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Hunger Headache: Causes, Symptoms, and Prevention

Updated: Apr 2

A Man Experiencing Hunger Headache.

Understanding hunger headache can make life better. Hunger headaches, also known as fasting or starvation headaches, are common. Many people get these headaches when they don't eat enough for a while. In this article, we'll explore what causes these headaches, their symptoms, how to prevent them, and ways to relieve the discomfort.

Can Hunger Cause Headaches?

Yes, hunger can cause headaches. When you go without eating for an extended period, your blood sugar levels drop, which can trigger headaches. These headaches are often referred to as hunger headaches or fasting headaches. They typically result from the body's response to low glucose levels, and they can range from mild discomfort to more severe pain. These headaches are a signal from your body that it needs fuel, and they typically subside once you eat and restore your blood sugar levels.

What is a Hunger Headache?

A hunger headache happens when you go a long time without eating. It feels like a dull ache in your head and might make you feel weak, grumpy, or find it hard to focus. Eating something usually makes it go away by getting your blood sugar levels back to normal.

Causes of Hunger Headache

Hunger headaches happen when you don't eat enough or go without food for a while. They can be caused by:

Low Blood Sugar Levels

Low blood sugar is a big reason for hunger headaches. When you don't eat for a while, your blood sugar levels drop. This is called hypoglycemia. Your brain starts feeling the effects and gives you a headache. The brain needs glucose to work, and when there's not enough, it can cause discomfort and headaches.


Not drinking enough water can make hunger headaches worse. When you're dehydrated, it affects how much blood your body has and how well it flows. This can make the blood vessels in your brain narrow, which can cause headaches.

Caffeine Withdrawal

If you're used to having caffeinated drinks often, stopping suddenly or having less caffeine can cause hunger headaches. These headaches are common when fasting or when you suddenly reduce how much caffeine you have. They usually happen within 12 to 24 hours after cutting down on caffeine.

Irregular Eating Patterns

Skipping meals or eating at different times messes up your body's routine, making your blood sugar levels go up and down. Your body needs a steady supply of nutrients to work well. If you skip meals often or eat at random times, you're more likely to get hunger headaches.

Changes in Neurotransmitter Levels

Hunger and fasting can mess with the chemicals in your brain like serotonin and dopamine. These chemicals affect your mood and how you feel pain, so changes in them can lead to headaches.

Stress and Anxiety

Stress and anxiety can make hunger headaches worse. When you're stressed, your body releases cortisol and adrenaline, which can mess with your blood sugar and make headaches more likely.

Underlying Medical Conditions

Medical problems like diabetes or hormonal issues can make you more likely to get hunger headaches. They mess with how your body controls blood sugar, which can lead to headaches.

Medication Side Effects

Certain medicines, especially ones that mess with blood sugar or dehydrate you, might cause hunger headaches as a side effect. If you think your meds are causing headaches, talk to your doctor.

Individual Sensitivity

Some people are just more sensitive to changes in sugar levels or fasting, which can make them more likely to get hunger headaches than others.

Signs and Symptoms of Hunger Headache

Hunger headaches have signs and symptoms that differ in how strong they are for each person. Knowing these signs is important for handling hunger headaches well. Here are the usual signs and symptoms:

Dull, Throbbing Pain

Hunger headaches usually feel like a dull, throbbing pain in the head. The pain is often in the temples or forehead. This throbbing feeling may change in how strong it is but tends to get worse the longer you go without eating.

Fatigue and Weakness

People with hunger headaches may feel tired, weak, and lacking energy. Not eating enough food can make you feel this way, making it hard to focus or do things normally.

Irritability and Mood Changes

When you have hunger headaches, your mood and emotions can be affected a lot. You might feel easily annoyed, frustrated, or more sensitive than usual. This mix of feeling physically uncomfortable and having low blood sugar levels can make your mood swings and emotions harder to handle.

Difficulty Concentrating

When hunger headaches get worse, it can be hard to concentrate and stay focused. Your brain needs glucose to work well, and when your blood sugar levels drop, it can make it tough to think clearly. You might feel like your mind is foggy, find it hard to focus, and have trouble remembering things during hunger headaches.

