Yes, blue light from your phone can harm your skin. A dermatologist explains
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Social media is full of claims that everyday habits can harm your skin. It’s also full of recommendations or advertisements for products that can protect you.
Now social media has blue light from our devices in its sights.
So can scrolling on our phones really damage your skin? And will applying creams or lotions help?
Here’s what the evidence says and what we should really be focusing on.
Remind me, what actually is blue light?
Blue light is part of the visible light spectrum. Sunlight is the strongest source. But our electronic devices – such as our phones, laptops and TVs – also emit it, albeit at levels 100-1,000 times lower.
Seeing as we spend so much time using these devices, there has been some concern about the impact of blue light on our health, including on our eyes and sleep.
Now, we’re learning more about the impact of blue light on our skin.
How does blue light affect the skin?
The evidence for blue light’s impact on skin is still emerging. But there are some interesting findings.
1. Blue light can increase pigmentation
Studies suggest exposure to blue light can stimulate production of melanin, the natural skin pigment that gives skin its colour.
So too much blue light can potentially worsen hyperpigmentation – overproduction of melanin leading to dark spots on the skin – especially in people with darker skin.
2. Blue light can give you wrinkles
Some research suggests blue light might damage collagen, a protein essential for skin structure, potentially accelerating the formation of wrinkles.
A laboratory study suggests this can happen if you hold your device one centimetre from your skin for as little as an hour.
However, for most people, if you hold your device more than 10cm away from your skin, that would reduce your exposure 100-fold. So this is much less likely to be significant.
3. Blue light can disrupt your sleep, affecting your skin
If the skin around your eyes looks dull or puffy, it’s easy to blame this directly on blue light. But as we know blue light affects sleep, what you’re probably seeing are some of the visible signs of sleep deprivation.
We know blue light is particularly good at suppressing production of melatonin. This natural hormone normally signals to our bodies when it’s time for sleep and helps regulate our sleep-wake cycle.
By suppressing melatonin, blue light exposure before bed disrupts this natural process, making it harder to fall asleep and potentially reducing the quality of your sleep.
The stimulating nature of screen content further disrupts sleep. Social media feeds, news articles, video games, or even work emails can keep our brains active and alert, hindering the transition into a sleep state.
Long-term sleep problems can also worsen existing skin conditions, such as acne, eczema and rosacea.
Sleep deprivation can elevate cortisol levels, a stress hormone that breaks down collagen, the protein responsible for skin’s firmness. Lack of sleep can also weaken the skin’s natural barrier, making it more susceptible to environmental damage and dryness.
Can skincare protect me?
The beauty industry has capitalised on concerns about blue light and offers a range of protective products such as mists, serums and lip glosses.
From a practical perspective, probably only those with the more troublesome hyperpigmentation known as melasma need to be concerned about blue light from devices.
This condition requires the skin to be well protected from all visible light at all times. The only products that are totally effective are those that block all light, namely mineral-based suncreens or some cosmetics. If you can’t see the skin through them they are going to be effective.
But there is a lack of rigorous testing for non-opaque products outside laboratories. This makes it difficult to assess if they work and if it’s worth adding them to your skincare routine.
What can I do to minimise blue light then?
Here are some simple steps you can take to minimise your exposure to blue light, especially at night when it can disrupt your sleep:
- use the “night mode” setting on your device or use a blue-light filter app to reduce your exposure to blue light in the evening
- minimise screen time before bed and create a relaxing bedtime routine to avoid the types of sleep disturbances that can affect the health of your skin
- hold your phone or device away from your skin to minimise exposure to blue light
- use sunscreen. Mineral and physical sunscreens containing titanium dioxide and iron oxides offer broad protection, including from blue light.
In a nutshell
Blue light exposure has been linked with some skin concerns, particularly pigmentation for people with darker skin. However, research is ongoing.
While skincare to protect against blue light shows promise, more testing is needed to determine if it works.
For now, prioritise good sun protection with a broad-spectrum sunscreen, which not only protects against UV, but also light.
Michael Freeman, Associate Professor of Dermatology, Bond University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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What’s the difference between medical abortion and surgical abortion?
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In Australia, around one in four people who are able to get pregnant will have a medical or surgical abortion in their lifetime.
