Appetite Signals Decoded: Why Clients Stay Hungry Despite Eating Well

What’s Inside This Episode

• Why appetite is a communication system, not just a numbers problem
• How ghrelin, leptin, insulin, GLP-1, PYY, and CCK work together to signal satiety
• The hidden impact of stress, sleep, and reward pathways on cravings
• How muscle, metabolism, and the microbiome shape hunger signals
• Why post-meal hunger often reflects systemic dysfunction
• A pattern-based approach to uncover root causes of persistent appetite issues

Resources and Links:

• • • Download the full transcript here
    • Get your FREE Beyond Protocols Guide: A structured framework for identifying root-cause patterns and sequencing interventions
    • Join the Next-Level Health Practitioner Facebook group here for free resources and community support
    • Visit INEMethod.com for advanced health practitioner training and tools to elevate your clinical skills and grow your practice by getting life-changing results. 
    • Check out other podcast episodes here

 

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Transcript

 

Dr Ritamarie 

Why do some people feel satisfied after eating a meal while others feel like they could keep eating all night? Why can someone eat enough calories but still feel driven to snack? And why do cravings get worse when sleep is poor? Why does stress make certain foods almost impossible to resist? And why does telling someone to just have more willpower almost never work? 

 

Appetite is not controlled by willpower alone. Appetite is controlled by hormones, the brain, the gut, the microbiome, the nervous system, blood sugar, sleep, stress, muscle, inflammation, and nutrient status. GLP-1 is one important piece of that puzzle, but it's not the whole appetite story. 

 

Today we're going to look at the larger endocrinology of appetite, the hunger hormones, the fullness hormones, the blood sugar signals, the stress signals, and the brain reward signals.

 

Patterns that practitioners need to recognize if they want to help people move beyond cravings, overeating, and metabolic chaos are complicated.  

 

This is the third episode in our GLP-1 and Appetite series.

 

In the first episode of the series, we talked about how to naturally stimulate GLP-1. In the last episode, we talked about why GLP-1 may not be working and why fullness in the stomach does not always become satiety in the brain. 

 

Today we're widening the lens because appetite isn't controlled by one hormone. It's a symphony that needs to work harmoniously together. And when the symphony is well coordinated, the body knows when to eat, what to eat, when to stop, and how to use the energy that comes in. When the signals are disrupted, people feel hungry when they're not truly nourished, crave foods that they don't really want to be eating, eat past fullness, or have a hard time fighting them. It's not a character flaw, it's dysregulated communication in the body. 

 

Before we dive in, I want to make sure that I mentioned my free practitioner guide. Beyond Protocols:A Practitioner's Guide to Root Cause Pattern Recognition.

 

This episode is a perfect example of why protocols aren't enough. Two people may struggle with cravings, but one might be dealing with blood sugar swings, another with sleep dysregulation, another with chronic stress, another with leptin resistance, and another with inadequate protein or poor gut signaling. 

 

The solution depends on the pattern. We can't just make up a protocol for a condition. You can download the guide by looking at the link in the show notes.

 

Let's talk about the hidden hormones behind appetite.

 

Appetite isn't just one signal. It's a communication system. The stomach, the intestines, the pancreas, the liver, the fat cells, the muscles, the brain, they all communicate as part of this system. Even the adrenal glands and the microbiome, the nervous system. The nervous system is really important to help coordinate the whole conversation. 

 

So the Eat Less, Move More is just an incomplete approach, and this is why. It assumes appetite's a math problem, but in real life, appetite is a biology and a physiology and a biochemistry problem. It's a hormone disruption problem and a nervous system problem and a nutrient sensing problem. It's also a sleep problem, a stress problem, a blood sugar balance problem, and a microbiome balance problem. 

 

Often it's related to emotional regulation and it's an emotional regulation problem, because we reach for food for calmness. Food isn't just calories, food is information. It's information to the body. Appetite is one of the ways the body responds to that information. 

 

Dr Ritamarie (04:30)

Let's begin with ghrelin. Ghrelin is often called the hunger hormone. It's produced primarily in the stomach, and it tends to rise before meals, like when we're hungry. It tells the brain, “Hey, it may be time to eat,” but ghrelin isn't an enemy, because we need hunger signals. Hunger helps us survive, obviously. The problem isn't that ghrelin exists. The problem is that when hunger signals become exaggerated or poorly timed or disconnected from our true physiological need, it's a problem. 

 

Ghrelin can be affected by sleep. Ghrelin goes up when we don't sleep enough, which is why we get hungry after a bad night's sleep. When sleep is inadequate, hunger increases, and we just can't resist. Ghrelin can be affected by meal timing. It can rise when the body has learned to expect food at certain times.

