Madeleine Hull
Dieting can be a tricky business, and it's normal to feel hungry if you don't eat for a few hours. However, if you're constantly hungry, something might be up with your health. Extreme hunger is called polyphagia, and it could be a sign of an underlying health issue, such as diabetes, hyperthyroidism, or depression. It could also be caused by hormonal issues, like leptin resistance, or your daily lifestyle. For example, if you're stressed, your body releases cortisol, which can increase your blood sugar level and make you hungry. Additionally, if your diet lacks protein or fiber, you may find yourself feeling hungry more often. On the other hand, if you're used to grazing throughout the day, you might feel mentally hungry because you miss the habit. So, should your diet make you hungry? The answer is nuanced. While it's normal to feel some level of hunger when dieting, constant hunger could indicate an issue, and it's important to listen to your body and seek professional advice if concerned.
| Characteristics | Values |
|---|---|
| Hunger | Normal if you don't eat for a few hours |
| Extreme hunger | Could be a sign of an underlying health issue, such as diabetes, hyperthyroidism, or depression |
| Diet | May cause hunger if lacking protein or fibre |
| High-protein meals induce greater feelings of fullness than high-carb or high-fat meals | |
| Healthy fats, such as those found in nuts, fish, and sunflower oil, can help you feel satisfied after a meal | |
| Eating slowly and mindfully may help you feel fuller | |
| Drinking water before a meal may help you feel full on fewer calories | |
| Hormones | Ghrelin and leptin are key hormones that regulate hunger and fullness |
| Leptin resistance can cause your brain to think you're hungry even after a meal | |
| Cortisol, released during stress, can increase hunger | |
| Medication | Some medications can increase appetite as a side effect, including antihistamines, antidepressants, steroids, diabetes medications, and antipsychotics |
| Lifestyle | Stress and boredom can cause people to eat when their bodies don't need fuel |
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What You'll Learn
Hunger is a basic biological response to your body's need for food
The physical sensation of hunger is related to the contractions of the muscles of the empty stomach, often called hunger pangs. These contractions are believed to be triggered by high levels of the hormone ghrelin, which increases appetite and gastric acid secretion. Ghrelin levels are highest right before meals when blood sugar is low and the stomach is empty. Leptin, another hormone, is secreted by adipose cells in response to increased body fat mass and plays a role in long-term hunger and food intake regulation.
Hunger can also be influenced by environmental and cultural factors. For example, stress, boredom, and exposure to delicious-looking or smelling food can increase appetite even when not hungry. Additionally, certain medications, such as antihistamines, antidepressants, steroids, and diabetes medications, can increase appetite as a side effect.
While hunger is a normal and necessary sensation, constant hunger or polyphagia may indicate an underlying health issue. This could be due to medical conditions like diabetes, where the body is unable to utilize glucose effectively, leading to increased appetite. It is important to consult a healthcare professional if you experience frequent hunger to rule out any potential health concerns.
In summary, hunger is a complex biological response to the body's need for food, involving various physiological, environmental, and psychological factors. Understanding these factors can help manage hunger and promote a healthy relationship with food.
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Extreme hunger could indicate an underlying health issue
Extreme hunger, also known as polyphagia or hyperphagia, can indicate an underlying health issue. While it is normal to feel hungry if you have not eaten for a few hours, constant hunger, even after a meal, could be a sign of a health condition.
Polyphagia is a relatively uncommon symptom, but it can be caused by a variety of factors, including diet, stress, or medical conditions. For example, a diet lacking in protein and high in refined carbs can make you feel hungry soon after a meal. Healthy fats, such as those found in nuts, fish, and sunflower oil, are essential to a balanced diet and can help you feel satisfied after eating. Similarly, consuming enough fiber can help you feel full faster.
Stress can also lead to increased hunger. Excess, long-term stress can increase levels of cortisol, a hormone that promotes hunger and food cravings. Additionally, certain medications can increase appetite as a side effect. These include antihistamines, antidepressants, steroids, some diabetes medications, and antipsychotic drugs.
Extreme hunger can also be a symptom of more serious health conditions, such as diabetes, hypoglycemia, and hyperthyroidism. In the case of diabetes, the body cannot properly use the insulin produced to turn sugar into fuel, leading to a buildup of glucose in the blood and increased hunger. Hypoglycemia, or low blood sugar, can be caused by diabetes medications or other health problems. Hyperthyroidism, on the other hand, is caused by an overactive thyroid gland, resulting in increased hormone production and a faster metabolic rate.
If you are experiencing extreme hunger, it is important to consult a healthcare professional to determine the underlying cause and receive appropriate treatment.
