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Have you ever walked into a room and just completely forgot why you went in there? Or maybe you just find yourself staring at the computer, rereading the same sentence three times because your brain just doesn't want to cooperate. Or maybe you have struggled to remember a familiar name and you lost your train of thought halfway through a conversation, or felt like you were just moving through the day with like 10 browser tabs open in your brain, and like at least two of them are completely frozen. For many women in midlife, these moments can just feel so unsettling. You start to wonder, is this menopause or is there something wrong with my memory? Maybe I'm just overwhelmed. Or that question that sometimes will just pop into your brain at like two o'clock in the morning, asking, is this the beginning of dementia? But one factor that is often overlooked is sleep. Poor sleep doesn't only leave you physically tired, it can affect how clearly you think, how well you concentrate, how you store and retrieve memories, and how effectively you regulate your emotions. Today we're talking about what poor sleep may be doing to your midlife brain and why some of the brain fog, forgetfulness, irritability, and that emotional reactivity you're experiencing may not be a personal failure. Your brain just may simply be trying to operate without enough recovery. Welcome to the Sleep Coach. I'm your host, Shelly Simpson. If you're exhausted but your mind won't shut off at night, you're in the right place. Here we quiet the 3 a.m. mind, calm the body, and help you finally get the sleep you've been missing. This episode also marks the beginning of a new direction after our emotional regulation series. And if you didn't have a chance to listen to that, go back and listen because it was a really good series on how we become reactive, why we become reactive, how we get triggered, taking you from reaction to response, what you do when you're already activated. And then just trying to get those emotions to just not stuffing them down, but learning how to operate in them. It was a good series and it was over four weeks. So I hope you'll go back and listen with some good information. Now, since we've talked about why emotions can feel more intense in life and how to work with them when they arise, and how to repair them after we've reacted. Now we're going to look at another piece of the puzzle. What happens inside the brain when it consistently just doesn't get the sleep that it needs? This information is for education and isn't intended to diagnose or treat a medical condition. If you're noticing new worsening or disruptive cognitive changes, please speak with a qualified healthcare professional. Part one, what do we mean by brain fog? Let's begin by clearing up something. Brain fog isn't a formal medical diagnosis, it's just a collection of cognitive symptoms that can include difficulty concentrating, forgetfulness, slower thinking, trouble finding words, losing your train of thought, difficulty multitasking, which, in my personal opinion, there's really no such thing as multitasking because you can't fully put your 100% attention on five to ten different things at once. I could go down a rabbit hole on that one. Or just feeling mentally cloudy or disconnected. These experiences are commonly reported during the menopause transition. Research reviews suggest that some of the cognitive areas that can be affected during perimenopause include attention, processing speed, working memory, and verbal memory. Working memory is the short-term mental workspace you use to hold and manipulate information. For example, it helps you remember the beginning of a sentence while you're listening to the end of it. Like, for instance, when I'm taking notes in church and the pastors just said something that's like, oh my gosh, I gotta write this down. So I'm writing it down and he's already finished the sentence, and I'm trying to write down the beginning of the sentence. So it just helps you to follow along or just help you follow several steps in a set of instructions and maybe even remember why you even open the refrigerator. Yes, sometimes you open it because you just wanted a snack, but sometimes you're standing there, you don't even know why you open the refrigerator door. You're like, why am I here? What did I come here for? You ever been there? Many times. Hormonal changes can play a role in these cognitive symptoms. Estrogen interacts with several brain systems involved in memory, mood, cognition, but hormones aren't the only possible contributor. Things like stress, anxiety, depression, medications, maybe thyroid conditions, nutrient deficiencies, sleep apnea, those wonderful hot flashes, and just disrupted sleep, they can all affect how clearly you think. That's why it isn't accurate to blame every forgotten word just on estrogen or every rough night on menopause. Midlife symptoms just they rarely come all nicely, neatly wrapped up in a nice little package at your front door with a nice little name tag on it. They tend to interact. Hormonal changes can contribute to hot flashes and night sweats, as we know. And those symptoms can interrupt your sleep. Poor sleep can then worsen your concentration, your mood, and that perception of brain fog. And that result is just become such a frustrating cycle. Poor sleep affects your attention first. One of the earliest cognitive abilities affected by poor sleep is sustained attention. And sustained attention