 

It can be affected by dieting and under-eating and then just maybe there all the time. When people restrict too aggressively, the body may respond by increasing hunger and increasing ghrelin. It can interact with reward pathways in the brain, right? So if someone says I'm hungry all the time, we need to ask, are they undereating? Are they eating enough protein? Are they sleeping? Are they on a restrictive diet that's triggering a compensatory hunger response?

 

Or, are they skipping meals and then overeating later? Are they confusing stress, fatigue, or emotional discomfort with hunger? Ghrelin is a signal. We don't want to shame that signal. We need to interpret the signal. 

 

The next hormone I want to talk about is leptin. Leptin is produced by fat cells, and it's kind of the opposite. It communicates with the brain about our energy stores. In a healthy system, when energy stores are adequate, leptin signals that the body has enough stored energy to stop eating. It turns off the appetite. 

 

In many people with extra fat, leptin levels may be high while the brain isn't responding appropriately. We call this leptin resistance. In that situation, the body may have plenty of stored energy, but the brain doesn't actively receive that message and it still behaves as if energy availability is uncertain.

 

Dr Ritamarie (06:40)

We need more, so it doesn't turn off the appetite. That affects cravings, that affects thyroid signaling, that affects reproductive hormones and immune function and metabolic rate. Leptin resistance is one reason that simply telling somebody with weight challenges to eat less can backfire. The brain may not feel safe, the appetite may increase, and the energy expenditure then decreases, and that increases the cravings, the intensity of the cravings.

 

The body may become more efficient at conserving energy. So again, it's not about a character flaw. It's not about lack of willpower. It's about body signaling, hormonal signaling.

 

Let's talk about what contributes to leptin resistance. Things like inflammation and insulin resistance and poor sleep and circadian disruption. Not sleeping at the right time and light at the wrong time, overly processed foods, high triglycerides, even, can contribute to leptin resistance.

 

Stress. We’ve got a lot of that in our lives. Environmental factors. Toxins in the body disrupt hormones. Loss of metabolic flexibility, which about 93% of the population has right now. The goal is not to force weight loss, the goal is to resolve the brain's ability to hear the metabolic signals. That requires lowering inflammation, stabilizing blood sugar, improving sleep, building muscle, improving the quality of the food, supporting the microbiome, and creating a body that feels safe. 

 

Insulin is usually only discussed in relationship to blood sugar, but insulin also affects appetite. When insulin signaling is healthy, the body can move the glucose into the cells efficiently and energy appropriately, and everything stays stable. When insulin resistance develops, the communication is distorted. The pancreas may produce more insulin just to handle the amount of glucose, even if it doesn't change. The liver continues to release glucose, stored glucose, and the muscles may not take up the glucose sufficiently. 

 

The blood sugar may be up and down, up and down, and the brain may receive inconsistent energy signals. This can drive hunger and cravings, especially cravings for quick energy. If glucose rises rapidly and then drops, the body may interpret that drop as a threat and produce more cortisol, and the person may become shaky and irritable and anxious or tired and suddenly want something sweet.

 

Dr Ritamarie (09:05)

It's not a moral failure, it's not a willpower failure, it's just physiology. 

 

For practitioners, it means that cravings after a meal are often a clue. When a craving happens two hours after a meal, it may suggest that the meal didn't provide stable energy and may have been too high in refined carbs, it might have been too low in protein or fiber or fat. Maybe it may have been too low in minerals, or it may have been eaten under stress, and we didn't actually absorb it properly. It may also reveal insulin resistance, poor muscle glucose uptake, and sleep-related metabolic disruption.

 

That's why postmeal glucose patterns are so helpful, and that's why I love CGMs. We need to see what the body is doing with the food, not just what the person intended to eat. What is it doing? 

 

Let's come back to GLP-1, but this time as part of a team of hormones. It helps regulate insulin secretion, glucagon-like peptide. Gastric emptying and satiety. Peptide YY or PYY is another gut derived hormone that helps signal fullness and reduce appetite after eating. CCK or cholecystokinin is released in response to fat and protein and helps stimulate bile release, pancreatic enzyme secretion, and satiety so we can absorb this stuff. 

 

The hormones help the body say, “Nutrients have arrived! Slow down, digest, absorb, and let's signal fullness. Let's feel that fullness and coordinate all the metabolic signals.”

 

Those signals depend on the meal and the terrain. What is the protein of the meal? What is the fat quality? How much fiber is there? Bitter foods. Bitter foods help stimulate that digestion. Digestive function matters hugely, and the microbiome quality, the microbiome in the body signals that there's some things going on.

 

Dr Ritamarie (10:59)

Digestive function matters. The microbiome matters. The nervous system matters a lot. If somebody's eating an ultra-processed diet, and they're eating quickly while stressed, sleep-deprived, inflamed, and insulin resistant.