Increased Sensitivity to Light and Sound

Hunger headaches can make you more sensitive to light, sound, and smells. You might feel more bothered by these things, which can make your headache worse.

Nausea and Dizziness

During hunger headaches, you might feel sick to your stomach or dizzy. These symptoms can add to your discomfort and make it hard to do things.

Muscle Tension

During hunger headaches, some people might feel tightness in their muscles, especially in the neck, shoulders, and upper body. This can add to the discomfort and make the headache feel worse.

How Common is Hunger Headache?

Hunger headaches, also known as fasting headaches or hypoglycemic headaches, are quite common. They're experienced by people all around the world. Although how often they occur can differ based on diet, lifestyle, and health, hunger headaches are widely recognized. Let's take a look at how common they are:

  • Frequency of Occurrence: Hunger headaches can happen now and then or all the time, depending on things like how you eat, how fast your body processes food, and how easily your blood sugar changes. Some people only get them once in a while, while others get them a lot, especially if they often miss meals or eat irregularly.

  • Population Demographics: Hunger headaches can happen to anyone, no matter how old they are or where they're from. While grown-ups might have them more often because of things like stress from work or what they eat, even kids and teenagers can get them. This is especially true if they're doing things that mess up their normal eating times, like playing sports a lot or having lots of schoolwork.

  • Triggers and Contributing Factors: Certain things in life and health can make hunger headaches more likely. If you're on a strict diet, do intermittent fasting, or have health issues like diabetes, your chances of getting hunger headaches might be higher. That's because your blood sugar levels and how your body works can change.

  • Environmental and Sociocultural Influences: Where you live and how your culture views food can also play a role in getting hunger headaches. If food isn't always easy to get, or if meal times and what you eat change a lot because of your culture, you might be more likely to have these headaches.

How is a Hunger Headache Diagnosed?

To find out if someone has a hunger headache, doctors look at the person's medical history, symptoms, and how they live. Because these headaches are usually linked to changes in blood sugar levels, how much water someone drinks, and how they eat, doctors might do these things to figure out what's going on:

1. Medical History Review

Doctors will ask about your past health, including any headaches you've had before, what you eat, how much you drink, and how you live day-to-day, to see if that could be causing your hunger headaches.

2. Symptom Assessment

Doctors will look at how your headaches feel—like a dull ache, how tired you are, if you're grumpy, and if you can't focus. They'll ask when the headaches start, where they hurt, how long they last, and what other symptoms you have. This helps them figure out if it's a hunger headache or something else.

3. Physical Examination

Doctors may check how your body is doing, like your heart rate and reflexes, to see if there are any other health problems causing your headaches. They might also look at your head, neck, and shoulders to see if there's any tension or stiffness that could be causing your headaches.

4. Laboratory Tests

Doctors might do some tests on your blood to check your blood sugar levels and other things like electrolytes and hormones. This can help them see if low blood sugar (hypoglycemia) is causing your headaches, especially if you have diabetes or other health problems.

5. Imaging Studies

Doctors usually don't need to do imaging tests like MRI or CT scans to diagnose hunger headaches. But sometimes they might suggest them if they think there could be other problems in your head or brain causing your headaches.

6. Differential Diagnosis

Hunger headaches can look like other kinds of headaches, such as tension headaches, migraines, or cluster headaches. To figure out which type you have, doctors compare your symptoms, how often you get them, and how well treatments work. Each type of headache needs its own way of treatment.

How to Get Rid of Hunger Headaches?

Hunger headaches can be bothersome, but there are ways to lessen the discomfort and feel better:

1. Hydrate

Drink water to stay hydrated and ease headaches. Aim for eight glasses of water each day. Avoid too much caffeine or sugary drinks, as they can make dehydration worse.

