If your guy is skipping out on his good brushing habits, he may be doing more than leaving himself with some bad breath. Poor dental hygiene may hamper his ability to get hard, finds new preliminary research from Taiwan. In the study, men with erectile dysfunction (ED) were 79 percent more likely to have been diagnosed with chronic periodontal disease (CPD) than guys without ED. CPD is a disease that occurs when the gums pull away from the teeth, creating pockets where bacteria can seek refuge and allow bugs to spread to the bone surrounding the teeth. Chronic inflammation caused by gum disease may damage his endothelial cells, which form the lining on all of the blood vessels—including those in his penis. The endothelial damage can result in impaired blood flow, leaving him limp in the sack, says Larry Lipshultz, M.D., a urology advisor for Men’s Health. The blood vessels in his penis are 25 percent of the ones to the coronaries and because of this ED may serve as an early warning sign for heart problems and vascular disease. If he's having some troubles, encourage him to consult a doctor to make sure. The research suggest that tooth extraction can help reduce ED but that isn't necessary in the United States. If caught early, it can be treated with a few deep cleanings from the dentist. If it’s discovered later on, gum surgery to reduce the pockets and restore some of the bone loss may be necessary, says Sally J. Cram, consumer advisor for the American Dental Association (ADA). Once it is under control, Cram suggests booking more frequent cleanings. Go from a 6 month recall to a 3 month. People how have had periodontal disease are more likely to get it again so he needs to take precautions and monitor for symptoms. "Most people who have the disease don’t feel pain until it is in the advanced stages so be sure to see your dentist if you experience red swollen gums, bleeding gums when brushing, bad breath, loose teeth, and receding gums,” says Cram. The good news, and by now you might need some, periodontal disease is completely preventable. Just make sure your guy is brushing for two minutes twice daily with a fluoride toothpaste—look for an ADA Seal of Acceptance for best results—have him floss once per day, and make sure he drags himself to the dentist for regular cleanings and checkups, says Cram. (Check out some common brushing mistakes here to keep him ahead of the game).