Pourquoi ai-je faim tout le temps malgré des repas normaux ?

Plusieurs causes peuvent coexister. Selon Skoracka et al. 2025 dans Peptides, la régulation de l'appétit dépend principalement de deux hormones : la ghréline (qui stimule la faim) et la leptine (qui signale la satiété). Si vos repas manquent de fibres, de protéines ou de bonnes graisses, le signal leptine est faible et la faim revient vite. D'autres facteurs interviennent : manque de sommeil, stress chronique, hydratation insuffisante, repas irréguliers, exposition aux écrans pendant les repas. Identifier sa cause principale est la première étape.

Le manque de sommeil augmente-t-il vraiment la faim ?

Oui, et c'est l'un des effets les mieux documentés. Selon Liu et al. 2022 dans Nutrients, la privation de sommeil augmente significativement la production de ghréline (hormone de la faim) et diminue la production de leptine (hormone de la satiété). Concrètement, après une nuit de moins de 6 heures, vous avez davantage faim et vous êtes plus attiré par les aliments riches en glucides et en graisses. McHill et al. 2022 dans Nutrients confirme que la perturbation chronique du rythme circadien modifie durablement les hormones de l'appétit.

Quelle différence entre faim physique et faim émotionnelle ?

La faim physique s'installe progressivement (1 à 4 heures après le dernier repas), s'accompagne de signaux corporels (gargouillis, baisse d'énergie, légère irritabilité) et est apaisée par n'importe quel aliment nutritif. La faim émotionnelle apparaît brutalement, cible un aliment précis (souvent sucré ou gras), s'accompagne d'une émotion identifiable (stress, ennui, tristesse) et n'est pas vraiment apaisée par le fait de manger. Apprendre à distinguer ces deux faims est essentiel pour adapter sa réponse.

Combien de fibres faut-il manger pour bien caler ?

L'ANSES recommande 30 g de fibres par jour pour l'adulte. La plupart des Français en consomment 18 à 22 g, soit largement en dessous. Pour mieux caler à chaque repas : privilégier les céréales complètes, légumineuses, légumes peu cuits, fruits avec leur peau, oléagineux, et 1 à 2 cuillères à soupe de graines de chia ou de lin moulu par jour. Augmenter progressivement (en quelques semaines) pour laisser le microbiote intestinal s'adapter et éviter les ballonnements.

Quelle quantité de protéines par repas pour ne plus avoir faim ?

Les recommandations actuelles convergent autour de 20 à 30 g de protéines par repas principal (matin, midi, soir) et 10 à 15 g pour les collations. Concrètement : 100 g de poulet ou de poisson apportent 20 à 25 g de protéines, 2 œufs apportent 13 g, 100 g de tofu ferme apportent 14 g, 30 g d'amandes apportent 6 g. Beaucoup de personnes négligent les protéines au petit-déjeuner, ce qui explique les fringales en milieu de matinée. Inclure une source de protéines dès le matin change l'expérience de la satiété toute la journée.

Le konjac est-il vraiment un coupe-faim ?

Le konjac contient du glucomannane, une fibre soluble très visqueuse qui gonfle au contact de l'eau dans l'estomac. Selon Au-Yeung et al. 2017 dans British Journal of Nutrition, le glucomannane sous forme de gel peut réduire l'apport énergétique à court terme. Important : le konjac n'est pas un coupe-faim magique. Il aide sur la composante satiété mécanique (sensation d'estomac rempli), mais ne corrige pas les autres causes de faim (manque de protéines, sommeil dégradé, stress). Il fonctionne en appoint d'une alimentation équilibrée, pas comme solution unique. À prendre avec un grand verre d'eau, 30 minutes avant les repas.

Quand la faim constante est-elle un signe d'alerte ?

Consultez un médecin si votre faim constante s'accompagne d'un ou plusieurs signes suivants : perte de poids inexpliquée, soif anormale et envie d'uriner fréquente (suspicion de diabète), fatigue intense malgré un sommeil normal, palpitations, transpiration excessive (suspicion de troubles thyroïdiens), perte de cheveux, alternance de privation et de crises de boulimie. Une faim chronique persistante associée à ces signes peut révéler une pathologie sous-jacente (diabète, hyperthyroïdie, trouble du comportement alimentaire) qui nécessite un diagnostic médical.

