Why Is My Hair Falling Out After 40?

The first time you notice it, it's hard to unsee.

More hair in the shower. A thinner ponytail. A part that suddenly seems wider than it used to be.

Hair loss after 40 can feel frightening, but what if it's not the problem? What if it's one of the earliest signs that something in your body has changed?

In this episode of Healthspan on Her Terms, we'll explore:

• What "normal" hair shedding actually looks like
• Why today's hair loss may reflect something that happened 2–4 months ago
• How perimenopause and menopause affect the hair growth cycle
• The role of protein, iron, thyroid health, stress, and rapid weight loss
• When hair loss is a signal to seek medical evaluation

Hair is more than a cosmetic concern. It can be an important clue about what's happening beneath the surface.

If you're noticing more shedding, thinning, or changes in your hair, this episode will help you understand the most common reasons women lose hair after 40—and the questions worth asking before assuming it's "just aging."

If you found this episode helpful, please subscribe, leave a review, and share it with a friend. Together, we can help more women better understand their bodies and build a healthier future.

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Transcript

Mirror Moment And Big Questions

Speaker 0:00

Have you ever looked down at your hairbrush or cleaned out your shower drain and thought that cannot be normal? At first it's just a few extra hairs, then your ponytail feels thinner. You notice more scalp when you pull your hair back. Maybe your part seems whiter than it used to. Or your stylist asks, have you noticed your hair getting thinner? And suddenly you can't stop seeing it. You begin wondering, is this menopause? Is this my thyroid? Am I not eating enough protein? Am I going bald? Hair loss is one of the most emotional symptoms I see women struggle with. Not because it's dangerous, but because every time you look in the mirror, it's staring back at you. If you ever wondered about thinning hair, shedding, or changes in your hair after 40, this episode is for you. Because while your hair may be changing, it's also communicating. Today we're going to talk about why women lose hair during midlife, what hair can tell you about your health, and why treating hair loss starts with understanding what's happening beneath the surface. If you're new here, welcome. This podcast is for women who want to understand what their body is trying to tell them so they can make informed decisions about their health and create a longer, healthier, more vibrant life. One of the things I've learned after caring for women for more than 30 years is that the body is almost always giving us clues. The challenge isn't that our bodies aren't communicating, it's that no one has ever taught us how to listen. Around here, we can't and we don't chase symptoms. We look for patterns. We connect the dots between hormones, nutrition, metabolism, sleep, stress, movement, inflammation, and the many systems that are constantly communicating inside your body. Because when you understand the why, you can make better decisions about the what. Last week we talked about the thyroid and why so many women are told their thyroid tests are normal even though they still do not feel like themselves. We also talked about the why symptoms like fatigue, brain fog, weight gain, and hair thinning often overlap with other conditions, especially during perimenopause and menopause. At the end of that episode, I told you we would spend today talking specifically about hair loss. And I think it's one of the most important conversations we can have, because hair isn't just part of our appearance. For many women, it's part of our identity. When hair starts changing, it can feel deeply personal. It can affect your confidence. It can make you dread washing your hair because you know what you'll see in the drain. It can make you avoid wearing your hair up because your scalp seems more visible. And if you've stood in front of that mirror wondering what's happening to me, I want you to know you're not alone. Hair loss is one of the most common concerns women bring to their health care provider during midlife. But here's the good news. Hair loss is a symptom. And symptoms are clues. They are your body's way of asking us to pay attention. The goal isn't simply to stop the hair from falling out. The goal is to understand why it's happening in the first place. Because once we understand the why, we can begin making thoughtful, evidence-based decisions about what to do next.

