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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Getting to Neutral – by Trevor Moawad
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We all know that a pessimistic outlook is self-defeating… And yet, toxic positivity can also be a set-up for failure! At some point, reckless faith in the kindly nature of the universe will get crushed, badly. Sometimes that point is a low point in life… sometimes it’s six times a day. But one thing’s for sure: we can’t “just decide everything will go great!” because the world just doesn’t work that way.
That’s where Trevor Moawad comes in. “Getting to neutral” is not a popular selling point. Everyone wants joy, abundance, and high after high. And neutrality itself is often associated with boredom and soullessness. But, Moawad argues, it doesn’t have to be that way.
This book’s goal—which it accomplishes well—is to provide a framework for being a genuine realist. What does that mean?
“I’m not a pessimist; I’m a realist” – every pessimist ever.
^Not that. That’s not what it means. What it means instead is:
- Hope for the best
- Prepare for the worst
- Adapt as you go
…taking care to use past experiences to inform future decisions, but without falling into the trap of thinking that because something happened a certain way before, it always will in the future.
To be rational, in short. Consciously and actively rational.
Feel the highs! Feel the lows! But keep your baseline when actually making decisions.
Bottom line: this book is as much an antidote to pessimism and self-defeat, as it is to reckless optimism and resultant fragility. Highly recommendable.
Click here to check out “Getting to Neutral” and start creating your best, most reason-based life!
PS: in this book, Moawad draws heavily from his own experiences of battling adversity in the form of cancer—of which he died, before this book’s publication. A poignant reminder that he was right: we won’t always get the most positive outcome of any given situation, so what matters the most is making the best use of the time we have.
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What’s the difference between ADD and ADHD?
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Around one in 20 people has attention-deficit hyperactivity disorder (ADHD). It’s one of the most common neurodevelopmental disorders in childhood and often continues into adulthood.
ADHD is diagnosed when people experience problems with inattention and/or hyperactivity and impulsivity that negatively impacts them at school or work, in social settings and at home.
Some people call the condition attention-deficit disorder, or ADD. So what’s the difference?
In short, what was previously called ADD is now known as ADHD. So how did we get here?
Let’s start with some history
The first clinical description of children with inattention, hyperactivity and impulsivity was in 1902. British paediatrician Professor George Still presented a series of lectures about his observations of 43 children who were defiant, aggressive, undisciplined and extremely emotional or passionate.
Since then, our understanding of the condition evolved and made its way into the Diagnostic and Statistical Manual of Mental Disorders, known as the DSM. Clinicians use the DSM to diagnose mental health and neurodevelopmental conditions.
The first DSM, published in 1952, did not include a specific related child or adolescent category. But the second edition, published in 1968, included a section on behaviour disorders in young people. It referred to ADHD-type characteristics as “hyperkinetic reaction of childhood or adolescence”. This described the excessive, involuntary movement of children with the disorder.
It took a while for ADHD-type behaviour to make in into the diagnostic manual. Elzbieta Sekowska/Shutterstock In the early 1980s, the third DSM added a condition it called “attention deficit disorder”, listing two types: attention deficit disorder with hyperactivity (ADDH) and attention deficit disorder as the subtype without the hyperactivity.
However, seven years later, a revised DSM (DSM-III-R) replaced ADD (and its two sub-types) with ADHD and three sub-types we have today:
- predominantly inattentive
- predominantly hyperactive-impulsive
- combined.
Why change ADD to ADHD?
ADHD replaced ADD in the DSM-III-R in 1987 for a number of reasons.
First was the controversy and debate over the presence or absence of hyperactivity: the “H” in ADHD. When ADD was initially named, little research had been done to determine the similarities and differences between the two sub-types.
The next issue was around the term “attention-deficit” and whether these deficits were similar or different across both sub-types. Questions also arose about the extent of these differences: if these sub-types were so different, were they actually different conditions?
Meanwhile, a new focus on inattention (an “attention deficit”) recognised that children with inattentive behaviours may not necessarily be disruptive and challenging but are more likely to be forgetful and daydreamers.
People with inattentive behaviours may be more forgetful or daydreamers. fizkes/Shutterstock Why do some people use the term ADD?
There was a surge of diagnoses in the 1980s. So it’s understandable that some people still hold onto the term ADD.
Some may identify as having ADD because out of habit, because this is what they were originally diagnosed with or because they don’t have hyperactivity/impulsivity traits.
Others who don’t have ADHD may use the term they came across in the 80s or 90s, not knowing the terminology has changed.
How is ADHD currently diagnosed?
The three sub-types of ADHD, outlined in the DSM-5 are:
- predominantly inattentive. People with the inattentive sub-type have difficulty sustaining concentration, are easily distracted and forgetful, lose things frequently, and are unable to follow detailed instructions
- predominantly hyperactive-impulsive. Those with this sub-type find it hard to be still, need to move constantly in structured situations, frequently interrupt others, talk non-stop and struggle with self control
- combined. Those with the combined sub-type experience the characteristics of those who are inattentive and hyperactive-impulsive.
