Why Using Your Phone At Night Is Twice As Bad As You Age

Are you a senior who can't figure out why you're sleeping so badly? Here's something that might surprise you. You can do everything right all day long and still ruin your sleep in less than 10 minutes by doing one specific thing just before bed. So, in this video, I'm going to walk you through exactly what that is so you can get the sleep that you deserve tonight. Hey everyone, I'm Dr. Michael Bruce, the sleep doctor. There's a habit I've been seeing with more and more seniors lately and it can seem pretty innocent. In fact, most people don't even think twice about it, but I can really see how it impacts your sleep. And that habit is using your phone or tablet right before bed. Now, I already know what you're thinking. Dr. Bruce, is this about blue light? Should I get those glasses? No. There's a separate problem related to using your phone or tablet before bed and it is a much bigger issue than blue light. In fact, using an electronic device before bed has been proven to cause negative effects on sleep quality including longer time to fall asleep, shorter sleep duration, and increased sleep disturbances. And since the use of phones or tablets before bed has basically skyrocketed among seniors, I thought it would be important to talk about this problem today. But here's the thing, I'm not going to tell you to stop using your phone or tablet. Instead, I'm going to tell you how to use your phone or tablet so that it doesn't hurt your sleep. There's an important difference. Now, let's talk about blue light because

for the longest time experts thought that it was a main reason phone use had such a negative impact on your sleep. Blue light is a wavelength of visible light naturally present in sunlight. Our bodies evolved to use it as an environmental cue. During the day, it suppresses melatonin and keeps you alert. And as it fades in the evening, your brain reads that as a signal to start releasing melatonin and prepare for sleep. The problem is your phone, tablet, and TV all emit significant amounts of blue light. Your brain cannot easily distinguish between sunlight and your iPhone screen, so it can delay melatonin release and push back your natural sleep window. But, here's the truth. Recent research has cast doubt on just how significant blue light actually is. In fact, in a 2019 study from the University of Manchester found that warm yellow light can be just as disruptive as blue light. So, yes, blue light is real, but what we're discovering is it's not the main reason your phone is hurting your sleep. Now, you may have

also heard about something related to your phone called EMFs, electromagnetic fields. It's this invisible energy field produced by electrically charged objects. Phones and tablets emit non-ionizing radiation, the low-energy end of the spectrum, which is where Wi-Fi and cellular signals sit. There's a modest body of research suggesting EMF exposure may affect sleep through melatonin suppression and altered brainwave activity. A study from the Karolinska Institute in Sweden found brainwave changes in participants exposed to cell phone radiation before sleep, particularly in deep and REM sleep. But, I have to acknowledge there is real uncertainty here in the scientific community. The mainstream consensus is that non-ionizing EMFs have not been proven to harm sleep. However, some researchers have pushed back on this, arguing that studies have not reflected how people actually use their devices. That is, in bed, close to the body, for hours at a time. For seniors specifically, robust research on EMFs and sleep simply does not exist yet. So, where does that leave us? At this point, I'm not convinced that the problem with using your phone or tablet in bed is related to EMFs. They are worth being aware of and worth taking reasonable precautions, but again, the bigger issue here is something else entirely. So

what part of using your phone or tablet before bed is actually messing up your sleep? The answer is mental arousal. Yep, that's right. You might think that because you're not scrolling TikTok or playing Candy Crush, some innocent phone or tablet use before bed is not going to stimulate you enough to ruin your sleep. But, there are a few reasons why seniors are especially susceptible to screen use before bed. Not to mention that in general, seemingly innocent things like news, social media, texts, and emails all trigger real physiological responses, like my favorite, an elevated heart rate. And research consistently shows that pre-sleep emotional processing is one of the strongest predictors of difficulty falling asleep. Think about texts and social interactions for a moment. Every message you send or receive creates what I call an unresolved cognitive loop. And beyond individual messages, the sheer volume of content available at your fingertips makes the temptation almost impossible to resist. And even when you finally do put the phone down, even with it face down and silenced, simply knowing it's nearby keeps a part of your brain on low-level alert. Now again, it's

