How long can a human live without water How long can human live without food? A human can't live without food for 3 or 4 days (however your body type is,) and a human can't live without water for 2 or 3 days.
Cavities refer to tooth decay, which occurs when specific types of bacteria produce acid that destroys the toothâs enamel and its underlying layer, the dentin. Signs & Symptoms. Cavity symptoms include: 1  Toothache. 2  Sensitivity to sweet, hot or cold foods or drinks.
cavity formation in teeth caused by bacteria that attach to teeth and form acids in the presence of sucrose, other sugars, and refined starches; tooth decay. Also called caries. dental cariesâtooth decayâis a disease hitherto almost universal from birth to death.