Normal Shedding Versus True Loss

Speaker 4:02

That's exactly what we're doing today. Let's start with something that surprises almost everyone. Losing some hair every single day is actually quite normal. So, how do you know the difference between normal hair shedding and hair loss that's trying to tell you something more? Before we talk about the why hair falls out, we need to understand something most people are never taught. Your hair isn't all growing, at the same time. Every single hair on your scalp is on its own timeline. Think of it like a neighborhood. Some houses are just being built, some are well established, and others are being torn down to make room for something new. Your hair follicles work in much the same way. And at any given moment, most of your hair is actively growing, a small percentage is taking a break, and another percentage is naturally shedding so that new hair can begin to grow. In fact, it's completely normal to lose somewhere between 50 and 100 hairs every day. Most of us simply don't notice it because those hairs are constantly being replaced. The problem happens when the balance is disrupted. Sometimes more hairs enter the shedding phase than they should. Sometimes new hairs don't grow back as quickly. Sometimes the hair that does grow back is thinner, finer, or shorter than it used to be. That's when women begin to notice changes. Your ponytail feels smaller. Your part looks wider. You see more hair in the shower or on your pillow. Your hairstylist mentions that your hair seems thinner. These changes often don't begin overnight. Hair grows slowly, about half an inch each month. So the event that triggered the hair loss may have been two, three, or even four months earlier. That's one of the reasons hair loss can be so frustrating. The symptoms you're seeing today may actually be telling a story of something your body experienced months ago. It could have been a significant illness, a major surgery, rapid weight loss, a particularly stressful season of your life, changes in your hormone levels, or nutritional deficits that have been developing over time. That is why as healthcare providers, we don't just ask, when did your hair start falling out? We also ask, what was happening in your life three or four months ago before you noticed it? That question often provides some of the biggest clues. And here's something else that's important to understand. Not all hair loss looks the same. Some women notice increased shedding throughout their entire scalp. Others notice thinning primarily along their part or at the crown of their head. Some develop round patches where hair disappears completely. Each pattern can point us toward a different possible cause, which is exactly why it's important not to assume every woman with hair loss has the same underlying problem. Hair loss isn't a diagnosis, it is a symptom. And like every symptom we've talked about on this podcast, it is an invitation to become curious about what your body may be trying to tell you. So

Hormones In Perimenopause And Menopause

Speaker 7:33

if hair loss can have so many different causes, where do we even begin? Let's start with one of the biggest changes women experience during midlife, changing hormone levels. One of the first things many women assume when they begin losing hair is, it must be my hormones. And during perimenopause and menopause, hormones absolutely can play a role. As estrogen levels begin to fluctuate and eventually decline, many women notice changes not only in their menstrual cycles, but also in their skin, their sleep, their body composition, and yes, in their hair. Estrogen helps support the hair growth cycle. It encourages hair to remain in the active growing phase longer. As estrogen declines, more hairs may shift into the resting and shedding phases. At the same time, some women become more sensitive to the androgens or hormones like testosterone. Even when testosterone levels are completely normal, the hair follicles themselves may respond differently than they did when women were younger. This is one reason some women notice thinning near the temples or widening of their part during menopause. But here's where I want to be careful. It would be easy to say you're in menopause, so that's why you're losing your hair. Sometimes that is true, but sometimes it's only one piece of the puzzle. Remember what we talked about last episode. The body doesn't work in isolated systems. Your hormones influence your thyroid. Your thyroid influences your metabolism. Your metabolism influences nutrient needs. Stress affects hormones. Inflammation affects hair follicles. Nutrition affects every stage of your hair growth. Everything is connected. So while hormones may contribute to hair loss, I don't want you to stop asking questions there. Because if we only blame menopause, we might miss something that is actually treatable. Maybe your iron stores are low. Maybe you've unintentionally stopped eating enough protein. Maybe you experienced a significant illness a few months ago. Maybe you've lost weight rapidly. Maybe your thyroid really does deserve a closer look. Or maybe several small factors are happening all at once. That's often what I see in clinical practice. Not one dramatic cause, but three or four small contributors that together are enough to disrupt healthy hair growth. And that's why I encourage women not to look for a single culprit. Instead, start asking, what has changed in my body over the last six months? That question almost always leads to a much more meaningful conversation than simply asking, what's wrong with my hair? So if hormones are only one piece of the puzzle, what are some of the other common reasons women begin losing hair during midlife? Let's

Hair As A Whole-Body Clue

Speaker 10:43

walk through the biggest ones I evaluate in clinical practice. I think you'll be surprised by how many have nothing to do with your hair itself. Now let's put on our detective hats. When someone comes to see me because they're losing their hair, I don't immediately start thinking about supplements or treatments. I start asking questions because hair loss isn't a diagnosis. It's a symptom. And it's a symptom, it's a clue. First question I'm asking myself is, is this a hair problem or is the hair simply reflecting something happening somewhere else in the body? Most of the time it's the second part. Hair is one of the fastest growing tissues in your body. Creating healthy hair requires energy, protein, vitamins, minerals, healthy hormones, and good blood flow. If your body doesn't have enough of those resources, it has to make decisions about where to invest its energy. Think about it in this way. If your body is trying to keep your heart beating, your lungs breathing, your brain functioning, and your immune system working, growing thick, healthy hair isn't going to be at the top of the priority list. Hair is in many ways a luxury. When your body is under stress, whether that's physical stress, nutritional stress, hormonal changes, illness, or emotional stress, it may temporarily redirect its resources toward the organs that keep you alive. Your hair notices. That's why I often tell patients that hair can be one of the earliest tissues to reflect that something has changed internally. It's also like a report card. Not a report card on your appearance, a report card on how well your body has been supported over the past several months. So instead of asking, how do I stop my hair from falling out? I encourage women to ask a different question. What has my body been trying to manage over the last several months? That shift in perspective changes everything. Instead of chasing the symptom, we begin looking for the reason the symptom developed. And in clinical practice, there are several common areas I begin exploring.

