The conversation
In the second episode of Project Longevity’s Season 2, host Caulen Foster sits down with Dani Marenburg, a San Diego–based, double-certified nutrition coach who has helped thousands of women rebuild their confidence, energy, and well-being through smart nutrition and sustainable habits. Dani is the founder of Mindin’ My Macros and the host of the Mindin’ My Wellness podcast, which regularly ranks among the top nutrition shows on Apple Podcasts.
What makes her perspective land is that it’s lived as much as studied. Dani came to nutrition not as a lifelong expert but as someone who once felt completely at odds with food, and who has had to find her way back to the fundamentals more than once—most recently after becoming a mom. Across the episode, she and Caulen dismantle the “good food versus bad food” mindset, dig into how hormones shape the way women eat, and land on a message that’s empowering rather than restrictive: sustainable nutrition is about patterns over time, not perfection in any single meal.
Prefer listening instead? Tune in to Project Longevity: Season 2, Episode 2 with Dani Marenburg on Spotify, Apple Podcasts, Amazon Music, and other major podcast platforms.
Nutrition became Dani’s answer only after she stopped chasing a smaller body
Dani is candid that she didn’t start out with any real understanding of food. She grew up with little nutrition education, and it wasn’t until college—when she gained weight and felt uncomfortable in her body—that the gap became impossible to ignore. As a lifelong athlete, she realized the missing piece had never been movement. It was nutrition.
After moving to health-conscious San Diego, she went back to study the subject seriously. What she found was an overwhelming amount of information, and the thing that finally worked for her was stripping it all back to the fundamentals.
The turning point, though, wasn’t physical. As she cleaned up how she ate, she noticed her energy climbing and her mental clarity sharpening—and those changes mattered to her far more than any change on the scale. That shift, from chasing appearance to chasing how she felt, became the foundation of the business she runs today.
There are no “good” or “bad” foods—only the inputs your body reads over time
For years, Dani believed the only path was strict restriction: cut the dairy, cut the “bad” foods, eat only what looked virtuous. It never lasted. She’d hold the line for a few days, then fall off entirely and conclude that she’d failed.
What changed everything was learning to think in macronutrients rather than in moral categories. Instead of asking whether a food was good or bad, she started asking what it was made of—protein, fat, carbohydrate, or some combination. From that vantage point, restriction stopped being the point and balance took its place.
One of her most clarifying lines captures the whole philosophy: “Your body isn’t looking at specific foods. It’s looking at inputs over time.” A single croissant—and she’ll happily admit she loves a good croissant—doesn’t ruin a day. What matters is the pattern.
The guilt around food is often the real problem, not the food itself
Caulen zeroes in on something many people quietly wrestle with: the guilt that shows up even when a meal is both healthy and enjoyable. Dani knows it well, because it was her own sticking point for a long time.
Her answer is that guilt tends to grow out of the all-or-nothing mindset itself. When one “off-plan” bite feels like proof the whole day is wrecked, the guilt isn’t really about the food—it’s about the rigid story wrapped around it.
The way out, in her experience, is learning to position meals across a day and a week rather than judging each one in isolation—a reframe that shares a lot of ground with the principles of intuitive eating. When there’s room for dessert, dinners out, and the occasional croissant inside a balanced whole, the guilt loses its grip. Food becomes something to enjoy again, not something to survive.
Most diet confusion comes down to three misconceptions
Asked about the myths she sees most often among women, Dani names three. The first is the good-food-versus-bad-food framing—the belief that whole food groups, like carbohydrates, have to be eliminated rather than understood.
The second is a misunderstanding of sugar. Not all sugar is created equal, she explains, and lumping fruit in with candy is a common mistake. A banana carries fiber alongside its natural sugar, which changes how the body handles it—a very different thing from a handful of pure-sugar candy.
The third is the belief that eating as little as possible is the way to lose or maintain weight. That one, she says, may do the most harm of all—which leads directly into the next part of the conversation.
Eating too little for too long can quietly work against you
Dani is direct about the very-low-calorie diets that dominated the wellness world for years: for most women, they’re a misconception that can backfire. Eating too few calories for too long may downregulate the metabolism7—an effect she feels isn’t discussed nearly enough.
She’s careful to draw a distinction. A structured, intentional calorie deficit can support fat loss and body-composition change. That’s different from chronically undereating in an attempt to hold a certain weight, which tends to leave people depleted and stuck.
The takeaway she keeps returning to is that the body adapts to what you give it. Feed it too little for too long, and it adjusts downward. Sustainable change, in her view, comes from eating enough to support the body, not from starving it.
Your metabolism probably isn’t slowing because of your age
One of the most freeing ideas in the episode is Dani’s pushback on the assumption that a slowing metabolism is simply the price of getting older. Research on daily energy expenditure across the lifespan suggests metabolism holds remarkably steady from about age 20 to 60, rather than declining steadily through the decades many people worry about.1 If that runs counter to everything you’ve been told, it’s worth understanding what actually happens to metabolism as you age.
So what’s actually happening when energy dips and the scale creeps? Usually, Dani says, it’s a lifestyle shift. Someone who was highly active as a kid becomes far more sedentary through their 20s, 30s, and 40s—and the body responds to that reduced input.
Years of aggressive dieting can play a role too, since metabolism adapts to caloric intake over time. The reassuring part is that these are inputs a person can influence, not an inevitable slide dictated by a birthday.
Women’s bodies respond to food differently across the menstrual cycle
When Caulen turns the conversation toward hormones, Dani makes a point that reframes a lot of nutrition advice: for most of research history, studies centered on men, and women weren’t meaningfully included until relatively recently.2 That gap left many women following guidance never designed for their physiology.