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A diet lacking in protein or fibre can cause frequent hunger
Diet is one of the most common reasons for constant hunger. A diet lacking in protein or fibre can cause frequent hunger.
Lack of Fibre
Fibre is a type of indigestible carbohydrate that passes through the body without being digested. Fibre helps regulate the body's use of sugars, lowers the risk of cardiovascular disease, and keeps hunger and blood sugar levels in check. High-fibre foods take longer to digest, signalling to the brain that one is full, which helps one eat less throughout the day. Low-fibre meals digest more quickly, and one feels hungry soon after. According to the Burkitt hypothesis, a diet low in fibre increases the risk of coronary heart disease, obesity, diabetes, cavities, and various vascular and bowel disorders.
Lack of Protein
Protein is one of the three sources of calories, along with carbs and fats. Protein-rich foods help one feel fuller throughout the day. Research has shown that just a week of not eating enough protein can affect the muscles responsible for posture and movement, and a lack of protein can, over time, lead to loss of muscle mass, cutting strength, and slowing metabolism. A diet lacking in protein can also lead to unintended weight gain and obesity, as one may end up consuming more high-calorie foods to compensate for the lack of protein.
If you are experiencing constant hunger, it may be a good idea to consult a healthcare professional or a dietitian.
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Hormones play a key role in regulating hunger and fullness
Cortisol is a stress hormone that increases impulsive snacking and food cravings. Studies have shown that increased levels of cortisol can lead to weight gain due to the development of leptin resistance. GLP-1 is a hormone that alerts the brain that you are full and should stop eating. Insulin is a hormone released by the pancreas that regulates blood sugar levels and the conversion of food energy into fat.
In addition to these five hormones, other hormones such as peptide YY and glucagon-like peptide also play a role in regulating appetite and fullness by inhibiting appetite and regulating long-term energy homeostasis. These hormones interact with the hypothalamus, the key central integrator of hunger signals, to produce sensations of appetite and satiety.
Diet, stress, and medical conditions can also impact hunger and fullness. For example, consuming foods high in unhealthy fats and carbs can leave you feeling hungry soon after a meal. Stress can increase cortisol levels, leading to increased hunger and snacking. Certain medical conditions, such as diabetes, can disrupt hunger signals and cause extreme hunger.
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Stress, anxiety and certain medications can increase hunger
Experiencing frequent hunger can be attributed to several factors, including stress, anxiety, and certain medications. Here's how these factors can increase hunger:
Stress
Long-term stress is associated with an increased appetite and frequent hunger. When stressed, the body releases the hormone cortisol, which increases blood sugar levels and promotes hunger and food cravings. Additionally, high cortisol levels, combined with high insulin levels, may further enhance these effects. Studies have shown that people who respond to stress with high cortisol levels tend to snack more frequently in their daily lives. Stress can also affect food preferences, leading to an increased intake of high-fat and high-sugar "comfort" foods. These foods can have a feedback effect that dampens stress-related responses and emotions, making them comforting.
Anxiety
Similar to stress, anxiety disorders can also elevate cortisol levels, resulting in frequent hunger. Extreme hunger due to anxiety may be an emotional response, as eating can be a coping mechanism to deal with negative emotions.
Medications
Certain medications can increase appetite as a side effect. Common appetite-inducing medications include antipsychotics such as clozapine and olanzapine, as well as corticosteroids and cannabinoids (cannabis-related drugs). Additionally, some medications can affect your sense of taste, such as certain antidepressants or anti-Parkinson's drugs, which may indirectly influence appetite.
It is important to note that frequent hunger can be influenced by a combination of these factors, and addressing them may involve stress-relieving strategies, lifestyle changes, or consulting a healthcare professional about alternative medications.
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Frequently asked questions
Feeling hungry is normal if you haven't eaten for a few hours. However, if you're constantly hungry, even after eating, it could be due to an inadequate diet, hormone issues, or your daily lifestyle. Diets that lack protein or fibre can make you feel hungry more often.
Excess hunger can make unhealthy foods more tempting and can cause you to overeat. It can also make it difficult to exercise, which may negatively impact your weight loss journey.
Our bodies often interpret hunger for thirst. Having a glass of water and waiting 10-20 minutes can help determine if you're actually hungry.
Meals should be balanced and include protein, wholegrain carbs, and healthy fats. Protein-rich foods such as lean meats, tofu, beans, and nuts can help suppress appetite-stimulating hormones and stimulate fullness hormones. Fibre-rich foods like fruits, vegetables, nuts, seeds, beans, and grains can also help manage hunger.
Yes, excess long-term stress can increase your appetite. This is due to increased levels of the hormone cortisol, which is associated with hunger and food cravings.