Boire de l'eau coupe-t-il vraiment la faim ?

Partiellement et de manière transitoire. L'hypothalamus régule à la fois la faim et la soif, et une déshydratation modérée peut être interprétée comme une fausse faim. Boire un grand verre d'eau avant un repas peut faciliter la satiété, mais l'idée que l'eau seule remplacerait un repas est fausse. Si vous avez vraiment besoin de manger, boire de l'eau ne résoudra pas la situation et risque même de retarder un apport nutritionnel utile. Recommandation : 1,5 à 2 litres d'eau par jour, en buvant régulièrement plutôt qu'en grande quantité d'un coup.

Le stress fait-il vraiment manger plus ?

Oui, par plusieurs mécanismes. Le stress aigu peut couper l'appétit (libération d'adrénaline). Mais le stress chronique active durablement le cortisol, hormone qui stimule l'appétit et oriente spécifiquement vers les aliments sucrés et gras (réconfort biologique). C'est ce qu'on appelle la faim émotionnelle. Les solutions efficaces ne passent pas par la restriction alimentaire mais par la gestion du stress lui-même : sommeil suffisant, activité physique régulière, techniques de respiration, soutien social. La supplémentation en magnésium peut aider sur la composante tension nerveuse.

Pourquoi ai-je plus faim avant les règles ?

Pendant la phase lutéale (du 14e au 28e jour du cycle), le métabolisme basal augmente d'environ 100 à 300 kcal par jour pour préparer une potentielle grossesse. Les niveaux de progestérone augmentent et stimulent légèrement l'appétit. Les envies de sucre ou de chocolat sont en partie liées à la baisse de sérotonine en fin de cycle. C'est physiologique et normal. La meilleure approche : adapter ses apports (un peu plus de calories, sources de magnésium et glucides complexes) plutôt que résister rigidement. Limiter les restrictions strictes pendant cette phase.

Les écrans pendant les repas augmentent-ils la faim ?

Indirectement, oui. Manger devant un écran (TV, smartphone, ordinateur) diminue la conscience de l'acte de manger et le signal de satiété. Le corps met environ 20 minutes pour reconnaître le glucose ingéré et libérer la leptine. Manger trop vite ou en étant distrait contourne ce mécanisme. Résultat : on mange plus que nécessaire et on ressent à nouveau la faim plus tôt. Recommandation : prendre les repas assis, sans écran, en se concentrant sur les sensations gustatives. Cela ne signifie pas manger en silence, mais éviter les distractions captatives.

Quelle est la meilleure routine pour ne plus avoir faim tout le temps ?

Une routine équilibrée combine plusieurs leviers : (1) petit-déjeuner avec 15-20 g de protéines, (2) déjeuner et dîner avec protéines, fibres et bonnes graisses, (3) 1,5 à 2 litres d'eau par jour, (4) sommeil de 7 à 8 heures (régularité essentielle), (5) gestion du stress (10 minutes de marche, respiration), (6) repas pris assis sans écran, (7) collation si besoin (fruit + oléagineux ou yaourt + graines), (8) limiter les aliments ultra-transformés qui désorganisent les signaux de faim. Pour un appoint de satiété mécanique, le konjac peut être utile 30 minutes avant le repas avec un grand verre d'eau.

Why Am I Always Hungry? Symptoms, Causes and Solutions

Sep 9, 2022

By Nutrition•pro

Pourquoi ai-je toujours faim ? Symptômes, causes et solutions

The Nutrition•pro Team · Updated May 24, 2026 · Reading time: 10 min · Our methodology

You eat until you're full, yet your stomach reminds you an hour later. You snack for no reason between meals. You think it's "cravings" or "lack of willpower," but the reality is elsewhere: being constantly hungry is a precise physiological signal, triggered by an imbalance between two key hormones ( ghrelin and leptin) under the influence of your diet, sleep, stress, and hormones. This article reviews 10 scientifically documented true causes , and provides concrete solutions for each.