Protein, Dieting, And Rapid Weight Loss

Speaker 13:11

The first is nutrition. Hair is made primarily of protein. If you're not eating enough protein or if your body isn't digesting or absorbing nutrients well, it becomes much harder to build healthy hair. This is something I see fairly often, especially in women who have been dieting for years, have unintentionally reduced their protein intake, or have experienced rapid weight loss. And speaking of weight loss, this is also something we're seeing more frequently with growing use of GLP1 medications. These medications can be incredibly effective and life-changing for many people. But when weight comes off quickly, the body can temporarily shift more hairs into the shedding phase. Sometimes it's the medication, but more often it's a rapid weight loss itself, along with reduced calorie intake, lower protein intake, or nutritional deficiencies that develop during the process. The encouraging news is that this type of hair loss is often temporary, especially when the underlying contributors are identified and addressed. Nutrition

Iron Stores And Safe Testing

Speaker 14:26

is one piece of the puzzle, but here's another nutrient I pay particularly close attention to because it's one of the most common reasons I see women struggling with hair loss. And that nutrient is iron. Let's talk about iron. When most people think about iron, they think about anemia. They think if I'm not anemic, my iron must be fine. But iron plays many roles throughout the body, and one of them is supporting healthy hair growth. Remember, hair follicles are some of the most metabolically active cells in your body. They are constantly growing, dividing, and producing new hair. That process requires energy and nutrients, including adequate iron. Now that doesn't mean every woman with hair loss has iron deficiency. Far from it. But it does mean that iron is one of the things healthcare providers often consider, especially if a woman has heavy menstrual periods, a history of low iron, restrictive eating patterns, gastrointestinal conditions that affect absorption, or sometimes symptoms like fatigue in addition to hair loss. One thing I also want to mention is something we talked about in the last episode. Laboratory tests are one piece of the puzzle. They're important, but also you have to interpret them in the context of the whole person. Your symptoms, your medical history, your nutrition, your medications, your menstrual history, and your overall health. That's why it's important not to start taking iron supplements just because you read online that iron helps your hair grow. Too little iron can cause problems. Too much iron can also be harmful. The goal isn't simply to raise the number on a laboratory test. The goal is to understand whether iron is actually contributing to your symptoms. And if it is, we need to work with a healthcare provider to address it safely. Iron is one nutrient that deserves attention, but it's certainly not the only one.

Stress, Illness, And The Two-Month Lag

Speaker 16:39

Another factor that can have a profound impact on hair growth, and one we don't talk about nearly enough is stress. And I'm not just talking about feeling overwhelmed. I'm talking about the way your body responds to physical and emotional stress over time. When people hear the word stress, they often think, well, everyone's stressed. But when I say stress, I'm talking about much more than having a busy week. Your body experiences stress in many different ways: a serious illness, a surgery, having a baby, losing a loved one, a divorce, rapid weight loss, starting a new medication, a major infection, even prolonged emotional stress, your body doesn't separate physical stress from emotional stress. It simply recognizes that something significant has happened. And sometimes, instead of each hair following its own schedule, a large number of hairs enter the resting phase at the same time. Then about two to four months later, those hairs begin to shed. That's why women often are confused. They'll tell me nothing stressful was happening when my hair started falling out. And when we step back and look a little further, maybe they had COVID three months ago. Maybe they had a surgery. Maybe they lost 30 pounds. Maybe they were caring for an aging parent. And maybe they were going through a difficult season at work. Suddenly the timeline starts to make sense. And one of the most reassuring things about the timeline, one of the most reassuring things about this type of hair loss is that in many cases, it improves over time as your body recovers from whatever triggered it. Hair grows slowly, so recovery isn't immediate. It requires patience. But understanding why it's happening can ease a lot of fear. And I think that's such an important point. Not every episode of hair loss means permanent hair loss. Sometimes your body is simply recovering from a season that demanded more of it than usual. Stress and illness can absolutely affect hair. Hormones can too. So can iron and nutrients. But there's one more reason we have to be careful about jumping to conclusions.

