What causes bad breath after sexual activity?

Generally, bad breath after sexual activity may be caused by poor lifestyle habits, indigestion, chronic gastritis, enteritis, or gastroesophageal reflux. Timely medical consultation is recommended. Specific causes are as follows:

1. Lifestyle habits: Neglecting oral hygiene and infrequent tooth brushing in daily life can lead to the aforementioned symptoms. It is advised to adopt a healthier lifestyle.

2. Indigestion: Some individuals experience indigestion due to gastrointestinal dysfunction, which may result in the above symptoms. People with indigestion can take medications such as Jianwei Xiaoshi tablets or Lactasin tablets under medical guidance to improve digestion.

3. Chronic gastritis: Individuals with chronic gastritis may experience slow digestion due to gastric inflammation, combined with stimulation from oral mucus, leading to the mentioned symptoms. Patients should take medications like Omeprazole tablets or Changweikang granules as prescribed by a doctor.

4. Enteritis: Patients with enteritis caused by long-term improper diet or irregular sleep patterns may also develop these symptoms. Such patients should take medications like Enteritis Relief tablets or Norfloxacin capsules under a doctor's supervision.

5. Gastroesophageal reflux: When the esophagus and stomach malfunction, acid reflux can easily cause oral odor, resulting in the aforementioned issue. These patients may take medications such as Domperidone tablets or Omeprazole enteric-coated capsules under medical guidance.

The appearance of the above symptoms indicates underlying issues related to lifestyle or gastrointestinal health. Prompt medical evaluation and symptomatic treatment under a doctor’s supervision are necessary. Regular use of breath-freshening toothpaste and chewing sugar-free gum appropriately can help reduce oral odor.