What we’ve since learned is that a woman’s response to fat loss and body recomposition can shift across her menstrual cycle.3 For that reason, Dani starts not with a physique goal but with the cycle itself—understanding where a woman is in it, and supporting a healthy cycle first.
The hormones at play in the later luteal and menstrual phases can influence hunger signals like ghrelin and leptin, which is why so many women feel hungrier and less satisfied around their periods.3 As Dani puts it, that’s biology, not a lack of willpower.
Nutrition can shift with your cycle’s phases
Dani is quick to note that no two women experience their cycles identically—some barely notice a shift, others feel it strongly. Still, she works from a general rule of thumb.
In the earlier follicular and ovulatory phases, the body tends to be more responsive to carbohydrates and calories, and higher-intensity training often feels good. As a woman moves into the luteal and menstrual phases, she may feel more resistant to that heavy output.
During those later phases, Dani leans toward being a little more mindful of carbohydrates and leaning into fat and protein, which she finds the most satiating. It’s not a rigid protocol so much as a way of meeting the body where it is at each point in the month.
Carbs aren’t the enemy of energy—fiber is the missing piece
For women who feel constantly low on energy, Dani’s first nutrition move is often counterintuitive: stop fearing carbohydrates. If you’re dragging through workouts, adequate carbs—and the right kinds—may be exactly what’s missing. It’s a useful lens for auditing your plate, since the foods that support steady energy are often the first things restrictive diets cut.
She’s especially passionate about fiber, which she calls one of the most underconsumed nutrients among women and men alike. Many people fall short of even the roughly 25 grams a day generally recommended, and closing that gap can make a real difference in energy and clarity.4,5
Her practical target is at least 25 grams daily, with 25 to 35 grams as a useful range and 35 as an optimal-but-ambitious ceiling. Especially in the first half of the cycle, she finds fiber can quietly move the needle on how people feel.
Whole foods are Dani’s go-to for fiber
When it comes to hitting those fiber numbers, Dani prefers food over supplements wherever possible. Fiber supplements have their place, but whole foods bring more to the table.
Her favorites are approachable and easy to work in: berries, which are high in fiber and low enough in calories to enjoy generously; chia seeds; and legumes like black beans and chickpeas. She tosses black beans into all kinds of meals almost by default.
She’s also a devoted fan of chickpea pasta, which she swaps in for traditional pasta to add both fiber and protein. Small, sustainable substitutions like that are the heart of her approach—changes that upgrade a meal without demanding a total overhaul.
Breakfast sets the tone for the entire day
If Dani has one non-negotiable, it’s breakfast. She sees a familiar pattern in women who struggle with nighttime snacking: coffee and a banana in the morning, a light salad at lunch, and then relentless grazing from the moment dinner prep begins.
The fix is fueling properly earlier. She favors a protein-forward breakfast—at least 30 grams, and closer to 40 when possible—paired with healthy fats and a good source of fiber. Greek yogurt with chia seeds, or oatmeal with a banana, does the job simply, and a rotation of high-protein breakfast ideas makes that target easier to hit on the mornings you don’t want to think about it.
Coffee and a banana alone, by contrast, she names as one of the tougher ways to start the day, because the blood-sugar spike can drive cravings and the classic mid-afternoon crash. If 2 or 3 p.m. reliably brings a slump, she suggests looking back at breakfast first.
Building meals around protein makes everything else easier
When Caulen presses for hard numbers, Dani is refreshingly honest that there’s no single answer—a six-foot person and a five-foot person simply have very different needs. Still, she offers a framework anyone can use.
Build each meal around protein first, aiming for at least 30 grams, and let the rest of the plate follow.6 For fat, she suggests a simple visual cue—roughly a thumb-sized portion—since fat is more calorie-dense than protein or carbohydrate and easy to overlook.
A common blind spot she sees in women is underestimating fat while undereating carbohydrates, which leaves meals unbalanced and unsatisfying. The goal isn’t perfection or precision tracking—it’s building plates that leave you full, energized, and able to listen to your body.
Dani’s own comeback came after becoming a mom
Every Project Longevity guest is asked about their comeback story, and Dani’s is strikingly honest: even as a nutrition expert, she struggled to follow her own advice after having her daughter a year and a half ago. Her first year postpartum was hard.
Everything she taught was still true and still ingrained—but her life had changed completely, and what had worked before no longer fit. Rather than falling back into the all-or-nothing trap, she returned to the very foundations she coaches. “It felt like starting from ground zero for a second time,” she admits.
She didn’t reach for calorie tracking. She focused on the basics: eating breakfast, getting at least 30 grams of protein per meal, hitting her fiber, and building slowly from there. As Caulen reflects, she was meeting herself where she was—not chasing someone else’s standard, but starting from her own reality. That, in the end, is the whole message.
The Bigger Picture
Strip away the macros and the cycle phases, and Dani’s philosophy comes down to a single idea: sustainable nutrition is about patterns, not perfection. The body reads inputs over time, which means one meal never makes or breaks anything—and the pressure people put on individual food choices is usually the thing standing in their way.
That reframing does something bigger than change a grocery list. It removes the guilt and the all-or-nothing thinking that send so many people cycling between restriction and rebound. In their place is a more forgiving, more durable relationship with food—one that flexes around real life, real hormones, and the seasons that reshape our routines.
Perhaps the most resonant thread is the one Dani lived twice: falling off isn’t failure, and getting back doesn’t mean starting from zero. Whether the disruption is college, a career shift, or a newborn, the path forward is the same—return to the fundamentals, meet yourself where you are, and build from there.
Enjoyed this conversation? Revisit our Season 2 premiere with Dr. Stephanie Chan on hormone balance, fertility, and perimenopause—a natural companion to Dani’s take on food and the female body.
