Bad breath is an offensive odor coming from the mouth. The most common cause is poor digestion. Some say constipation may also cause bad breath. Medications which block or reduce stomach acid may cause bad breath. Sinus problems may also be a cause. Very rarely, bad breath may be a sign of tuberculosis, syphilis, cancer, or even AIDS. Other causes include smelly foods (sardines, garlic, onions, salami, or other strong smelling foods), hunger, or dental problems. Remember to have regular dental checkups. Modern medicine doesn’t usually treat bad breath unless a severe medical problem is seen. Bad breath is not treated by doctors with the exception of examining teeth for…