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Standardized glucomannan, a soluble fiber that swells in the stomach and provides a mechanical sensation of fullness. Au-Yeung 2017 in British Journal of Nutrition demonstrated its effect on energy intake. To be taken 30 minutes before meals with a large glass of water, as a supplement to a balanced diet.

View Pure Konjac →

IN BRIEF

Four key findings. (1) Hunger is regulated by two opposing hormones: ghrelin (stimulates appetite) and leptin (signals fullness), according to Skoracka et al. 2025 in Peptides. (2) Sleep deprivation is one of the most underestimated causes: it increases ghrelin and decreases leptin (Liu 2022 in Nutrients). (3) Priority nutritional levers: 30 g of fiber per day (ANSES) and 20-30 g of protein per meal. (4) For mechanical support, konjac (glucomannan) can help with stomach satiety, without replacing a comprehensive approach.

TABLE OF CONTENTS

"Normal" hunger vs chronic hunger: where is the line?
How hunger works: ghrelin, leptin, hypothalamus
The 10 real causes of constant hunger
Top 4 nutritional levers (fiber, protein, water, regularity)
The 3 underestimated behavioral factors (sleep, stress, screens)
Emotional hunger vs physical hunger: how to distinguish
When to consult: warning signs to recognize
Natural solutions and adapted supplements

"Normal" hunger vs chronic hunger: where is the line?

KEY TAKEAWAYS

Physiological hunger appears 3 to 5 hours after a balanced meal, develops gradually and manifests through stomach growling, a drop in energy, sometimes mild irritability. It is relieved by a balanced meal. Chronic hunger occurs outside this rhythm: less than 1 hour after a meal, accompanied by specific cravings (sweet, fatty foods), persistent despite eating. This warning signal warrants investigating underlying causes.

How hunger works: ghrelin, leptin, hypothalamus

KEY TAKEAWAYS

Hunger regulation relies on two hormones with opposite roles. According to Skoracka et al. 2025 in Peptides, ghrelin is produced by an empty stomach and stimulates orexigenic neurons in the hypothalamus (hunger). Leptin ,produced by adipose tissue, signals satiety and inhibits these same neurons. A dysfunction of one or the other, or a state of leptin resistance, disrupts hunger and satiety sensations.

APPETITE REGULATION 2025

Leptin and ghrelin are two key hormones playing opposite roles in appetite regulation and energy balance. Ghrelin stimulates appetite and food intake by activating orexigenic neurons in the arcuate nucleus. Leptin, conversely, suppresses appetite and reduces food intake by inhibiting these neurons and simultaneously activating those that promote satiety and increase energy expenditure.

Skoracka K et al. Peptides 2025;186:171367. DOI: 10.1016/j.peptides.2025.171367

Understanding this mechanism is essential for identifying action levers. You cannot change your genetics, but you can influence the production of these hormones through your diet, sleep, stress, and physical activity. This is the focus of the following sections.

The 10 real causes of constant hunger

Lack of dietary fiber

Nutritional cause #1

Fiber slows gastric emptying, prolongs the sensation of fullness, and stabilizes blood sugar levels. Most French people consume 18-22 g of fiber per day compared to 30 g recommended by ANSES. Solution: whole grains, legumes, lightly cooked vegetables, fruits with skin, nuts and seeds, chia seeds or ground flaxseed.

Lack of protein at each meal

Nutritional cause #2

Proteins trigger satiety signals more powerfully than carbohydrates or fats. The protein leverage explains why a low-protein meal leaves you hungry quickly. Solution: 20-30 g of protein per meal (eggs, fish, meat, legumes, tofu, cottage cheese), especially at breakfast.

Lack of sleep

Major behavioral cause

An underestimated and highly powerful cause. According to Liu et al. 2022 in Nutrients, sleep deprivation increases ghrelin (hunger) and decreases leptin (satiety), while directing you toward sweeter and fattier food choices. Solution: 7 to 8 hours of regular sleep, bedtime before midnight, screens off 1 hour before bed.

