I too suffered from bad breath since high school that seemed to get worse the older I got. In recent months, it had gotten so bad that people could literally smell it 10 feet away from me. I don't have to tell you the impact this had on my life....work, socially, publicly, romantically, etc. After countless hours on the internet searching for a cure, I finally found a site that suggested that ones dental health just might be the problem. I have to ask you, do you have gum or rotten teeth problems? Have you had root canals done at any point in your life? If so, the bad breath may be too much bacteria that has taken up residence in your mouth! I, myself, had a root canal done about 15 years ago. Come to find out, the tooth that was up under a porcelain crown, had cracked straight down the middle. It was not visible on x-rays because of the crown that was on it. The cracked tooth had allowed bacterial to access it and the bacterial is what was causing the Chronic bad breath. This tooth problem is also the reason why I ended up with chronic sinus problems and chronic post nasal drip, which I now have none of! I would suggest you check any possible problems with your teeth or gum extensively and don't take no for an answer (I had to lie to my dentist that the tooth was in excruciating pain in order to get him to agree to remove the crown; the tooth & the ligaments holding the tooth in place had to be pulled).