2. Eat Regular Meals

Make sure to eat balanced meals regularly throughout the day. Skipping meals or fasting for too long can cause your blood sugar levels to drop and bring on hunger headaches. Try to have meals that include protein, healthy fats, complex carbohydrates, and fiber to keep your energy levels stable and avoid sudden changes in blood sugar.

3. Healthy Snacking

Add healthy snacks to your day to stave off hunger and keep your energy steady. Choose snacks with complex carbs, protein, and good fats like fruits, nuts, yogurt, and whole grain crackers to help keep your blood sugar stable and ease hunger headaches.

4. Limit Caffeine Intake

If you drink coffee, tea, or soda with caffeine, watch how much you have. Suddenly cutting back on caffeine can cause withdrawal headaches, so think about slowly cutting down if you need to.

5. Monitor Blood Sugar Levels

If your blood sugar levels go up and down a lot, keep an eye on them, especially if you have diabetes or other health issues that affect your blood sugar. Eating regular meals and keeping your blood sugar steady can stop hunger headaches.

6. Manage Stress

Stress can make headaches worse, so it's important to use ways to manage stress every day. Try relaxing activities like taking deep breaths, meditating, doing yoga, or staying focused on the present moment. Stress that sticks around for a long time can make hunger headaches worse, so finding good ways to deal with stress can make the headaches better.

7. Get Adequate Sleep

Not getting enough sleep can make headaches happen more often and feel worse. Try to sleep for seven to eight hours every night so your body can relax and get ready for the next day. Getting enough rest can help balance your hormones and make you feel better overall, lowering the chance of getting hunger headaches. Make a calming bedtime routine and set up your sleeping area to help you sleep well.

How to Prevent Hunger Headaches?

To avoid hunger headaches means doing healthy things in your daily life and eating habits:

1. Stay Hydrated

Drink enough water during the day to keep your body hydrated and working well. Remember to take sips from a water bottle, especially when it's hot outside or when you're active.

2. Choose Nutrient-Dense Foods

Eat foods packed with nutrients like vitamins and minerals. Have a mix of fruits, veggies, whole grains, lean meats, and good fats to stay healthy and avoid lacking important nutrients.

3. Plan Ahead

Plan your meals and snacks in advance to ensure you have nutritious options readily available when hunger strikes. Pack healthy snacks to take with you when you're on the go to avoid relying on unhealthy options or skipping meals.

4. Establish Regular Eating Patterns

Set up a routine for when you eat meals. Make sure to have breakfast, lunch, and dinner at about the same times every day. If you need to, have healthy snacks between meals to keep your energy levels up.

5. Avoid Extreme Diets

Don't follow extreme diets or strict eating plans that could mess up how your body works and lead to hunger headaches. Instead, aim for a balanced diet and eat a variety of foods in reasonable amounts.

6. Avoid Trigger Foods

Identify foods or beverages that trigger hunger headaches for you, such as caffeine, processed foods, or foods high in added sugars. Limit your intake of these trigger foods to prevent headaches.

7. Limit Caffeine and Alcohol

Don't have too much caffeine or alcohol, as they can make you more dehydrated and worsen your headache. Drink water, herbal tea, or other drinks without caffeine instead.

8. Practice Mindful Eating

Be mindful when you eat. Listen to your body when it tells you it's hungry or full. Eat slowly so your brain can tell when you're full. Eating too much or too little can throw off your body's balance and cause hunger headaches.

9. Get Regular Exercise

Exercise regularly to stay healthy and lower your chances of getting hunger headaches. Try to do activities like walking or jogging for about 30 minutes most days.

10. Listen to Your Body

Be aware of when your body tells you it's hungry and eat accordingly. Don't wait too long to eat when you feel hungry, as it can lead to overeating or irregular eating habits that might cause hunger headaches. Try eating smaller meals more often to keep your blood sugar steady and avoid headaches.

How Long for Hunger Headaches to Go Away?

How long it takes for hunger headaches to go away can be different for each person. It depends on things like how bad the headache is, what's causing it, and how fast you eat something to get rid of your hunger and balance your blood sugar levels.