Why Social Media Advice Fails

Speaker 19:11

Sometimes the answer isn't one thing at all. Sometimes it's several small factors working together. And that's where clinical reasoning becomes so important. Putting the pieces together. By now you've probably noticed a pattern. We've talked about hormones, iron, protein, stress, rapid weight loss, thyroid function, illness, and you may be wondering, so which one of these is causing my hair loss? The honest answer, I don't know. And neither should anyone else without taking the time to understand your story. That's one of the biggest misconceptions I see in social media. Someone posts, I'm losing my hair, what supplement should I take? Within minutes, there are hundreds of comments. Take biotin. It's definitely your thyroid. It's low iron. It's menopause. Try collagen. Oh, you need to use this particular shampoo. The problem is every one of those recommendations assumes we already know the cause. And we don't. Remember what we talked about in the last episode. Medicine is rarely about finding one magic answer. It's about putting together a puzzle. Every symptom, every part of your medical history, every medication, every laboratory result, every lifestyle factor. They're all pieces of that puzzle. Hair loss is no different. Sometimes the answer is obvious and sometimes it is not. And quite often it's not one thing at all. It's a combination of several small things that have slowly added up over time. Maybe it's your estrogen that's declining. Maybe you've undergone a lot of stress recently. You've unintentionally reduced your protein intake. Or maybe you've experienced COVID four months ago, and your iron stores aren't quite where they once were. None of those changes alone might be enough to cause noticeable hair loss, but together, they can absolutely change how your hair grows. And that's why I encourage women not to focus on finding the one cause. Instead ask, what has changed in my health over the last several months? That is a much more beneficial question. And it's often the beginning of finding meaningful answers. So

When To See Your Provider

Speaker 21:35

if your hair loss is persistent, if it's getting progressively worse, or if you're noticing bald patches, scarring of the scalp, or significant itching, redness, or pain, or if your hair loss is accompanied by symptoms like profound fatigue, heavy menstrual bleeding, unexplained weight changes, or other health concerns. Those are good reasons to schedule an appointment with your healthcare provider. Hair loss isn't usually an emergency, but it can be an early cue, it can be an early clue that something else deserves attention. Your healthcare provider may recommend a physical exam, review your medical history, discuss your medications, determine whether lab testing is necessary or a referral to dermatology is appropriate based on your individual situation. The important thing is not to ignore persistent changes, and also not to assume the answer based on something you saw on social media. So, what's the biggest takeaway from today's conversation? Hair loss isn't simply about hair. It's about understanding what your body may be trying to tell you. And sometimes your hair is one of the first places that story becomes visible. If there's one thing I hope you take away from today's episode, it's this. Hair loss is a symptom. It's not a diagnosis. And when it can be incredible And while it can be incredibly frustrating and emotional, it doesn't automatically tell us what's wrong. Instead, it's an invitation to become curious, to ask better questions, to step back and look at the bigger picture, because your hair doesn't exist in isolation. It's influenced by your hormones, your nutrition, your metabolism, your thyroid, your immune system, your stress, and your sleep, and by many systems in your body that work together every single day. That's why I encourage women not to chase the latest supplement, shampoo, or social media trend. Instead, partner with a healthcare provider who will take the time to understand your story. Someone who looks beyond a single symptom, someone who is willing to connect the dots. Because medicine is rarely about finding one magic answer. It's about putting together a puzzle. And every symptom, including changes in your hair, is another piece of the puzzle. One of the most encouraging things I can tell you is that many causes of hair loss are treatable or improve over time. Sometimes it's correcting the nutritional deficiencies. Sometimes it's recovering from illness. Sometimes it's addressing the hormonal changes. Sometimes it's simply giving your body time and support it needs to heal. Your body isn't working against you. It is constantly adapting and protecting you and communicating with you. The more we learn to understand those messages, the better equipped we are to support our health, not just today, but for years to

Key Takeaways And Encouragement

Speaker 24:47

come. Because that's what Healthspan is really about. Not simply living longer, but living well. If you found today's episode helpful, I'd love for you to share it with a friend who's been wondering why her hair has changed. Or leave a review wherever you listen to the podcast. It helps more women discover these conversations and build a community of women who are learning to better understand their bodies. Before we finish today, I want to leave you with one final thought. If you notice changes in your hair, don't assume your body is failing you. More often than not, it's communicating with you. And when you learn to listen, we can begin to ask better questions. Next week, we're continuing the conversation by exploring one of the most misunderstood topics in women's health.

Share, Review, And Next Week’s Topic

Speaker 25:36

Stress. Is cortisol really to blame? What does chronic stress actually do to our body? And why have so many women been told they have adrenal fatigue when the science tells a much more complete story? And if you've ever wondered whether stress is affecting your sleep, your hormones, your weight, your mood, or even your overall health, you won't want to miss that episode. And if you'd like to connect with me or explore more resources, you can find me at rootandremedyc.com or through the links in today's show notes. Thank you so much for spending part of your day with me. Until next time, remember your body isn't working against you, it's communicating with you. And every symptom is an opportunity to better understand the remarkable woman you are becoming. Take care and I'll see you next week.