 

The satiety conversation is going to be weak, it's going to be delayed, and it's going to be overridden by reward pathways. What does that mean? The same number of calories can have very different effects.  People are going to have cravings. 

A bowl of lentils with greens and herbs and tahini and flax and spices sends a very different signal than a processed snack with the same number of calories. One nourishes, one communicates. The other may stimulate reward without creating lasting satiety. 

 

Now let's shift the gears and talk about cortisol. Cortisol isn't bad, it gets a bad rap. We need cortisol. It helps us wake up in the morning, it helps mobilize energy, it helps us respond to stress. It's really important. 

 

Chronic stress, chronic cortisol secretion, changes things. It changes the appetite. For some people, stress suppresses the appetite temporarily. For others, for I think many and most, stress increases cravings, especially for those sweet and salty and fatty and crunchy or highly rewarding foods. Why is that? The body responds under stress, looking for quick energy and quick regulation.

 

Stress can raise glucose. It's cortisol raises glucose. It can increase insulin resistance and interfere with digestion, turns off the enzymes, shuts down the sphincters. It can alter the microbiome, and it can change sleep, tossing and turning because of stress. It changes decision making, changes the way the body becomes reactive to high-reward foods and searches them out.

 

Dr Ritamarie (12:47)

When someone says I don't know what to eat, but at night I lose control, we need to ask what happened during the day. Were they under stress all day? Did they eat enough? Did they pause? Did they breathe? All these things matter and make a huge difference. Do they regulate their nervous system? Did they sleep the night before? Did they spend the entire day in sympathetic overdrive? Most people do. Sometimes nighttime eating is not about the food at all. It's about finally trying to regulate after an entire day of just pushing and pushing and pushing.

 

This is where compassion comes in when we're talking to people. People aren't machines, they're living systems, and appetite often reflects the state of the nervous system. 

 

We also need to talk about dopamine and reward when we're talking about appetite. It’s super important. Dopamine is a neurotransmitter, but it's often considered a part of the neuroendocrine system. It has a kind of hormonal impact as well.

 

Not all eating is driven by hunger. Some are driven by the reward, looking for reward. Highly processed foods are designed to be easy to overeat. They combine sugar and refined starch and fat and salt and flavorings and textures in a way that stimulates the brain's reward pathways. They're often soft enough to eat quickly and require very little chewing. They deliver rapid energy. They bypass many of the normal satiety signals that intact foods provide.

 

They can make whole foods seem less exciting by comparison. This doesn't mean pleasure is bad. Food should be pleasurable, but there's a difference between natural pleasure and engineered hyper palatability, which is what happens with these processed foods. They're looking for the bliss factor. 

 

A ripe berry is pleasurable, a beautiful lentil dish with herbs and spices can be pleasurable. A creamy tahini dressing in my world is very pleasurable, but ultra-processed foods can create a level of stimulation that makes appetite regulation harder. They're pleasurable in a very different way. 

 

As practitioners, we need to understand this. A client may not be addicted in a simplistic sense, but the reward pathways may be conditioned to these specific foods. The environment may be working against them. Their stress may amplify the drive. Their sleep, lack of it, may be weakening impulse control. Blood sugar may be creating an urgency to get that food in, and their meals may not be providing enough satiety. 

 

Dr Ritamarie (15:13)

Again, we need to look at patterns, patterns, patterns, patterns. Appetites are also affected by thyroid and sex hormones, believe it or not. Low thyroid function, of course, reduces metabolic rate, but it alters gut motility, affects energy, and contributes to weight challenges. Estrogen shifts can affect insulin sensitivity and leptin and body composition, satiety, mood, and cravings.

 

Things happen at menopause. Progesterone changes things, fluid retention, temperature, mood. Perimenopause and menopause are especially important, because many women notice that their strategies no longer work, and they may gain weight around the middle and have more cravings, sleep less deeply, and lose muscle more easily. They may become more insulin resistant, and it's not because they suddenly lost discipline. The hormonal terrain has changed, so the plan must change. 

 

Protein becomes more important. Strength training becomes way more important. Sleep becomes more important, and yet the dichotomy is that it's difficult when we hit perimenopause. Stress regulation is super important, and inflammation, control of inflammation, is way more important. 

 

That's why I always ask practitioners to ask questions. What stage of life is the person in? What's their hormonal terrain? Appetite doesn't exist in isolation.

 

One of the most overlooked pieces of appetite regulation is muscle. Muscle is not just for strength and appearance and strong bones and all that. It's a metabolic organ. It clears glucose from the bloodstream. It stores glycogen, the storage form of glucose. It influences insulin sensitivity. 

