What Is Hunger Headache?


Have you ever experienced a dull headache while you were hungry that vanished after eating? Are you interested in learning some practical tips to prevent such headaches?

A hunger headache is a mild ache that arises when you haven't eaten for an extended period of time. Although it typically subsides after having a meal, there are methods to avoid or relieve such headaches, even if you aren’t able to consume regular meals. When your blood sugar levels drop below normal levels, which is known as low blood sugar or hypoglycemia, you may experience a "hypo." This can occur for various reasons, such as taking excessive diabetes medication, not eating enough, or engaging in excessive physical activity without eating. When your blood sugar drops too low, you may encounter symptoms like sweating, shaking, confusion, and, in severe cases, fainting. It's crucial to receive treatment for low blood sugar promptly to prevent further complications. This article will provide you with information on hunger headaches, their symptoms, management, and treatment, as well as their diagnosis.

Causes of hunger headache

There are two types of headaches: primary and secondary. Primary headaches, like migraines and tension headaches, have no known cause or underlying health problem. Secondary headaches, on the other hand, are caused by an underlying medical condition, like a brain tumor, an aneurysm, or exposure to certain substances. The most common type of secondary headache is caused by a problem with the body's internal system that maintains balance and stability, called homeostasis. If you get a headache from fasting, that could be a sign of a problem with homeostasis.

Both hunger and low blood sugar headaches can occur due to various reasons. Not drinking enough fluids, following new diets, consuming too much or too little coffee or soda, eating at irregular times, having a busy day without eating, not getting enough sleep, and skipping meals are a few examples. If you have diabetes, you're at risk of low blood sugar due to factors like taking too much insulin or other diabetes medications, skipping meals, not consuming enough carbohydrates, engaging in intense exercise, or drinking alcohol. Although it's rare, low blood sugar can also affect individuals without diabetes, and at times, it may happen without any apparent reason.

Signs and symptoms of hunger headache

It's important to be aware that low blood sugar affects everyone differently, and it's crucial to recognize the symptoms that you personally experience. Some common early signs of low blood sugar include sweating, fatigue, dizziness, hunger, and shaking. You may also feel anxious, moody, or experience palpitations. If left untreated, low blood sugar can cause weakness, blurred vision, confusion, slurred speech, or even seizures. It's also possible to experience low blood sugar while sleeping, which can cause you to wake up during the night or feel tired and have damp sheets from sweating in the morning. To prevent complications, it's vital to monitor your blood sugar levels regularly and seek medical attention if you experience any of these symptoms. Many people report that skipping meals or fasting can trigger migraine or tension-type headaches. Studies show that between 39% to 82% of adults who experience these types of headaches believe that not eating is the cause. In a recent study with over 1,200 migraine patients, 57% reported that not eating was a trigger for their headaches, ranking it alongside stress, hormonal changes, and sleep disturbances as the most common triggers. Fasting as part of religious practices like Yom Kippur and Ramadan has also been linked to an increased risk of headaches, with longer periods of fasting associated with a higher risk. Remember, recognizing the signs early and seeking prompt medical attention can make all the difference in managing low blood sugar.¹

Management and treatment for hunger headache

If you get headaches because of low blood sugar levels, you can manage them by eating small, healthy meals often throughout the day. Don't skip meals, especially breakfast. Instead of a sandwich, have a proper meal for lunch, and if you have lunch early, have a snack in the afternoon to avoid getting too hungry. If you wake up with a headache, try having a healthy snack before bed. To keep your blood sugar levels steady, focus on eating a healthy diet with lots of fruits and vegetables, and limit your intake of cakes, biscuits, ice cream, processed foods, and ready meals. If you're trying to lose weight, aim for a gradual, long-term approach to make it easier to keep the weight off.


To diagnose a hunger headache, you can rely on your body's signals. If you experience a dull pain in your head and it has been a while since you last ate, it is likely that you are experiencing a hunger headache. These headaches are often associated with low blood sugar levels, which can occur when you go for extended periods without eating. If eating something makes the headache go away, it is a good indication that it was caused by hunger. However, if your headaches persist or are severe, it is advisable to consult a doctor to rule out any underlying medical conditions.


How can I prevent hunger headache?

To minimise the possibility of experiencing hunger and low blood sugar headaches, there are  few things you can do. First, it's important to stay hydrated by drinking water consistently throughout the day. Additionally, eating more frequent, smaller meals can help keep your blood sugar levels stable. Getting a good night's rest is also crucial in regulating your body's natural processes and ensuring that you wake up feeling refreshed. Finally, taking breaks throughout the day to have snacks or meals can help prevent you from going too long without sustenance. By following these simple steps, you can reduce your risk of experiencing hunger and low blood sugar headaches.

How common is hunger headache?

Low blood sugar, also known as hypoglycemia, is a relatively common condition, particularly among people with diabetes who use insulin or other medications to manage their blood sugar levels.

Who is at risk of hunger headache?

Individuals with diabetes, particularly those who take insulin, are at an increased risk of developing this condition.

What can I expect if I have hunger headache?

You may experience pain in the front of your head that extends to both sides, along with mild nausea and muscle tension in your neck or shoulders. If you're experiencing low blood sugar headaches, you may also feel abdominal pain, dizziness, fatigue, and sweatiness.

When should I see a doctor?

If you have mild headaches that don't go away with over-the-counter medications, require more than the recommended dose, or interfere with your daily activities, it's a good idea to see your healthcare provider. They can help determine the underlying cause of your headaches and recommend appropriate treatments. However, if you experience a sudden, severe headache along with other symptoms like confusion, dizziness, slurred speech, or vision loss, it could be a sign of a stroke. In this case, it's important to seek immediate medical attention. By being aware of the symptoms and seeking prompt care when necessary, you can manage headaches more effectively.


Hunger headaches result from low blood sugar levels due to missed or delayed meals. Symptoms include fatigue, dizziness, hunger, and headaches that go away after eating. Low blood sugar can occur due to diabetes medication, skipping meals, irregular diet, or lack of sleep. Diagnosis relies on experiencing headaches that are relieved by eating. Treatment involves eating smaller, frequent meals and limiting sugary foods. Fasting during religious observances may also raise headache risk. To prevent hunger headaches, stay hydrated, eat small regular meals, get enough sleep, and take breaks to snack. See a doctor if headaches worsen, interfere with daily life or sudden severe headaches occur with confusion or vision loss.


  1. Turner DP, Smitherman TA, Penzien DB, Porter JAH, Martin VT, Houle TT. Nighttime snacking, stress, and migraine activity. Journal of Clinical Neuroscience. 2014;21(4):638–43. doi:10.1016/j.jocn.2013.08.013. Available from: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3959563/
This content is purely informational and isn’t medical guidance. It shouldn’t replace professional medical counsel. Always consult your physician regarding treatment risks and benefits. See our editorial standards for more details.

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Aamal Alshihawi

Bachelor of Science in Public Health, Asian University for Women, Bangladesh

Aamal is a public health practitioner with experience in research and management roles in the NGO sector. She has two years of experience in health promotion, mental health, and research. Also, she works in the education sector and has over two years of experience in curriculum content development and design. She is working now as an internship coordinator.

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