ADHD diagnoses continue to rise among children and adults. And while ADHD was commonly diagnosed in boys, more recently we have seen growing numbers of girls and women seeking diagnoses.
However, some international experts contest the expanded definition of ADHD, driven by clinical practice in the United States. They argue the challenges of unwanted behaviours and educational outcomes for young people with the condition are uniquely shaped by each country’s cultural, political and local factors.
Regardless of the name change to reflect what we know about the condition, ADHD continues to impact educational, social and life situations of many children, adolescents and adults.
Kathy Gibbs, Program Director for the Bachelor of Education, Griffith University
This article is republished from The Conversation under a Creative Commons license. Read the original article.
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Optimal Black Pepper Dosage and Supplement
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It’s Q&A Day at 10almonds!
Have a question or a request? You can always hit “reply” to any of our emails, or use the feedback widget at the bottom!
In cases where we’ve already covered something, we might link to what we wrote before, but will always be happy to revisit any of our topics again in the future too—there’s always more to say!
As ever: if the question/request can be answered briefly, we’ll do it here in our Q&A Thursday edition. If not, we’ll make a main feature of it shortly afterwards!
So, no question/request too big or small
❝I may have missed it, but how much black pepper provides benefits?❞
So, for any new subscribers joining us today, this is about two recent main features:
As for a daily dosage of black pepper, it varies depending on the benefit you’re looking for, but:
- 5–20mg of piperine is the dosage range used in most scientific studies we looked at
- 10mg is a very common dosage found in many popular supplements
- That’s the mass of piperine though, so if taking it as actual black pepper rather than as an extract, ½ teaspoon is considered sufficient to enjoy benefits.
❝I loved the health benefits of pepper. I do not like pepper. Where can I get it as a supplement?❞
You can simply buy whole black peppercorns and take a few with water as though they were tablets. Your stomach acid will do the rest. Black pepper is also good for digestion, so taking it with a meal is best.
You can buy piperine (black pepper extract) by itself as a supplement in powder form, but if you don’t like black pepper, you will probably not like this powder either. We couldn’t find it readily in capsule form.
You can buy piperine (black pepper extract) as an adjunct to other supplements, with perhaps the most common/popular being turmeric capsules that also contain 10mg (or more) piperine per capsule. Shop around if you like, but here’s one that has 15mg piperine* per capsule, for example.
*They call it “Bioperine®” but that is literally just piperine. Same go
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Gut – by Dr. Giulia Enders
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On account of being an organ (or rather, a system of organs) whose functions are almost entirely autonomic, most of us don’t think about our gut much. We usually know there’s acid in the stomach, and we usually know there are “good and bad” gut bacteria. But what of the rest of what goes on?
For anyone who has a hazy half-remembered knowledge from school, this will serve as not only a reminder, but a distinct upgrade in knowledge.
Dr. Giuliua Enders talks us through not just the processes of what goes on, but, as a medical doctor, also many instances of what can go wrong, for example:
- Why do some people’s bodies mistake nuts for a deadly threat (and consequently, accidentally elevate them to the status of actually becoming a deadly threat)?
- Why are some people lactose-intolerant, and why do food intolerances often pop up later with age?
- Why do constipation and diarrhoea happen?
- Why is it that stress can cause stomach ulcers?
The style of writing is light and easy-reading, and the illustrations are clear too. This is a very accessible book that doesn’t assume prior knowledge, and also doesn’t skimp on the scientific explanations—there’s no dumbing down here.
Bottom line: knowing what goes on in our gut as akin to knowing what goes on under the hood of a car. A lot of the time we don’t need to know, but knowing can make a big difference from time to time, and that’s when you’ll wish you’d learned!
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The Gym For Your Mental Health
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Getting The Most Out Of Therapy
If you’ve never had therapy, what image do you have of it? Perhaps you imagine a bearded and bespectacled man in a suit, impassively making notes on a clipboard. Perhaps you imagine an empathetic woman, with tissues and camomile tea on standby.
The reality is: the experience of therapy can vary, a lot.
In its results, too! Sometimes we may try therapy and think “well that was a waste of time and money”. Sometimes we may try therapy and it’ll change our life.
So… Is there any way to make it less of a lottery?
First: knowledge is power
And while the therapist-client relationship certainly shouldn’t be a power struggle, you do want to be empowered.
