What causes dizziness and nausea after going a day without eating?

Mar 28, 2023 Source: Cainiu Health

Dr. Yang Jun

Introduction

Dizziness and nausea after a day of fasting may be caused by dehydration, gastrointestinal motility disorders due to hunger, hypoglycemia, duodenal ulcers, gastritis, or other reasons. Prolonged lack of food and water intake can lead to dehydration, which affects blood circulation and the body's fluid and electrolyte balance, resulting in symptoms such as dizziness, nausea, and fatigue. If symptoms persist or worsen, immediate medical attention is recommended.

Dizziness and nausea after a day of hunger may be caused by dehydration, gastrointestinal motility disorders due to hunger, hypoglycemia, duodenal ulcer, gastritis, or other reasons. Specific details are as follows:

1. Dehydration: Prolonged lack of food and water intake can lead to dehydration, which affects blood circulation and the body's fluid and electrolyte balance, resulting in symptoms such as dizziness, nausea, and fatigue.

2. Gastrointestinal motility disorder due to hunger: Extended periods without eating can slow gastrointestinal motility, potentially causing gastrointestinal dysfunction and feelings of nausea.

3. Hypoglycemia: Not eating for an entire day may cause hypoglycemia, as the brain relies on blood glucose for energy. Prolonged fasting reduces blood glucose levels, depriving the brain of necessary nutrients and leading to symptoms like dizziness and nausea. Under medical guidance, intravenous administration of high-concentration glucose can be used to treat these symptoms and provide relief.

4. Duodenal ulcer: Duodenal ulcers may be associated with Helicobacter pylori infection. Under medical supervision, medications such as omeprazole tablets or mosapride tablets can be prescribed for treatment.

5. Gastritis: In a state of hunger, the gastric mucosa is more susceptible to damage from gastric acid. If gastritis is already present, prolonged fasting may worsen symptoms, including dizziness and nausea. Under medical guidance, drugs such as compound lactase capsules or bismuth potassium citrate tablets may be used for treatment.

If symptoms persist or become severe, immediate medical attention is recommended.

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