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bad breath

How often should you brush your teeth to avoid bad breath?

VnExpress

I often brush my teeth after every meal because I'm afraid of bad breath. Is this a good habit? How many times a day should I brush my teeth to protect them and reduce bad breath? (Linh Anh, 28, Ho Chi Minh City)

Does coffee stain teeth and cause bad breath?

VnExpress

I drink two to three cups of coffee every day. Recently, my teeth have become stained and yellow, and my breath has an unpleasant odor. Is this caused by coffee? (Mai Tram, 34, Ho Chi Minh City)

Three unexpected causes of bad breath

VnExpress

Sulfur-rich foods, food intolerances, and digestive disorders can increase the risk of bad breath.