Insufficient hydration

Often-confused cause

The hypothalamus regulates both hunger and thirst. Mild dehydration can be interpreted as false hunger, particularly for solid foods. Solution: 1.5 to 2 liters of water per day, drinking regularly rather than in large quantities at once. Glass of water 20 minutes before each meal.

Chronic stress and cortisol

Hormonal cause #1

Acute stress suppresses appetite (adrenaline), but chronic stress persistently activates cortisol, which stimulates appetite and drives cravings for sugary and fatty foods (biological comfort). This is the famous emotional hunger. Solution: regular moderate physical activity, breathing exercises or heart rate coherence, magnesium in case of nervous tension.

Irregular meals and circadian desynchronization

Behavioral cause

According to McHill et al. 2022 in Nutrients, chronic disruption of circadian rhythm (variable meal times, night work, repeated jet lag) alters appetite hormones and increases subjective hunger. Solution: 3 meals at stable times, +/- 1-2 snacks depending on profile. Avoid eating very late in the evening.

Emotional hunger

Frequent psychological cause

Eating to regulate an emotion (stress, boredom, sadness, fatigue) rather than to meet a physical need. Often unconscious. Solution: Identify the underlying emotion before going to the refrigerator (5 minutes pause), keep a food/emotional diary for 1-2 weeks, develop other emotional regulation strategies.

Screens and visual food stimulation

Modern cause

Eating in front of a screen reduces awareness of the act and delays the satiety signal. Food images on social media stimulate cravings independent of physical hunger. Solution: Meals eaten sitting down without screens, minimum duration 20 minutes, limit exposure to food content on social networks when hungry.

Appetite-stimulating medications

Pharmacological cause

Certain classes of medications increase appetite: Antidepressants (mirtazapine in particular), Corticosteroids (prednisone), First-generation antihistamines, Antipsychotics Insulin, Solution:. NEVER stop a treatment without medical advice. Discuss the side effect with your prescriber and adjust your diet (proteins + fiber as priority). 10

Hormonal variations (female cycle, menopause)

Female physiological cause

During the luteal phase (from day 14 to day 28 of the cycle), basal metabolism increases by 100-300 kcal/day and progesterone stimulates appetite. At menopause, the drop in estrogen also modifies appetite regulation.

Solution: Adapt your intake rather than resist, magnesium and complex carbohydrates for sugar cravings. Top 4 nutritional levers (fiber, protein, water, regularity)

KEY TAKEAWAYS

Before any supplementation, the

four basic levers to address in this order: (1) protein at each meal, especially at breakfast (20-30 g), (2) dietary fiber (target 30 g/day), (3) adequate hydration (1.5 to 2 L of water), (4) meal regularity (3 per day, +/- 1-2 snacks). If these 4 levers are in place, half of chronic hunger issues disappear in 2-3 weeks. How much protein at each meal?

Food

Quantity	Protein	Grilled chicken breast
Filet de poulet grillé	100 g	25 g
Salmon fillet	100 g	22 g
Whole eggs	2 eggs	13 g
Firm tofu	100 g	14 g
Cooked lentils	200 g	18 g
Fat-free cottage cheese	200 g	16 g
Almonds	30 g	6 g

How to reach 30 g of fiber per day

Some practical benchmarks: 1 bowl of oatmeal provides 4 g of fiber, 100 g of cooked lentils 8 g, 1 apple with skin 2.4 g, 100 g of broccoli 2.6 g, 30 g of almonds 3.5 g, 1 tablespoon of chia seeds 5 g. Mixing these sources throughout the day is more effective than relying on just one.

The 3 underestimated behavioral factors

KEY TAKEAWAYS

Three behavioral factors carry enormous weight without our awareness: sleep (ghrelin/leptin dysregulation), chronic stress (cortisol that drives sugar cravings), screen use during meals (delayed satiety signal). Addressing these three levers often has more impact than caloric restriction.

SLEEP AND APPETITE 2022

Sleep deprivation is associated with an increased risk of obesity. The relationship between sleep deprivation and obesity, type 2 diabetes, and other chronic diseases may be linked to dysregulation of appetite control. This review analyzes changes in orexin, ghrelin, leptin, and insulin production caused by long-term sleep deprivation.

