Contaminated food is a major cause of diarrhea, substantially contributing to malnutrition and killing about 2.2 million people each year, most of them children.

The diagnosis is clear, the science in unequivocal-it's completely immoral, even, to question now, on the basis of what we know, the reports that are out, to question the issue and to question whether we need to move forward at a much stronger pace as humankind to address the issues.

During my nearly five years as director-general of WHO, high-level policymakers have increasingly recognized that health is central to sustainable development.

Such lifestyle factors such as cigarette smoking, excessive alcohol consumption, little physical activity and low dietary calcium intake are risk factors for osteoporosis as well as for many other non-communicable diseases.

Women's health is one of WHO's highest priorities

When public and private sectors combine intellectual and other resources, more can be achieved

There is a very close connection between being a doctor and a politician. The doctor tries to prevent illness, then tries to treat it if it comes. It's exactly the same as what you try to do as a politician, but with regard to society.