The global trend towards smaller families is a reflection of people making reproductive choices to have as few or as many children as they want, when they want.

Information Notes are compiled for Members and Committees of the Legislative Council of Hong Kong.

China boasts one of the largest adolescent populations in the world, with 165 million in total (United Nations, 2017).

Globally, half of students aged 13–15 experience peer-to-peer violence in and around school. This violence has short-term effects on their educational achievement and leaves a long-term impression on their futures.

The document summarizes priority areas for WHO action based on global evidence. Improving the health and development of children and adolescents means that WHO will need to shape its implementation of the strategy to the epidemiological needs of specific regions and countries.