Liu S et al. Nutrients 2022;14(24):5196. DOI: 10.3390/nu14245196

CIRCADIAN RHYTHM AND HUNGER 2022

In a study of 17 healthy young adults observed over 32 days in a laboratory setting, chronic circadian disruption was associated with a significant decrease in hunger and appetite across multiple dimensions. This change was correlated with variations in the ghrelin/leptin ratio.

McHill AW et al. Nutrients 2022;14(9):1800. DOI: 10.3390/nu14091800

Emotional hunger vs. physical hunger: how to tell the difference

KEY TAKEAWAYS

Physical hunger develops gradually (1 to 4 hours after eating), is accompanied by physical signals (stomach growling, energy dip) and is satisfied by any nutritious food. Emotional hunger appears suddenly, targets a specific food (often sweet or fatty), is accompanied by an identifiable emotion (stress, boredom, sadness) and is not truly satisfied by eating.

Criterion	Physical hunger	Emotional hunger
Onset	Gradual	Sudden
Time since last meal	3 to 5 hours	Any time, even right after eating
Physical signals	Stomach growling, fatigue, mild irritability	Often absent
Food sought	Varies, any nutritious food	Specific: sweet, fatty, comforting
Satisfaction from eating	Yes, lasting	Partial, followed by guilt
Associated emotion	None in particular	Stress, boredom, sadness, fatigue

Self-assessment: what type of hunger do you experience mainly?

8-question profile test

Check the statements that apply to you. The result points to the main lever to activate.

My breakfast contains little to no protein (toast, cereals, fruit juice).
I sleep less than 7 hours per night during the week.
I consume few vegetables, legumes, or whole grains.
My food cravings often target a specific food (sweet or fatty).
My meal times vary greatly from one day to the next.
I am experiencing a period of chronic stress at work or in my personal life.
I regularly eat in front of a screen (TV, smartphone, computer).
I drink less than 1.5 liters of water per day.

You checked 0 statement(s) out of 8.

Several levers to activate

Your results show that several factors contribute to your constant hunger. Prioritize in this order: (1) sufficient sleep, (2) protein at each meal, (3) dietary fiber, (4) hydration, (5) meal time regularity. As a supplement, pure Konjac can support mechanical satiety 30 minutes before meals. For soluble fiber, organic Blonde Psyllium is a complementary option. If your efforts do not produce results after 4 to 6 weeks, consult your doctor to explore possible medical causes.

When to consult: warning signs to recognize

KEY TAKEAWAY

Constant hunger can sometimes reveal an underlying condition. Consult a doctor if it is accompanied by: unexplained weight loss, abnormal thirst + frequent urination (suspected diabetes), intense fatigue + palpitations + sweating (suspected hyperthyroidism), alternation between deprivation and binge eating episodes (suspected eating disorder), hair loss + sensitivity to cold (suspected hypothyroidism or nutritional deficiencies). Do not self-supplement in these cases; medical diagnosis must precede any intervention.

SIGNS REQUIRING MEDICAL ADVICE

Unwanted weight loss of more than 5 kg over a few months despite constant hunger: may reveal type 1 diabetes, hyperthyroidism, certain digestive cancers, or absorption disorders (celiac disease, inflammatory bowel diseases). Medical evaluation is essential.

Polydipsia (abnormal thirst) + polyuria (frequent urination) + polyphagia (significant hunger) : classic triad of diabetes. Fasting blood glucose should be requested.

Alternation between strict restriction and uncontrolled eating episodes, excessive preoccupation with weight or body image: may reveal an eating disorder (ED). Treatment involves a psychiatrist, a dietitian, and sometimes an endocrinologist. Do not delay; the earlier an ED is addressed, the better the prognosis.

Natural solutions and adapted supplements

KEY TAKEAWAY

Three natural supplements documented for satiety, to be used in appointment as part of a holistic approach: (1) Konjac (glucomannan) for mechanical stomach satiety (Au-Yeung 2017), (2) Psyllium for soluble fiber and digestive comfort, (3) Magnesium bisglycinate for the stress/cortisol component of cravings. None is a miracle solution: they complement a balanced diet.