important to understand why seniors are more sensitive when it comes to phones and tablets before bed. It turns out it's a couple of reasons. The first, anxiety. Anxiety disorders and generalized worry increase with age, and anxious individuals are already kind of predisposed to pre-sleep cognitive arousal. Phones amplify an existing vulnerability. The second is news consumption. Research consistently shows that older adults consume significantly more news than younger people. And news, by design, is engineered to trigger your brain's threat detection responses. It's built to keep you alert, to keep you engaged, and to keep you reading, which is the exact opposite of what your brain needs an hour before sleep. The third factor is slower emotional processing. There's evidence that older adults take longer to emotionally disengage from negative stimuli, meaning upsetting or distressing content encountered on a phone before bed may linger cognitively far longer than it would for a younger person. The fourth factor is something we've talked about before, reduced sleep pressure. Seniors naturally have less homeostatic sleep pressure, that biological drive to sleep that builds throughout the day, which means they have less neurological force pushing them towards sleep to overcome the arousal effect of stimulating content in the first place. So, you can see it's not just the blue light, EMFs. Small, seemingly innocent phone or tablet use in the hours before bed can unnecessarily raise your arousal levels. So, what should you actually do

about it? Well, one approach a lot of people try is setting an alarm in the evening, a reminder that goes off about an hour or two before bed telling them put the phone down. And look, if this works for you, that's awesome. But the problem is, for a lot of people I know who've tried this, myself included, you're sitting on your couch enjoying some time on your iPad, catching up on emails, and then boop, the alarm goes off. And you know what you do? You just ignore it, because it's just too easy to do. So, if that technique works for you, wonderful, but don't count on it. Another approach is making a rule that you do not take your phone into the bedroom at all. Leave it charging in the living room, kitchen, whatever. I love the idea of this, but it can be genuinely difficult to commit if you use your phone as an alarm clock, or if you sometimes need it as a light in the middle of the night when you get up to use the bathroom. And I know some of my patients actually get more stressed when their phone is not in the room, because what if they have a health event and need to call 911? That stress in and of itself can disrupt your sleep. So, what's my ultimate recommendation? There's a simple middle ground, and it's something I think you can easily commit to. When you go to bed at night, charge your cell phone on the other side of the room, or at the very least, somewhere out of arms reach. That's it. Now, let me tell you why this works better than what you might expect. If your phone is on your nightstand, it's all too easy to reach over and send one last email, look something up, check the news one more time. But, if your phone is across the room, that small physical barrier is often enough to break the habit. When you start your wind-down routine, those 20 to 30 minutes before you fall asleep, there's no temptation to automatically reach over and grab it. And for those of you who are concerned about EMFs, keeping your phone further away from your body while you sleep is a perfectly reasonable precaution to take, regardless of where you fall on that debate. In addition, there's also something important that phones are quietly eliminating, and you probably don't even realize it's happening. The natural pre-sleep state of loose, drifting thought. That gentle mental wandering that happens when you just lie quietly without any stimulation. This actually serves a critical psychological function in the transition your brain is making towards sleep. Phones eliminate that entirely by filling every idle moment with external stimulation. Your brain never gets a chance to begin that natural wind-down, and I'll leave with you one final benefit that I have personally experienced from keeping my phone on the other side of the room. When my alarm goes off in the morning, I actually have to get up to turn it off, and that has made it so much easier to stick to a consistent wake-up time. Now, you've heard me say this before, a consistent wake-up time is one of the most important things that you can do as you get older, not just for your sleep, but for your brain health as well. In fact, I have a whole video on the importance of a consistent wake time for cognitive health, and you can watch that right here. And again, if you enjoyed this video, give it a like and subscribe for more sleep tips and health content. This is Dr. Michael Breus, the sleep doctor, wishing you sweet dreams.