Under-Fueling: How This Metabolic Stressor Bites You in the Midlife Ass

April 21, 2026

Elegantly Unhinged

Ep: 7, Under-Fueling: How This Metabolic Stressor Bites You in the Midlife Ass

You think you're eating lightly. Your body thinks it's surviving.

This week, we're talking about one of the most overlooked stressors in midlife women's health: under-fueling. Not the dramatic, obvious kind—the sneaky, socially acceptable, "...but I'm being healthy" kind.

The coffee-for-breakfast kind. The sad desk tiny salad kind. The "I was good all day and then ate everything in sight at 9pm" kind.

After a car accident this week that rattled me more than I expected, every single provider I saw said the same thing: support your nervous system. And it hit me—under-fueling is doing the exact opposite, quietly, every single day.

In this episode we cover:

·       What under-fueling actually looks like in real life (hint: it's probably not what you think)

·       What your body is doing behind the scenes when fuel is inconsistent

·       Why midlife makes this so much harder to ignore

·       Why food is one of the most direct ways to signal safety to your nervous system

·       What "eating enough" actually looks like—practically, not perfectly

Closing question to sit with: Am I actually supporting my body… or am I still subtly depriving it?

Mentioned in this episode:

Blog post on Nervous System-Friendly Breakfasts for Stable Blood Sugar Energy Metabolism

Check out more:

Subscribe to our Smart Mouth Nutrition newsletter here.

Learn more about my Smart Mouth Nutrition Metabolic Reset program here.

For questions, contact: rima@smartmouthnutrition.com

Disclaimer:

This podcast is for educational purposes only and is not intended as medical advice. Always consult with your healthcare provider before making changes to your diet, supplements, or health routine.

Elegantly Unhinged is a podcast for women who look fine on the outside—but are doing deep, brave, disruptive inner work behind the scenes. Hosted by integrative and functional dietitian-nutritionist Rima Kleiner, this podcast explores midlife, body trust, nervous system health, nourishment, identity shifts and what happens when women stop playing small.

