A little pink in the sink when you brush — do you just rinse it away? Follow five people — a builder who lives on energy drinks, a retired teacher whose teeth seem to be getting longer, a mum-to-be with bleeding gums, a shop owner whose diabetes and gums affect each other, and a young woman whose gums bleed at a touch after months of dieting — to understand how bleeding gums turn into gum disease, who is most at risk, how to care for your gums at home, how Chinese medicine se