KONJAC AND SATIETY 2017

The replacement of a carbohydrate-rich food load with low-energy konjac glucomannan gel noodles did not promote subsequent compensatory food intake, despite a significant reduction in energy intake. The energy deficit generated by partial glucomannan substitution may be relevant in weight management.

Au-Yeung F et al. Br J Nutr 2017;119(1):109-116. DOI: 10.1017/S0007114517003233

Profile and choice by profile

YOUR PROFILE AND THE PRIORITY LEVER

Hunger after each meal
low-protein meals

Restructure intake
20-30 g of protein per meal

Chronic hunger
+ sleep less than 6 hours

Sleep priority
before any other action

Emotional hunger
chronic stress

Stress management
+ magnesium if tension present

Compulsive snacking
between meals

Konjac 30 minutes before meals
+ large glass of water

Constipation
+ low fiber intake

Organic blonde psyllium
+ adequate hydration

Cyclical hunger
(luteal phase)

Adjust intake
magnesium + complex carbohydrates

Hunger + weight loss
or other warning signs

Consult a doctor
before supplementation

★ NATURAL SATIETY SUPPORT

Pure Konjac: the soluble fiber that satisfies

Standardized glucomannan, soluble fiber that swells in the stomach when in contact with water to create a mechanical satiety sensation that lasts. Effect validated by Au-Yeung 2017 in British Journal of Nutrition. To be taken 30 minutes before meals with a large glass of water, as a complement to a balanced diet.

See Pure Konjac →

Frequently asked questions

Why am I hungry all the time despite eating normal meals?

Several causes can coexist. Appetite regulation depends on ghrelin (hunger) and leptin (satiety), according to Skoracka et al. 2025 in Peptides. If your meals lack fiber, protein or healthy fats, the leptin signal is weak. Other factors: lack of sleep, chronic stress, insufficient hydration, irregular meals, screens during meals.

Does lack of sleep really increase hunger?

Yes. According to Liu et al. 2022 in Nutrients, sleep deprivation increases ghrelin and decreases leptin. After a night of less than 6 hours, you feel hungrier and are drawn to sugary and fatty foods. McHill et al. 2022 confirms that chronic circadian rhythm disruption durably alters appetite hormones.

What's the difference between physical hunger and emotional hunger?

Physical hunger: gradual onset (1-4 hours after meals), body signals (stomach rumbling, energy drop), satisfied by any nutritious food. Emotional hunger: sudden onset, craving for a specific food (sugary/fatty), identifiable emotion (stress, boredom), is not really satisfied by eating.

How much fiber do you need to eat to feel full?

ANSES: 30 g/day. Most French people consume 18-22 g. Sources: whole grains, legumes, lightly cooked vegetables, fruits with skin, nuts and seeds, 1-2 tablespoons of chia seeds or ground flaxseed per day. Increase gradually to avoid bloating.

How much protein per meal to stop feeling hungry?

20-30 g per main meal, 10-15 g for snacks. Concretely: 100 g of chicken or fish = 20-25 g, 2 eggs = 13 g, 100 g of firm tofu = 14 g, 30 g of almonds = 6 g. Many people neglect protein at breakfast, which explains mid-morning hunger pangs.

Is konjac really an appetite suppressant?

Konjac contains glucomannan, a soluble fiber that swells in the stomach. According to Au-Yeung et al. 2017 in British Journal of Nutrition, it may reduce energy intake in the short term. Important: not a magic appetite suppressant. It helps with mechanical satiety, not other causes of hunger. Take 30 minutes before meals with a large glass of water.

When is constant hunger a warning sign?

Consult a doctor if associated with: unexplained weight loss, abnormal thirst + frequent urination (diabetes), fatigue + palpitations + sweating (hyperthyroidism), hair loss, or alternating restriction/binge eating episodes. These signs may reveal an underlying condition requiring medical diagnosis.

Does drinking water really suppress hunger?

Partially and temporarily. The hypothalamus regulates hunger and thirst; mild dehydration can be mistaken for false hunger. Drinking a large glass of water before a meal can facilitate satiety, but water alone does not replace a meal. 1.5 to 2 liters of water per day, by drinking regularly.

