A new report says that women who do not have children may die earlier than those who do. Researchers Aarhus University Denmark looked 21,000 couples 1994 and 2005. They all tried to have children, success. The women all went to special clinics IVF treatment – a technique where doctors fertilize the woman’s egg a laboratory. The researchers said that women who could not have children were four times likelier than mothers to die early. Some doctors have said the report might cause childless women to worry dying early. The truth is there is a very small risk an early death. Just 316 women died the 11-year study. Very few those died earlier than average. One critic the report said the study was very misleading. Dr Ingrid Collins, a psychologist, told the BBC: "This is a very specific situation people who are trying to have children. The study's findings cannot be used to [talk ] the whole general population." She added: "People having IVF tend to be desperate a child. If they are unsuccessful, they may be depressed. It may be this [depression] rather than the childlessness that [causes an earlier death]." Another psychologist, Dr Helen Nightingale, agreed, saying: "Being childless a doubt reduces your fight life….The support a family, the focus your children and grandchildren, and the desire to watch how they turn drives your [will] to survive."