttle passage of the spending needed to pay for the initiative.
Medical Freedom
Trump scored a big win for the libertarian wing of the Republican Party when he signed into law the “Right to Try Act,” intended to make it easier for patients with terminal diseases to access drugs or treatments not yet approved by the FDA.
But it is not clear how many patients have managed to obtain treatment using the law because it is aimed at the FDA, which has traditionally granted requests for “compassionate use” of not-yet-approved drugs anyway. The stumbling block, which the law does not address, is getting drug companies to release doses of medicines that are still being tested and may be in short supply.
Trump said in a Jan. 10 Fox News town hall that the law had “saved thousands and thousands” of lives. There’s no evidence for the claim.
KFF Health News is a national newsroom that produces in-depth journalism about health issues and is one of the core operating programs at KFF—an independent source of health policy research, polling, and journalism. Learn more about KFF.
Subscribe to KFF Health News’ free Morning Briefing.
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Beyond Guarding Against Dementia
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When Age’s Brain-Changes Come Knocking
This is Dr. Amy Friday. She’s a psychologist, specializing in geropsychology and neuropsychological assessments.
In other words, she helps people optimize their aging experience, particularly in the context of brain changes as we get older.
What does she want us to know?
First: be not afraid
Ominous first words, but the fact is, there’s a lot to find scary about the prospect of memory loss, dementia, and death.
However, as she points out:
- Death will come for us all sooner or later, barring technology as yet unknown
- Dementia can be avoided, or at least stalled, or at least worked around
- Memory loss, as per the above, can be avoided/stalled/managed
We’ve written a little on these topics too:
…or if the death is not yours:
As for avoiding dementia, the below-linked feature is about Alzheimer’s in particular (which accounts for more than half of all cases of dementia), but the advice goes for most of the other kinds too:
How To Reduce Your Alzheimer’s Risk
And finally, about memory loss specifically:
How To Boost Your Memory Immediately (Without Supplements)
this one is especially about cementing into one’s brain the kinds of memories that people most fear losing with age. People don’t worry about forgetting their PIN codes; they worry about forgetting their cherished memories with loved ones. So, if that’s important to you, do consider checking out this one!
What is that about managing or working around the symptoms?
If we’re missing a limb, we (usually) get a prosthetic, and/or learn how to operate without that limb.
If we’re missing sight or hearing, partially or fully, there are disability aids for those kinds of things too (glasses are a disability aid! Something being very common does not make it not a disability; you literally have less of an ability—in this case, the ability to see), and/or we learn how to operate with our different (or missing) sense.
Dr. Friday makes the case for this being the same with memory loss, dementia, and other age-related symptoms (reduced focus, increased mental fatigue, etc):
❝We are all screwed up. Here’s my flavor … what’s yours? This is a favorite saying of mine, because we ARE all screwed up in one way or another, and when we acknowledge it we can feel closer in our screwed-up-edness.
We are all experiencing “normal aging,” so that tip-of-the-tongue phenomenon that starts in our thirties and slowly gets worse is REAL. But what if you’re having more problems than normal aging? Is it time to throw in the towel and hide? I’m hoping that there is a group of people who say HELL NO to that idea.
Let’s use lessons from research and clinical practice to help all of us work around our weaknesses, and capitalize on our strengths. ❞
Examples of this might include:
- Writing down the things most important to you (a short list of information and/or statements that you feel define you and what matters most to you), so that you can read it later
- Making sure you have support (partner, family, friends, etc) who are on the same page about this topic—and thus will actually support you and advocate for you, instead of arguing about what is in your best interest without consulting you.
- Labelling stuff around the house, so that you get less confused about what is what and where it is
- Having a named go-to advocate that you can call / ask to be called, if you are in trouble somewhere and need help that you can rely on
- Getting a specialized, simpler bank account; hiring an accountant if relevant and practicable.
The thing is, we all want to keep control. Sometimes we can do that! Sometimes we can’t, and if we’re going to lose some aspect of control, it’ll generally go a lot better if we do it on our own terms, so that we ourselves can look out for future-us in our planning.
Want to know more?
You might enjoy her blog, which includes also links to her many videos on the topic, including such items as:
- Neuroplasticity – #1 Way To Increase Brain Health
- Which Diet PREVENTS Alzheimer’s? | Best Brain Health Diet
- Stop Anxiety About Dementia & Do I Have Dementia?
For the rest, see:
This Beautiful Brain | The Science Of Brain Health
Enjoy!
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Stop Using The Wrong Hairbrush For Your Hair Type
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When you brush your hair, you’re either making it healthier or damaging it, depending on what you’re using and how. To avoid pulling your hair out, and to enjoy healthy hair of whatever kind you have and whatever length suits you, it pays to know a little about different brushes, and the different techniques involved.
Head-to-head
Brush shapes and sizes are designed to achieve different effects in hair, not just for decoration. For example:
- Rat tail combs are excellent for parting and sectioning hair with clean lines. The rat tail part is actually more important than the comb part.
- Regular combs are multipurpose but best for use with flat irons, ensuring straighter hair for a longer time.
- Wide-tooth combs should not be used for detangling as they can cause breakage; instead, use a proper detangling brush. Speaking of detangling…
- Detangling brushes are essential for daily use. Whichever you use, start brushing from the bottom to prevent tangles from stacking and worsening. As for kinds of detangling brush:
- The “Tangle Teaser” is a good beginner option, but it may not detangle well for thicker hair.
- Wet Brush (this is a brand name, and is not about any inherent wetness) is the recommended detangling brush for most people. It can be used on wet or dry hair.
- Mason Pearson brush is a luxury detangling brush (see it here on Amazon) that works slightly more quickly and efficiently, but is expensive and not necessary for most people.
- Teasing brushes are for adding volume by backcombing—but require skill to prevent visible tangles. Best avoided for most people.
- Ceramic round brushes are the best for blow-drying, because they hold tension and help hair dry smoother and shinier.
- Blow-dryer brushes are great for easy blow-drying but should not be used on dry hair, to avoid damage.
- Denman brushes are for people with natural curls, enhancing curls without straightening them like a Wet brush would.
For more on all of these brushes, plus visual demonstrations, enjoy:
Click Here If The Embedded Video Doesn’t Load Automatically!
Want to learn more?
You might also like to read:
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Benefits of Different Tropical Fruits
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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
❝Would very much like your views of the benefits of different tropical fruits. I do find papaya is excellent for settling the digestion – but keen to know if others have remarkable qualities.❞
Definitely one for a main feature sometime soon! As a bonus while you wait, pineapple has some unique and powerful properties:
❝Its properties include: (1) interference with growth of malignant cells; (2) inhibition of platelet aggregation*; (3) fibrinolytic activity; (4) anti-inflammatory action; (5) skin debridement properties. These biological functions of bromelain, a non-toxic compound, have therapeutic values in modulating: (a) tumor growth; (b) blood coagulation; (c) inflammatory changes; (d) debridement of third degree burns; (e) enhancement of absorption of drugs.❞
*so do be aware of this if you are on blood thinners or otherwise have a bleeding disorder, as you might want to skip the pineapple in those cases!
Source: Bromelain, the enzyme complex of pineapple (Ananas comosus) and its clinical application. An update
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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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