Both options are safe, legal and effective. The choice between them usually comes down to personal preference and availability.
So, what’s the difference?
PeopleImages.com – Yuri A/Shutterstock What is a medical abortion?
A medical abortion involves taking two types of tablets, sold together in Australia as MS2Step.
The first tablet, mifepristone, stops the hormone progesterone, which is needed for pregnancy. This causes the lining of the uterus to break down and stops the embryo from growing.
After taking mifepristone, you wait 36–48 hours before taking the second tablet, misoprostol. Misoprostol makes the cervix (the opening of the uterus) softer and starts contractions to expel the pregnancy.
It’s normal to have strong pain and heavy bleeding with clots after taking misoprostol. Pain relief including ibuprofen and paracetamol can help.
After two to six hours, the bleeding and pain usually become like a normal period, although this may last between two to six weeks.
Haemorrhage after a medical abortion is rare (occurring in fewer than 1% of abortions). But you should seek help if bleeding remains heavy (if you soak two pads per hour for two consecutive hours) or if you have have signs of infection (such as a fever, increasing abdominal pain or smelly vaginal discharge).
Do I have to go to hospital?
It is legal to have a medical abortion outside of a hospital up to nine weeks of pregnancy.
Depending on state or territory law, the medication can be prescribed by a qualified health-care provider such as a GP, nurse practitioner or endorsed midwife. These clinicians often work in GP surgeries or sexual and reproductive health clinics and they may use telehealth.
Medical abortions also occur after nine weeks of pregnancy, but these are done in hospitals and overseen by doctors alongside nurses or midwives.
Medical abortions after 20 weeks are done by taking medications to start early labour in a maternity unit. Often, medications are first given to stop the foetal heartbeat so it is not born alive. Then, other medications are given to manage pain.
These types of abortions are very rare. They may be used when an obstacle has prevented someone accessing an abortion earlier, continuing with the pregnancy is dangerous for the pregnant person’s health or if there is a serious problem with the foetus.
Medical abortions in Australia involve taking two tablets, usually around two days apart. PeopleImages.com – Yuri A/Shutterstock What is a surgical abortion?
Surgical abortions are performed in an operating unit, usually with sedation, so you will not remember the procedure. Surgical abortions are sometimes preferred over medical abortions because they are quicker. But the decision should be between you and your health-care provider.
In the first 12–14 weeks of pregnancy, a surgical abortion takes less than 15 minutes and patients are usually discharged a few hours after the procedure.
Medications may be given before surgery to soften and open the cervix and to ease pain. During the procedure, the cervix is gently stretched open and the contents of the uterus are removed with a small tube. This procedure is carried out by trained doctors with the assistance of nurses.
Surgical abortions after 12–14 weeks are more complex and are performed by specially trained doctors. Similar to medical abortions, medications may be given first to stop the foetal heartbeat.
It is normal to experience some cramping and bleeding after a surgical abortion, which can last about two weeks. However, like medical abortion, you should seek help for heavy bleeding or signs of infection.
Do I need an ultrasound?
It used to be common before an abortion to have an ultrasound scan to check how far along the pregnancy was and to make sure it was not ectopic (outside the uterus).
However, this is no longer recommended in the early stages of pregnancy (up to 14 weeks) if it delays access to abortion. If the date of the last menstrual period is known and there are no other concerning symptoms, an ultrasound scan may not be necessary.
This means people can access medical abortion much sooner, even from the first day of a missed period, without waiting for the embryo to be big enough to be seen on an ultrasound scan. This is called “very early medical abortion”.
Before and after care
Before having an abortion, a health-care provider will explain common side effects and when to seek urgent medical attention. For people who want it, many types of contraception can be started the day of abortion.
Your health-care provider will help you understand your options, including whether you want to start contraception. PowerUp/Shutterstock Even though the success rate of medical abortion is very high (over 95%) it is routine to make sure the person is no longer pregnant.
This is usually done two to three weeks after taking the first tablet mifepristone, either by a low-sensitivity urine pregnancy test (which you can do at home) or a blood test.
In the rare case a medical abortion has not worked, a surgical abortion can be done.
