For most, the disease doesn't become noticeable until your 40s or 50s, says Sim K Singhrao, senior research fellow in the school of dentistry at the University of Central Lancashire in the UK. By this time, severe damage may already have undermined the tooth's architecture, risking tooth loss. Meanwhile, the infection has sent a steady drip of bacteria, such as Treponema denticola and Porphyromonas gingivalis, around the bloodstream for decades.





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