So, read about different styles of therapy, and also, read some how-to guides for self-therapy. We’ve recommended some before in previous editions of 10almonds; you can check those books out here:
- How to Be Your Own Therapist: Boost your mood and reduce your anxiety in 10 minutes a day – by Owen O’Kane
- You Are the One You’ve Been Waiting For: Applying Internal Family Systems to Intimate Relationships – by Dr. Richard Schwartz
- DBT Made Simple: A Step-by-Step Guide to Dialectical Behavior Therapy – by Sheri van Dijk
- How to Do the Work: Recognize Your Patterns, Heal from Your Past, and Create Your Self – by Dr. Nicole LaPera
This will serve two purposes:
- You’ll know what to expect out of a therapist
- You can more efficiently “get to work” in therapy
It also, of course, could help you already, without even going to therapy!
Second: begin with the end in mind
A person who does not know what they want to get out of therapy, will likely not get much out of therapy. Or rather, their first task will be to figure that out. So, figure it out in advance, if you can.
Maybe you have a problem that has a specific name, for example poor self-esteem, anxiety, stress, depression, trauma, neuroticism, phobia, etc.
This isn’t Alcoholics Anonymous, and in this case you don’t want a lifetime of “Hello, my name is ______ and I have ______”, if you can help it.
So, what do you want?
- Maybe you want to be able to go to social events without feeling anxious
- Maybe you want your relationship(s) to be more secure and fulfilling
- Maybe you want to no longer have nightmares about that traumatic thing
- Maybe you want to be able to greet each day’s tasks with confidence and without overwhelm
…etc.
A good therapist will help you to set such goals (if you haven’t already), and attain them.
If you’re going the self-therapy route, then this is your job now!
It will probably start with the question: imagine that everything currently troubling you is now healed.
What would that look like, to you?
Third: get a good match for you
Unless you are going entirely the self-therapy route (which can work for some), you will want a therapist who’s a good match for you.
It may take a degree of “suck it and see” trial runs before you find the right one, but that takes time and money, so you’ll want to streamline the process as much as you can. If you do this well, you may be able to find a good therapist for you first time.
For this, personal recommendations (such as from friends) may help more than exmaining academic and institutional affiliations.
Yes, you want a well-qualified therapist who is a member in good standing of a respectable regulated body… but whether your therapist is easy for you to “get on with” will matter at least as much as whether their approach is psychodynamic, or 4th wave CBT, or IFS, or whatever seems popular in your time and place.
Bear in mind:
- Some therapists are specialized in helping with some kinds of things and not others. It will obviously help if the therapist you choose is specialized in the thing you are seeking help for.
- Some therapists may be able to relate to you better (or not), based on simple factors of who they are. To this end, while your therapist certainly doesn’t have to be a mirror image of you, factors like age, gender, race, etc can be relevant and may be worth considering, depending on what you are seeking help with, and what factors impact that thing.
Prefer keeping things to yourself?
Therapy isn’t for everyone, but having a good relationship with oneself definitely is. You might want to invest in one of the books whose reviews we linked above, and you might also get value from previous Psychology Sunday articles, which you can find in our archive (every seventh edition here has a Psychology Sunday main feature):
Click Here To Check Out The 10almonds Archive
To borrow the catchphrase of Dr. Kirk Honda (a therapist and therapy educator with decades of experience):
❝Take care of yourself, because you deserve it; you really, really do.❞
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Why Do We Have Pores, And Could We Not?
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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
❝Do we really need pores, and why are they bigger on the face?❞
Pores secrete sweat or sebum (there are different kinds of pores for each).
If we didn’t have sweat pores, we’d be unable to sweat, which superficially may seem like a bonus, but it’d make us prone to overheating (like dogs, pigs, and other mammals that cannot sweat).
If we didn’t have sebum pores (usually called hair follicles, which are supplied by a sebaceous gland), we’d be completely hairless, and also unable to supply our skin with natural oils that keep it healthy. So we’d have no hair and very unhappy skin.
Which is ironic, because to believe beauty magazines, we must at all costs minimize our pores (and indeed, interventions like botox* can kill them).
*Let’s give that its full name though:
Suffice it to say, we do not recommend getting injected with neurotoxins unless it is truly necessary to ward off a greater harm.
As for being bigger on the face, they need not be, but sebaceous glands are more active and numerous there, being most active and numerous in the face/forehead—which is why oily skin is more likely to appear there than other parts of the body.
If your facial sebaceous glands are too active for your liking…
…there are ways to reduce that, a simple and relatively gentle way (relative, for example, botox) is with retinoids, including retinols or retinoic acids. Here’s some of the science of that; the paper is about treating acne, but the mechanism of action is the same (down-regulating the sebaceous glands’ action):
The potential side-effects, however were noted as:
- Cheilitis
- Desquamation of the skin
- Pruritus
Which, in translation from sciencese, means:
- Chapped lips
- Flaky skin
- Itchiness
Which aren’t necessarily fun, which is why with retinoids are best taken in very small doses at first to see how your skin reacts.
Remember when we said what your skin would be like without pores? This is what would happen, only much worse.
Take care!
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