 

Strong muscles are much more sensitive to the signals of insulin than non-trained muscles. It produces myokines and affects metabolic flexibility. It changes how the body handles energy. A person with more muscle has very different glucose and appetite landscape than someone with low muscle mass and poor mitochondrial function. 

 

Weight loss without muscle preservation can create problems, which is what we're seeing a lot of in people who are just shooting up GLPs and not addressing the diet and the exercise. A person can become smaller, but less metabolically capable and have lower energy expenditure, less glucose disposal capacity and more frailty. 

 

It's more difficult to maintain weight loss in this situation, and the cravings, when you're under-muscled and undernourished, are harder to control. 

 

When we talk about appetite, we need to talk about strength. Strength training is not optional for metabolic resilience. Not optional. One of the ways we teach the body to use fuel more effectively is by strength training.

 

Dr Ritamarie (17:58)

Movement is information, just like all the foods we talked about. Muscle contractions send information, and the body is constantly listening to all this information. 

 

How do we use all this clinically, when someone has cravings, is overeating, experiences poor satiety, or has hunger that feels out of proportion. Don't stop at what they are eating. 

 

Ask, well, what are they eating? What's the composition? Are they getting enough protein? Are they eating enough early in the day? Or are they just waiting until later in the day? Are they getting enough fiber and resistant starch? How are they digesting? Are they constipated? Is the microbiome producing satiety supportive metabolites? Is the blood sugar stable? Are they insulin resistant? Are they sleeping? 

 

Are they under chronic stress? Most people have exposure to stress. How are they handling it? Do they have tools? Are they losing muscle or are they strength training and putting on muscle? Are they in perimenopause or menopause? That's a big difference between premenopause. Are they exposed to highly processed foods that are triggering them? Are they eating in a sympathetic state, or are they stopping and calming? Are they nourished or only full? There's a big difference. 

 

There's a difference between a protocol and a root cause framework. Protocol says here's the plan. A root cause framework asks what's driving this pattern in this person. That's the work of the future practitioner, and that's why I continue to point you to the Beyond Protocols: Practitioner's Guide to Root Cause Pattern Recognition, because appetite symptoms can look similar on the surface, but underneath, the drivers may be completely different.

 

Blood sugar, leptin resistance, poor sleep, low protein. I keep repeating these, and I keep repeating them for a reason, because they are so important. We need to keep them in mind. Low muscle, stress physiology, gut dysfunction, microbiome balance, reward pathway conditioning, hormonal shifts, inflammation. All of these are important. 

 

When you can identify the pattern, you can create a clear plan that makes sense and can work in this particular person that's personalized for this person. Download the guide from the show notes and let's pull all this together. 

 

Appetite isn't willpower. By now, you should realize that. It's communication. It's communication between the hormones and the neurotransmitters in the body. Ghrelin signals hunger, leptin signals satiety, insulin helps regulate blood sugar and energy handling.

 

GLP-1, PYY, peptide YY, and CCK, cholecystokinin help communicate satiety. Cortisol links stress to appetite. Dopamine influences cravings and reward. Thyroid and sex hormones shape the metabolic terrain, and the microbiome translates food into metabolites and signals. Muscle affects glucose disposal and metabolic flexibility. Sleep and circadian rhythm regulate the entire conversation. 

 

When appetite feels chaotic, the solution is not to shame someone and not to tell them to have more willpower. The solution is investigation, digging deep to see where the communication is breaking down and what signals are missing. What signal is too loud, and what signal is being ignored? What conditions do we need to restore, so the body can regulate appetite the way it was designed to? It was designed beautifully to do that. 

 

In the next episode, we'll begin translating this into practical meal building and daily rhythm strategies. Once you understand the appetite hormones, the next question becomes: how do I design a day of eating, movement, sleep, and stress regulation that sends the right signals at the right time? That's where physiology becomes practical. As we talk about appetite with clients, it's important to give the message: your body's not failing you, it's talking to you.

 

Hunger is communication as is craving. Cravings are communication. Satiety is communication, and energy is communication. Blood sugar is communication. All of this is communication, and how we respond to that is important. It's not how do we silence the body from these cravings? 

 

The question we really need to be asking is how do we understand what the body's trying to say? That's how we reinvent healthcare, not by blaming people, not by telling them to have more willpower, not by chasing trends, not by handling everyone the same but by understanding these systems, identifying patterns and restoring conditions that allow the body to work in the way it's designed to work. 

 

If this episode helped you to see appetite in a new way, share it with a colleague, a client, a friend, or family member who needs to hear that cravings aren't a character flaw and hunger is not a failure. 

 

Remember, we are the future of healthcare. And until next time, shine on.