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Transcript

Speaker 0:00

Hello and welcome back. And if you're new here, I'm really glad you're joining us today. Okay, quick life update before we dive in. I was in a car accident last week at the time of this recording. I'm okay, but it shook me more than I expected. And what really stood out to me was this. Every single provider I saw, my doctor, my coach, my new physical therapist, said some version of the same thing. Take time to process and support your nervous system. Not just physically recover, not just you're fine, move on, but actually take the time to let my body process what happened. And even as someone who talks about nervous system health all the time, my first instinct was still to override it, to move on quickly, create distance from the discomfort, stop replaying that moment in my head, and to get back to normal. Because that's what we do, right? We push through, we override, we don't rest, we don't slow down. And another big one I see constantly, especially in the women I work with, is we don't eat enough. And then we sit there wondering why our body feels off, reactive, exhausted, inflamed, pissed at us, like it's working against us. So today I want to talk about one of the biggest and most overlooked stressors I see in midlife women: under-fueling. Now, contrary to what many people think, most women I work with are not overeating. They are under-fueling in really sneaky, socially acceptable, this looks healthy, even subconsciously ways. And those look like coffee for breakfast and calling that I'm just not hungry, a light lunch that's basically a side salad with vibes and no real protein, picking at food all day but never actually eating a full meal, long gaps, like five, six, sometimes even seven hours between meals, and I see this a lot between lunch and dinner, being so good all day and then feeling out of control at night or on weekends. And a big one I see with active women is not eating enough on workout days. And here's the thing: you may feel fueled, but if you're running on caffeine with no food or working out with too little protein or any of those other things I just mentioned, your body experiences it as inconsistency and scarcity. And to the body, inconsistency equals stress. Now, your body's job is survival, not aesthetics. And as hard as you might try, you can't change the body's priority. So when fuel is inconsistent or insufficient, your body doesn't go, cool, now I can finally lose 10 pounds. It goes instead, something is off. We need to adapt right now. And that adaptation often looks like cortisol rising to keep you going when fuel levels are low, blood sugar becoming unstable, spikes, crashes, and cravings, you know the cycle. Your metabolism becoming more efficient. And by this I mean your metabolism conserving energy, not burning more energy. Hunger cues getting louder, angrier, or sometimes totally dysregulated. And one of the most important ones, muscle breakdown increases. And in midlife, this one matters a lot because muscle is metabolic currency. It's your blood sugar buffer, it's your resilience. And here's the thing: unless you are actively lifting and working out to build new or at least preserve existing muscle, then you are losing muscle each year as you age, folks. We just are. So when you're under-eating, you're not being disciplined, you're quietly working against the exact body you're trying to build. And let's talk about why this hits harder in midlife. Because yes, it's totally rude, but true. Because under-fueling is never great, but midlife is where it really starts to show up. You've got hormonal shifts that mean less flexibility and more resistance. A naturally declining muscle baseline, meaning you need more support, not less. A nervous system that's already carrying a really heavy load. And let's be honest, a life that is just full. You're probably caring for kids and possibly aging parents, working hard at heart at work, working hard at relationships, managing finances, and somewhere in there, your body starts to feel like it's no longer cooperating. And the instinct tends to be eat less, control more. But midlife, I'd like to argue, is not the time to shrink. It's the time to support. Now your body doesn't categorize stress the way your brain does. It's not saying this is emotional stress and this is a car accident, and this is not eating enough. It just registers stress is stress. So when you're under fueling, your body feels unsafe. Same signal, different source. And just like after something acute, like my accident, the body is asking for consistency, nourishment, predictability, and safety. And friends, food is one of the most direct ways that you can give it those things. So, what does this eating enough actually look like in real life? Well, let's start with this is not about perfection. It's not about tracking every bite, and it's definitely not about obsessing. What it is about is support. It's about giving your body what it actually needs to feel safe and steady. So, four things I'm going to talk about. One, prioritize protein at meals, not as an afterthought, but built in. So think chicken, turkey, fish, and other seafood, eggs, lean red meat, yogurt, cottage cheese, edamame, tempeh, tofu, and quinoa. Secondly, fill up on fiber from a variety of foods, not just one salad or sad vegetable at dinner. You want to aim for multiple sources every day, like vegetables, fruits, beans, legumes, nuts, seeds, and whole grains like oatmeal, brown or wild rice, popcorn, and sorghum. Third, flavor with fat because fat satisfies you, so you're not hunting for snacks an hour later. Think about heart-healthy sources like olive oil, fatty fish, avocados, nuts, and seeds. And lastly, space your meals in a way that keeps your body feeling steady and steady, not chaotic. Not noshing all day, but also not going hours and hours between meals either. And honestly, for a lot of women, this looks like eating more than they're currently eating, especially at breakfast. Because breakfast isn't just about food, it's about telling your body, we're safe, fuel is coming, you don't need to conserve. And actually, research has shown skipping that AM meal sends your body the message to conserve energy rather than burn incoming calories, which is not supportive for your metabolism or nervous system, and it's definitely not what most of us actually want. And just as a side note, if you're looking for easy breakfasts that support the nervous system and blood sugar, check out the link in the show notes for a blog post I just wrote on this exact thing. I shared a lot of breakfast ideas for every kind of morning and different kinds of eaters. Okay, now I want to shift gears slightly because the food piece is practical, but what I'm going to say next is the thing that underlies all of it. And this is the part I really don't want you to skip past. A lot of women are still eating to be smaller, to be quieter, to take up less space, to stay in control. And I get it because that messaging has been everywhere for most, if not all, of our lives. Diet culture didn't just teach us what to eat. It taught us what kind of woman to be. Small, disciplined, contained. But here's what I want you to notice: that framework was never about your health. It was about your compliance. And midlife has a way of making that really clear because the old playbook stops working. Your body isn't responding the way it used to. And instead of asking why, the instinct is to double down, restrict more, and control more. But your body in midlife isn't being difficult, it's being honest. It's telling you that it needs something different now. Not less, but more. More nourishment, more consistency, more trust. What your body actually needs, especially during the season of life, is support, not restriction. Strength, not depletion, stability, not control. And to wrap this up, one of the ideas I come back to again and again is this metabolic health isn't built through restriction. It's built through regulation. And regulation includes something that sounds simple, but is actually really uncomfortable for a lot of women eating enough, enough to support your metabolism, enough to support your hormones, enough to support your nervous system. Because stubborn weight, blood sugar issues, gut or GI symptoms, they don't resolve long term in a body that feels under-supported. And sometimes the most regulating thing that you can do is eat consistently, adequately, without feeling like you need to earn it. Now, final note to wrap up this episode, I'd like to leave you with one question to sit with today. It's am I actually supporting my body or am I subtly depriving it? Then listen closely to how your body responds. It will tell you you just need to listen. All right, that's all I have, friends. Thank you for joining today. I really appreciate you being here. And if you enjoyed this episode, please share it with a friend. And if you have a topic you'd like to see covered, please share. Share in the notes. I would love to hear from you.