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.
Dental cavities are permanently damaged areas that often develop into holes in the enamel, or hard outer surface, of your teeth. Cavities are also known as tooth decay or caries. Anyone with teeth can get a cavity, but they are most common in small children and young adults.