Dr. Ronald Johnson:

What the WHO says about that is on page 92 of our guidelines, as follows:

The fulfilment of human rights requires that women can access safe abortion when it is indicated to protect their health. Physical health is widely understood to include conditions that aggravate pregnancy and those aggravated by pregnancy. The scope of mental health includes psychological distress or mental suffering caused by, for example, coerced or forced sexual acts and diagnosis of severe fetal impairment. A woman’s social circumstances are also taken into account to assess health risk.

In many countries, the law does not specify the aspects of health that are concerned but merely states that abortion is permitted to avert risk of injury to the pregnant woman’s health. Since all countries that are members of WHO accept its constitutional description of health as “a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity”, this description of complete health is implied in the interpretation of laws that allow abortion to protect women’s health.