Sometimes after a medical or surgical abortion, tissue is left behind in the uterus. If this happens you may need another dose of misoprostol (the second tablet) or a surgical procedure to remove the tissue.
Some people may also seek support-based counselling or peer support to help them work through the emotions that might accompany having an abortion.
Understanding the differences and similarities between medical and surgical abortions can help individuals make informed decisions about their reproductive health.
It’s important to speak with an unbiased health-care provider to discuss the best option for your circumstances and to ensure you receive the necessary follow-up care and support.
Lydia Mainey, Senior Nursing Lecturer, CQUniversity Australia
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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PCOS Repair Protocol – by Tamika Woods
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PCOS (Polycystic Ovary Syndrome) affects about 1 in 5 women, and the general position of the medical establishment is “Oh dear, how sad; never mind”.
…which leaves a lot of people suffering with symptoms with little to no help.
This book looks to address that, and while it doesn’t claim to cure PCOS, it offers a system for managing (including: reducing) the symptoms. The author, a clinical nutritionist by academic background, tackles this in large part via being mindful about what one eats, in the context of the gut and endocrine system specifically.
It’s not just “have a gut healthy diet and eat foods with these nutrients”, though (although yes: also that). Rather, the author walks us through in-depth quizzes and lab testing advice, to advise the reader on how to understand the root cause of your PCOS symptoms, and then address each of those with an individualized management plan.
The style is on the low-end of pop-science, notwithstanding the clinically-informed content. For those who like a very chatty informal approach, you’ll find this one perfect. For those who don’t, well, you won’t find this one perfect, but you will most likely find it informative all the same.
Bottom line: if you or someone you care about (do you know 5 women?) has PCOS, the information in here could make a difference.
Click here to check out PCOS Repair Protocol, and suffer less!
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Gentle Nutrition – by Rachel Hartley, RD, LD
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The subtitle here claims “a non-diet approach”, but doesn’t everything, nowadays? Even books titled “The such-and-such Diet” tend to also assure us “it’s not actually a diet; it’s just a way of eating”, as if a diet is not—by definition—a way of eating. Usually what they want to communicate is that it’s not a restrictive diet, usually meaning not restrictive in quantity, or not restrictive in food type (rarely both).
This book is about intuitive eating, which is about as non-restrictive as any dietary approach can be, since it doesn’t restrict food type at at all, and it doesn’t restrict quantity in advance—rather, we learn to pay closer attention to our full signals.
No wait, we don’t. This time, it’s not about “full”, it’s about “satisfied”. This comes in two forms:
- A principle somewhat akin to the “eat until 80% full” idea
- A principle of ensuring the good is culinarily satisfying
This latter is important, if we want to have a good relationship with eating, and it also helps reduce portion sizes, when we truly take the time to mindfully savor a tasty morsel, rather than wolf down a plate of mediocre food.
The style is one that balance being encouraging with delivering science to back up that encouragement. This not only means encouragement to take up this dietary approach, but also, encouragement to let go of things like calorie-counting and BMI.
The recipes arranged per meal type, and indeed include things not found in many healthy eating books, such as gyoza dumplings, gnocchi, wontons, and shortbread. The recipes are mostly not, by default, vegan, vegetarian, gluten-free, dairy-free, or such. So if you have your own food restriction(s), the number of usable recipes will be diminished, barring any substitutions you can make yourself.
Bottom line: this is more about about how to go about intuitive eating, than it is a book with a lot of nutritional information (though there is some of that too). If you’d like to get going with intuitive eating, then this book can help.
Click here to check out Gentle Nutrition, and nourish gently!
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Which Magnesium? (And: When?)
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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
❝Good morning! I have been waiting for this day to ask: the magnesium in my calcium supplement is neither of the two versions you mentioned in a recent email newsletter. Is this a good type of magnesium and is it efficiently bioavailable in this composition? I also take magnesium that says it is elemental (oxide, gluconate, and lactate). Are these absorbable and useful in these sources? I am not interested in taking things if they aren’t helping me or making me healthier. Thank you for your wonderful, informative newsletter. It’s so nice to get non-biased information❞
Thank you for the kind words! We certainly do our best.
