2. Citrus Fruits

Citrus fruits have a high amount of fruit acids. There occurs an increase in acidity and gastritis because of these acids present in citrus fruits. People who have diabetes should strictly abhor citrus fruits on an empty stomach as it is extremely harmful to them. Fruits such as oranges, lemons, and grapefruit etc. are highly acidic and on mixing with our digestive juices can cause heartburn, irritation, and other gastric problems. Additionally, fruits have high sugar levels which give us another reason to avoid taking them early in the morning.