Does stress really make you eat more?

Yes. Acute stress suppresses appetite (adrenaline). Chronic stress durably activates cortisol, which stimulates appetite and drives cravings for sugary and fatty foods. Solutions: stress management (sleep, physical activity, breathing), not food restriction. Magnesium possible in case of nervous tension.

Why am I hungrier before my period?

During the luteal phase (days 14-28), basal metabolism increases by 100-300 kcal/day. Progesterone stimulates appetite, and decreased serotonin at cycle end creates sugar cravings. Physiological and normal. Adjust intake rather than resist rigidly.

Do screens during meals increase hunger?

Indirectly, yes. Eating in front of a screen decreases awareness of the act and the satiety signal (20 minutes needed for the brain to release leptin). You eat more and hunger returns sooner. Recommendation : meals taken seated, without screens, while focusing on taste sensations.

What is the best routine to stop being hungry?

Combination: (1) protein-rich breakfast 15-20 g, (2) main meals with protein + fiber + healthy fats, (3) 1.5-2 L water, (4) regular 7-8 hour sleep, (5) stress management, (6) screen-free meals, (7) snack if needed, (8) limit ultra-processed foods. Konjac possible as supplement 30 minutes before meals.

Glossary

DEFINITIONS

Ghrelin: Hormone produced mainly by the empty stomach, which stimulates appetite by activating orexigenic neurons in the hypothalamus. Its level increases before meals and decreases after.
Leptin: Hormone produced by adipose tissue, which signals satiety to the brain by inhibiting hunger neurons. Its level is proportional to fat mass.
Hypothalamus: Central region of the brain that regulates many automatic functions, including hunger, thirst, body temperature, sleep, and circadian rhythms. Appetite control center.
Leptin resistance: A state in which the body no longer responds properly to leptin despite elevated levels. Common in overweight conditions, chronic inflammation, or prolonged sleep deprivation. Contributes to persistent hunger.
Glucomannan: Highly viscous soluble fiber extracted from the konjac tuber. Capable of absorbing up to 100 times its weight in water, forming a gel in the stomach that slows gastric emptying and provides a feeling of fullness.
Emotional hunger: Desire to eat triggered by an emotion (stress, boredom, sadness, fatigue) rather than by a physical need. Often unconscious, targets specific foods (sweet, fatty), is not truly soothed by the meal.

Scientific sources

BIBLIOGRAPHIC REFERENCES

Skoracka K, Hryhorowicz S, Schulz P, et al. The role of leptin and ghrelin in the regulation of appetite in obesity. Peptides 2025;186:171367. DOI : 10.1016/j.peptides.2025.171367
Liu S, Wang X, Zheng Q, Gao L, Sun Q. Sleep Deprivation and Central Appetite Regulation. Nutrients 2022;14(24):5196. DOI : 10.3390/nu14245196
McHill AW, Hull JT, Klerman EB. Chronic Circadian Disruption and Sleep Restriction Influence Subjective Hunger, Appetite, and Food Preference. Nutrients 2022;14(9):1800. DOI : 10.3390/nu14091800
Au-Yeung F, Jovanovski E, Jenkins AL, et al. The effects of gelled konjac glucomannan fibre on appetite and energy intake in healthy individuals: a randomised cross-over trial. Br J Nutr 2017;119(1):109-116. DOI : 10.1017/S0007114517003233
ANSES. Recommended nutritional intakes for the French population (fiber: 30 g/day). Anses.fr

To go further

Feeling hungry after eating: why? Focus on immediate post-meal hunger and its mechanisms How to reduce sugar: a factual guide Stop sugar and associated cravings for good Miracle berry: replace sugar A natural alternative to reduce sweet cravings How to lose 10 kg in 1 month? Detailed slimming guide for sustainable weight loss

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The Nutrition•pro team · Article based on 4 published scientific studies in Peptides, Nutrients and British Journal of Nutrition, supplemented by recommendations from ANSES. Published in September 2022, updated May 24, 2026 · Estimated reading time: 10 minutes. Our editorial methodology.