According to the new study, women who have a family history of breast cancer are at a higher lifetime risk of developing the disease than other women and should follow stricter guidelines to help detect breast cancer early, when the treatment is often less invasive and the chances for survival are much higher.
Definition of seesaw for English Language Learners. : 1  a long, flat board that is balanced in the middle so that when one end goes up the other end goes down. : 2  a situation in which something keeps changing from one state to another and back again.
In most of the United States, a seesaw is also called a teeter-totter. According to linguist Peter Trudgill, the term originates from the Nordic language word tittermatorter. A teeter-totter may also refer to a two-person swing on a swing seat, on which two children sit facing each other and the teeter-totter swings back and forth in a pendulum motion.