Usually, hunger headaches go away once you eat a balanced meal or snack to give your body the energy it needs and stabilize your blood sugar. For some people, the headache might go away pretty quickly after eating, like within 30 minutes to an hour. But if the headache is really bad or you're also dehydrated or stressed, it might take longer for the headache to go away completely.

Who is at Risk of Hunger Headache?

Anyone can get hunger headaches, but some people might be more likely to have them. Here are some groups of people who could be at higher risk:

1. People with Irregular Eating Patterns

People who often skip meals or eat at irregular times are more likely to get hunger headaches. Skipping meals can mess with your blood sugar levels, which can lead to headaches in some folks.

2. Those Following Strict Diets or Fasting

People who stick to strict diets or fast for reasons like losing weight, religious practices, or cultural traditions might be more likely to get hunger headaches. Not eating for a long time can mess up how your body works and mess with your blood sugar levels.

3. Individuals with Diabetes

People with diabetes, especially those taking meds to lower blood sugar, might be more prone to hunger headaches if their blood sugar drops too much. Keeping an eye on blood sugar levels and eating balanced meals can help prevent these headaches in people with diabetes.

4. Individuals with Caffeine Dependency

People who drink a lot of caffeine and suddenly cut back or go without it for a while might get headaches similar to hunger headaches due to caffeine withdrawal.

5. Those with High Stress Levels

When you're stressed, you might not feel like eating regularly, which can make you more likely to get hunger headaches. If stress keeps you from eating well or skipping meals often, it can up your chances of getting these headaches.

6. Children and Adolescents

Kids and teens might get hunger headaches more often if they skip meals because they're busy or picky eaters. Making sure they eat regular, healthy meals and snacks can stop hunger headaches.

7. People with Certain Medical Conditions

Some health issues like eating disorders or stomach problems can raise the chances of hunger headaches. It's important to handle these problems and work with doctors to have healthy eating habits, which can help reduce the risk of hunger headaches.

When to See a Doctor

If hunger headaches keep happening despite trying to prevent them or if they greatly affect daily life, it's best to see a doctor. A healthcare provider can find out what's causing the headaches and suggest treatments. Also, if hunger headaches come with severe symptoms like throwing up, vision problems, or changes in how you feel or think, it's important to get medical help quickly to rule out more serious problems. Seeing a doctor regularly can also help keep track of any health issues that might be linked to hunger headaches.

Are hunger headaches disrupting your daily life? Seek expert guidance and personalized care at Center One Medical. Our team of experienced healthcare professionals is dedicated to providing compassionate care and comprehensive solutions to help you overcome hunger headaches. Don't let hunger headaches hold you back. Contact us and schedule an appointment with Center One Medical today to take control of your health and well-being.


In conclusion, hunger headaches can really affect your day if you don't deal with them. Knowing why they happen and how to handle them helps you avoid and ease hunger headaches. Making sure you eat regular meals, stay hydrated, eat balanced meals, and manage stress can help stop headaches before they start.


1. Can skipping meals cause hunger headaches?

  • Yes, skipping meals or going long periods without eating can lead to hunger headaches due to drops in blood sugar levels.

2. Can hunger headaches be a sign of a more serious medical condition?

  • Yes, hunger headaches are usually not serious and go away when you eat. But if you have severe or lasting headaches, it might be a sign of something more serious. It's important to talk to a doctor if your headaches don't get better or get worse.

3. Are there specific foods that can help prevent hunger headaches?

  • Yes, certain foods can stop hunger headaches. Eating things like nuts, seeds, whole grains, fruits, and veggies can help keep your blood sugar stable and stop headaches.

4. Is it common to experience hunger headaches during periods of fasting or dieting?

  • Yes, it's common to get hunger headaches when fasting or dieting. These diets mess with your blood sugar, causing headaches.

5. When should I seek medical attention for persistent hunger headaches?

  • If your hunger headaches happen a lot, hurt badly, or make it hard to do your daily stuff, it's smart to talk to a doctor. They can check what's going on, make sure it's not something serious, and suggest ways to help.

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