is your ability to stay focused on something over time without mentally drifting away. A 2024 meta-analysis examining 44 studies found that even one night of restricted sleep, increased sleepiness, and impaired sustained attention, participants experience slower reaction times and more attentional lapses. That matters because attention is the front door to memory. Before your brain can remember something, it has to register the information. If you're tired and your attention drifts while someone is trying to tell you something, or maybe someone is trying to explain this way to do something in the software program that you guys do at work, and your brain just never really fully grasps what the person is telling you. And it just like forgets that information may not have been stored clearly in the first place. Imagine trying to take a picture while that camera keeps losing focus. The problem isn't necessarily that the photo disappeared later, it just may not have been captured clearly. This is one reason why poor sleep can feel like memory loss when part of the problem is actually an attention problem. So you may notice when you things like you read an email, reread an email without absorbing what you actually read, or you read the same paragraph in a book over and over, and you're like, oh my gosh, I totally don't even know what I just read. Or maybe you miss parts of conversations, or you start one task and then you get distracted by another one. Oh my goodness, this is a big one. You'll start one task, one project, and you find yourself in a completely different room and you're like, wait, how did I get here? Or maybe you make more small mistakes. Maybe you struggle to organize or prioritize. I mean, this is a big one. You have this long list of things you need to get done, and you just feel overwhelmed just even looking at the list because you're like, I don't even know what to do first. Maybe you forget what you were just about to do. For a midlife woman, managing work, family, appointments, relationships, changing health needs, and that mental to-do list. I mean, they could qualify as like a small novel. They just reduce your attention and it just all feels so overwhelming. It isn't that you just suddenly became incapable. Your brain just may be working harder to accomplish tasks that normally would require less effort. Sleep helps turn experiences into memories. Sleep isn't a period when the brain simply shuts down. Different stages of sleep support different aspects of learning and memory. During sleep, the brain helps process and stabilize information gathered throughout the day. This process is often called memory consolidation. You can think of it as the brain organizing what happened during the day, strengthening some of that information, integrating it with existing knowledge, and then deciding what needs to be retained. The hippocampus, which is a brain structure heavily involved in learning and memory, works with other parts of the brain during this process. When sleep is shortened or repeatedly disrupted, those memory processes just may not be working as efficiently. Poor sleep can affect both sides of memory. Encoding, which is taking in new information, and then consolidation, which is stabilizing that information so it can be recalled later. This can explain why you may struggle to learn something new after a bad night or just having difficulty recalling details from the previous day. It doesn't mean that every forgotten appointment or misplaced phone is an evidence of cognitive decline. Occasional forgetfulness happens at every age, especially when we're tired or distracted or stressed or just trying to do six things at once. But if sleep problems have become chronic, they can just be adding another layer of difficulty to a cognitive change already occurring during midlife. Why concentration becomes harder? Concentration isn't controlled by one isolated area of the brain. It depends on multiple networks communicating effectively, including systems involved in alertness, attention, decision making, working memory, and impulse control. Sleep loss can actually disrupt activity and communication within those networks. One area that is pretty important here is the prefrontal cortex. And it's the part of the brain right behind your forehead, and it supports planning, judgment, decision making, attention, and emotional control. When you're rested, the prefrontal cortex helps you prioritize information and just filter out distractions. When you've underslept, that filtering system just doesn't work as well. Everything starts to feel like it's just massively urgent. The email notifications, the laundry, the unfinished projects, the dog barking, the text you forgot to answer, or that someone may be chewing way too loud, and you're like, oh my gosh, stop. Your brain just has less capacity to decide what deserves your attention and what can be ignored. That's when ordinary decisions actually feel just difficult. And you might stare into your pantry trying to figure out what to eat for dinner, and it's just like this complex ethical dilemma that you can't quite figure out. This is why simply telling yourself to focus harder doesn't always work. Concentration isn't only a matter of motivation, it just depends partly on the condition of the brain doing the concentrating. Poor sleep can change your mood. Poor sleep doesn't only make people sleepy, it can make the emotional world just feel more negative. A meta-analysis of experimental sleep deprivation studies