Foods that contain yeast such as cookies or biscuits can irritate the stomach lining and cause bloating.

Consuming sugar significantly increases insulin levels, which will add to the workload of the pancreas. Consuming sugar on an empty stomach can cause diabetes.

Eating yogurt on an empty stomach, the hydrochloric acid formed in the stomach can kill lactic acid bacteria. Therefore, consuming such products for breakfast is almost pointless.

The rough fiber found in pears can injure the empty mucous membrane or gastric mucosa.

Tomatoes contain high levels of tannic acid, which can increase acidity in the stomach. This can cause stomach ulcers.

Raw vegetables are a source of food rich in amino acids. However, they can cause stomach pain, bloating, and abdominal pain, especially when consumed on an empty stomach.

Eating bananas on an empty stomach will cause a sharp increase in the amount of magnesium in the blood. Therefore, consuming bananas on an empty stomach is detrimental to the heart.

Spicy food causes damage and irritation to the gastric mucosa and increases acid production in the stomach. This results in many common digestive system disorders.

Drinking carbonated beverages in the morning can damage the mucous membrane and reduce blood supply to the stomach. As a result, food digestion becomes slower.