adolescence – n. the period of life between childhood and adulthood

diagnose – v. to recognize a disease, illness, etc. by examining someone

fatal – adj. causing death

gonads – n. sex organs that produce sperm or eggs; testicles or ovaries

lifestyle – n. a particular way of living; the way a person lives or a group of people live

tumor – n. a mass of tissue found in or on the body that is made up of abnormal cells