found that sleep loss had a moderate effect on increasing negative mood. People reported more feelings such as irritability, anxiety, sadness, and emotional distress. At the same time, sleep loss can just reduce that positive mood. That means that you may not only feel bothered by difficult experiences, you just may also not feel that emotional lift from a good experience. Like it's almost like you flatline. Things that would normally feel enjoyable may just start to feel like effort. And small inconveniences may just feel out of line and frustrating. This relationship works in both directions. Poor sleep can worsen mood, while anxiety, depression, and chronic stress can make it harder to sleep. It just creates a cycle. You don't sleep good, you feel more anxious, irritable, emotionally depleted. That emotional activation follows you into the evening, then your mind is just on a high alert and it's off to the races when you are trying to fall asleep. If you've been caught in this cycle, the answer isn't to blame yourself for not being positive enough. Your sleep, mood, stress response, and brain function are all interacting with one another. The sleep emotional regulation connection. This brings us back to the emotional regulation series we just completed. Research suggests that sleep loss can increase reactivity in the amygdala. And I've talked about this before. That's the part of the brain involved in detecting and responding to emotionally important information. At the same time, insufficient sleep can weaken communication between the amygdala and areas of the prefrontal cortex that help evaluate and regulate emotional responses. So, in plain language, the brain's emotional alarm, it might be it might get louder while its thoughtful supervisor has shown up late carrying an extra large latte. Pumpkin latte, to be exact. Yum. One well-known brain imaging study found that sleep-deprived participants showed heightened amygdala responses to negative emotional images and weaker functional connectivity between the amygdala and the prefrontal cortex. This doesn't mean that every emotional reaction is caused by poor sleep. It just means poor sleep can reduce the amount of space between a trigger and your response. You might feel like you just get more frustrated more quickly. Or maybe you just interpret something more negatively, or you have less patience. Maybe you find it harder to pause before reacting. Possibly you feel overwhelmed by situations that you would just normally manage without feeling that sense of overwhelm. Or you struggle to recover emotionally after something upsetting. And this is why checking your capacity matters. We've talked about that in past episodes in the emotional regulation series. If you've had just several nights of interrupted sleep or just broken up sleep, you may be starting the day with a less cognitive and emotional reserve. The reaction still matters. We are still responsible for how we speak and behave. But understanding what contributed to the reaction gives us a better chance of addressing the actual problem. Sometimes the next step is an apology, a clean apology, like I've talked about in my last episode. Sometimes it's a boundary. Sometimes you just may need a food or a snack. Maybe you just need some quiet or to take a walk or just one less demand, just taking one less thing off your to-do list that can't possibly wait until tomorrow, or maybe even delegate to somebody else. Sometimes it's recognizing that you just haven't slept well in like four nights, and your nervous system is running an emotional equivalent of your phone battery like on 3%. It's just not gonna give you the capacity. It's not, you just don't have it. It's just not there. You're running on empty. So why midlife can magnify the effects? Poor sleep can affect cognitive and emotional functioning at any age, but midlife women can experience several overlapping challenges. Hormonal fluctuations may affect sleep, mood, and cognition. While those lovely hot flashes and night sweats can cause you to wake up several times during the night, then possibly stress and maybe even caregiving responsibilities can keep the brain mentally activated. Or anxiety and maybe low mood can also just make sleep more difficult. At the same time, the cognitive changes associated with the menopause transition can include difficulties with verbal memory, attention, working memory, and even just processing speed. This doesn't mean menopause automatically causes serious cognitive decline. Menopause-related brain fog is not the same thing as dementia. Many women experience temporary changes in their cognitive performance during the menopause transition, but poor sleep can just make those changes just feel more pronounced. It's helpful to separate the experience from the story we attach to it, just like I've talked about before, and the reset framework S standing for separate what is happening from the story that you are telling yourself. The experience might look like I couldn't remember that word. Why am I struggling to figure out? Oh my gosh, I know the word. It's on the tip of my tongue, but I cannot remember it. The story that is coming to your brain is oh my gosh, my brain is failing. I'm on the way to dementia or Alzheimer's. Let's reframe that. I'm noticing more trouble recalling more. Words and I've also been sleeping really badly lately. I haven't gotten enough sleep. So I'm going to pay attention to the pattern. And if it continues to worsen or just interferes with my daily