What causes vomiting after dieting

Nausea and vomiting during dieting are usually caused by factors such as hypoglycemic reactions, imbalanced gastric acid secretion, electrolyte imbalances, psychological stress, and poor digestive system adaptation.

1. Hypoglycemic reaction:

Long term non eating can lead to a decrease in blood sugar levels, trigger sympathetic nervous system excitation, and cause symptoms such as dizziness, cold sweat, and nausea. The body attempts to alleviate the state of insufficient energy supply through vomiting response. It is recommended to adopt a small amount of multiple meals and choose low glycemic index foods such as oats and whole wheat bread to maintain blood sugar stability.

2. Imbalance of gastric acid secretion:

Continuous secretion of gastric acid on an empty stomach without food neutralization, excessive gastric acid stimulation of the gastric mucosa may cause acid reflux and heartburn. Long term fasting may also lead to bile stasis and exacerbate gastrointestinal discomfort. Moderate intake of alkaline foods such as soda crackers can alleviate symptoms.

3. Electrolyte imbalance:

Extreme dieting can easily lead to mineral deficiencies such as sodium, potassium, and magnesium. Hyponatremia can cause brain cell edema, while hypokalemia affects smooth muscle contraction in the gastrointestinal tract, which may manifest as nausea and vomiting. It is necessary to ensure at least 1500ml of drinking water and supplement with a moderate amount of diluted salt water daily. 4. Psychological stress: Excessive control of diet can activate the hypothalamic pituitary adrenal axis, and elevated cortisol levels directly affect digestive function. Some people's anxiety about hunger can manifest as nausea through somatic reactions, which is particularly common in patients with anorexia nervosa.

5. Digestive maladjustment:

Sudden reduction in food intake can cause gastrointestinal motility disorders, delayed gastric emptying, and fermentation of food residues to produce gas. At the same time, changes in gut microbiota structure may release endotoxins, which can trigger vomiting reflex through vagus nerve conduction. Suggest gradually adjusting food intake and supplementing with probiotics.

During dieting, it is recommended to maintain a daily intake of at least 70% of the required calories for basal metabolism, and prioritize high protein, high fiber foods such as eggs, fish, broccoli, etc. Low intensity exercises such as walking and yoga can promote gastrointestinal peristalsis. If vomiting is accompanied by persistent abdominal pain, confusion, or inability to eat for more than 24 hours, immediate medical attention should be sought to rule out serious complications such as ketoacidosis. Recording daily diet and symptom changes can help nutritionists develop personalized plans and avoid self medication to mask symptoms.