What causes bad breath in the morning?

When I wake up early in the morning, I find that my breath is very bad. I believe it will definitely affect my mood. When this happens, it may be due to the body getting inflamed, or it may be due to oral diseases such as periodontitis, tooth decay, etc., which can cause bad breath.

1. The amount of sulfide in the mouth is highest in the morning

This is because: the oral cavity is the birthplace of bad breath. The sulfur-containing protein produced by the "fecal reef" in the intestine is decomposed by anaerobic bacteria in the mouth to produce volatile sulfide (VSC). Because saliva secretion decreases at night and the acidity in the mouth decreases, anaerobic bacteria become abnormally active in decomposing sulfur-containing proteins, and the sulfide (VSC) produced is more than at other time periods. Therefore, the morning when you wake up is the time when bad breath is the worst.

2. Eating too heavy a meal

Dinner is too "heavy", eating too much or eating too much meat or greasy food or using too much spicy and stimulating seasoning, too much strong flavor and not enough light food, dinner is too close to sleep, too much food is left in the stomach when sleeping, etc.

3. Constipation

Long-term constipation can cause harmful substances produced in the body to fail to be excreted in time and be absorbed into the blood, causing bad breath and symptoms of self-poisoning such as abdominal distension, loss of appetite, and irritability.

4. Oral diseases

People with oral diseases such as caries, gingivitis, periodontitis, oral mucositis, tooth decay, and periodontal disease are prone to the growth of bacteria in their mouths, especially anaerobic bacteria, which decompose to produce sulfides, emit a corrupt smell, and cause bad breath.