Mariam Nabatanzi gave birth to twins a year after she was married off at the age of 12. Five more sets of twins followed - along with four sets of triplets and five sets of quadruplets.
Three years ago, however, the 39-year-old Ugandan was abandoned by her husband, leaving her to support their surviving 38 children alone.
It was just the latest setback in a life marred by tragedy for Nabatanzi, who lives with her children in four cramped houses made of cement blocks and topped with corrugated iron in a village surrounded by coffee fields 50 km (31 miles) north of Kampala.
After her first sets of twins were born, Nabatanzi went to a doctor who told her she had unusually large ovaries. He advised her that birth control like pills might cause health problems. So the children kept coming.