For reference: the attached image showed a supplement containing “Magnesium (as Magnesium Oxide & AlgaeCal® l.superpositum)”
Also for reference: the two versions we compared head-to-head were these very good options:
Magnesium Glycinate vs Magnesium Citrate – Which is Healthier?
Let’s first borrow from the above, where we mentioned: magnesium oxide is probably the most widely-sold magnesium supplement because it’s cheapest to make. It also has woeful bioavailability, to the point that there seems to be negligible benefit to taking it. So we don’t recommend that.
As for magnesium gluconate and magnesium lactate:
- Magnesium lactate has very good bioavailability and in cases where people have problems with other types (e.g. gastrointestinal side effects), this will probably not trigger those.
- Magnesium gluconate has excellent bioavailability, probably coming second only to magnesium glycinate.
The “AlgaeCal® l.superpositum” supplement is a little opaque (and we did ntoice they didn’t specify what percentage of the magnesium is magnesium oxide, and what percentage is from the algae, meaning it could be a 99:1 ratio split, just so that they can claim it’s in there), but we can say Lithothamnion superpositum is indeed an algae and magnesium from green things is usually good.
Except…
It’s generally best not to take magnesium and calcium together (as that supplement contains). While they do work synergistically once absorbed, they compete for absorption first so it’s best to take them separately. Because of magnesium’s sleep-improving qualities, many people take calcium in the morning, and magnesium in the evening, for this reason.
Some previous articles you might enjoy meanwhile:
- Pinpointing The Usefulness Of Acupuncture
- Science-Based Alternative Pain Relief
- Peripheral Neuropathy: How To Avoid It, Manage It, Treat It
- What Does Lion’s Mane Actually Do, Anyway?
Take care!
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Pistachios vs Brazil Nuts – Which is Healthier?
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Our Verdict
When comparing pistachios to Brazil nuts, we picked the pistachios.
Why?
In terms of macros, pistachios have more protein, carbs, and fiber, while Brazil nuts have more fat. The fats are mostly healthy, although it is worth noting that Brazil nuts have not only more total saturated fat, but also more saturated fat proportionally to total fats. All in all, Brazil nuts’ macro balance isn’t bad, but we say pistachios have it better.
When it comes to vitamins, pistachios have a lot more of vitamins A, B1, B2, B3, B5, B6, B7, B9, and C, while Brazil nuts have more vitamin E. An easy win for pistachios here.
In the category of minerals, it gets interesting: pistachios have more iron and potassium, while Brazil nuts have more calcium, copper, magnesium, phosphorus, selenium, and zinc. Sounds great, but… About that selenium:
- A cup of cashews contains 38% of the RDA of selenium. This will go towards helping your hair be luscious and shiny (also important for energy conversion).
- A cup of Brazil nuts contains 10,456% of the RDA of selenium. This is way past the point of selenium toxicity, and your (luscious, shiny) hair will fall out.
For this reason, it’s recommended to eat no more than 3–4 Brazil nuts per day.
We consider that a point against Brazil nuts.
Adding up the sections gives us an overall win for pistachios. Of course, enjoy Brazil nuts too if you will, but in careful moderation please!
Want to learn more?
You might like to read:
Why You Should Diversify Your Nuts
Take care!
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BOSH! – by Henry Firth & Ian Theasby
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Astonishingly, we’ve not reviewed this one before, so here we go. It’s certainly a famous one, and it’s got a lot of people into plant-based cooking. So, how justified is its reputation?
If you’re not used to cooking with only plants, then this will get you started with a broad palette and plenty of variety with plenty of taste.
In terms of complexity, the recipes are comparable to those found in our website’s recipes section, and can be described as very mid-range complexity. Indeed, looking on Amazon, we see some customers complaining that they are far too simple, and others complaining that they are far too complex.
With regard to how healthy the recipes are, well, they’re entirely plant-based which is good, but they’re not optimized for health the way ours are, so you will sometimes find more flour, sugar, etc than you’d see in ours.
Bottom line: if you’re already a well-seasoned plant-based cook, then this book will probably still give you some good ideas. And if you’re not? Well, this will set you up in good order!
Click here to check out BOSH!, and enjoy plant-based cooking!
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