life, I'm going to go ahead and make a doctor's appointment. That response takes the concern seriously without immediately assuming the worst. So what can you do this week? I don't want to end this episode by handing you another perfect 10-step nighttime routine. Instead, we're going to choose one practical experiment. So first track the connection for one week. Briefly record how many times you remember waking up during the night, maybe just keep a notebook handy or just put it in your phone in the morning. How refreshed you feel in the morning, what your concentration is like that day, what your mood or irritability is like that day. And then any noticeable brain fog. You aren't trying to produce a laboratory quality data. You're just simply looking for a pattern. Do your word-finding problems feel worse after a night of poor sleep? Or maybe you find yourself more reactive after many nights of poor sleep. Does your concentration improve after a good night of restorative sleep? Awareness helps you replace the I am losing it with good useful information. Protect your wake up time. If possible, try to get up about the same time each day. A good consistent wake time helps you anchor that circadian rhythm, which is the internal timing system that influences when you feel alert and when you become sleepy. You don't have to be perfect. Your brain isn't going to file a complaint against you just because you slept 30 minutes later on a Saturday morning. But try to aim for consistency, not necessarily rigidity. Third, give your brain fewer jobs at once. So when you're tired, reduce that unnecessary need to multitask. Write information down. Keep lists. I am constantly writing things down, or I'm sending Alexa a reminder to remind me to do something the next day. Things will just pop in my head and it'll be like, oh, I gotta write this down before I forget, or I gotta set myself a reminder on my phone or on Alexa. Just getting that task off your brain also helps. One other thing you need to try to do is to complete one task before you start another one, if possible. I know that's hard as a woman, especially if you still have kids at home. The other thing is to try to silence all notifications, turn your phone off, maybe even put it in another room if you are doing something that requires your complete 100% concentration. Using external supports isn't cheating, it just reduces the load placed on your working memory. Fourth, create a decompression period. If your brain moves directly from work, family, news, emails, social media, right straight into bed, it may not be ready to sleep just because the clock says it should be. Even 10 or 15 minutes, I suggest a little bit longer than that. I think it should be 30 minutes to an hour, but try at least 10 to 15 minutes of lower stimulation. This can help create that bedtime transition. Dim your lights, maybe stretch, maybe read something calming, read a book, read your Bible, pray, journal, listen to quiet music. The goal isn't to perform relaxation perfectly, it's just to stop feeding your brain new material right before asking it to settle down. Fifth, know when to seek help. Talk with a healthcare professional if sleep problems are persistent, or if you snore loudly, or someone tells you you snore loudly, or you wake up gasping, if daytime sleepiness is affecting your safety, or if cognitive changes or new worsening or interfering with everyday activities. Sleep apnea, as we've talked about, can occur in women, but it just doesn't always look like the stereotypic type of someone who possibly just snores loudly at night. Mood conditions, thyroid disorders, medication effects, nutrient deficiencies, these can all contribute to cognitive symptoms. Brain fog is real, my friend, but it has more than one potential cause. If your brain has felt foggy, forgetful, unfocused, or just emotionally stretched thin, I want you to take this away. Your brain isn't lazy, weak, or betraying you. It may be responding to hormonal changes, stress, mental load, interrupted sleep, or just a combination of all four. Sleep supports attention, learning, memory, mood, and the brain networks that help you regulate emotions. Improving sleep won't solve every midlife challenge, but it can give your brain a stronger foundation from which to handle them. So this week, instead of judging yourself for forgetting that word or losing your focus or just feeling more emotionally reactive, get curious about the sleep underneath it. Ask yourself how rested is my brain with this task or this project that I'm expected to handle. Because sometimes brain fog isn't proof that you're losing your edge. Sometimes your brain is just simply asking for recovery. If this episode helped you understand what may be happening beneath your brain fog or mood changes, share it with another midlife woman who has been wondering why her brain suddenly feels different. And be sure to follow the show so you don't miss our next conversation. Until next time, give yourself permission to slow down, listen to your body, and make rest a part of how you care for your brain. Thank you for spending this time with me today. Be sure to hit follow so you don't miss what's coming next week. And before you go today, would you do me a quick favor? Please leave a rating in review. Your support will help more women find the show. Remember, you're not broken. Your body just needs support. Until next time, keep calming the mind, supporting the body, and creating the conditions for better sleep. Sweet dreams.