[Editorial] Gender equality and equity: essential for health and society

The terms gender, equity, and equality have been fiercely contested and increaslingly instrumentalised over the past year. The Trump Administration's January 2025 orders to cease the use of the term gender in federal documents, to stop all funding that does not promote the male–female binary, and to terminate all diversity, equity, and inclusion programmes will have detrimental effects on health in the USA and abroad.