See cancer for the biology of the disease, as well as a list of malignant diseases. Oncology is a branch of medicine that deals with the prevention, diagnosis and treatment of cancer. A medical professional who practices oncology is an oncologist. The name's etymological origin is the Greek word á½Î³ÎºÎ¿Ï (Ã³nkos), meaning tumor, volume or mass.
1 An increase in maternal age affects the chances of miscarriage. 2  Women under the age of 35 yrs old have about a 15% chance of miscarriage. 3  Women who are 35-45 yrs old have a 20-35% chance of miscarriage. 4  Women over the age of 45 can have up to a 50% chance of miscarriage.
The risk of miscarriage is also far lower: It's about 10 percent for women in their 20s, 12 percent for women in their early 30s, and 18 percent for women in their mid to late 30s. Miscarriage risk jumps to about 34 percent for women in their early 40s, and 53 percent by age 45. Pregnancy is often physically easier for women in their 20s because there's a lower risk of health complications like high blood pressure and diabetes.