United Nations Secretary General Ban Ki-moon has said the "UN will do everything in its power to overcome malnutrition."
He added: "We must empower women so they are well nourished before and during pregnancy so they can breast feed."
The UN chief was talking via video link at an international meeting in London with charities and companies, aimed at combating malnutrition in the developing world.
David Cameron is due to talk shortly.
More top news
Robert Brown admitted causing the deaths of the two young brothers by dangerous driving at a hearing in March.
How do Nintendo’s new cardboard-based gaming sets work?
The self-build crafting sets incorporate the Nintendo Switch games console to create dynamic play sets.