Among the quieter indignities of aging is the erosion of oral health — and with it, sometimes, the confidence to speak closely with others. A small but carefully designed trial in Thailand has found that a specific probiotic strain, taken daily for two weeks, measurably reduced the sulfur compounds responsible for bad breath in older adults while also improving the underlying condition of their gums and teeth. The finding matters not because it solves the problem, but because it suggests that rebalancing the mouth's microbial community — rather than suppressing or masking it — may be a more ho