The Global Alliance for Improved Nutrition (GAIN) is a foundation based in Switzerland focused on reducing world malnutrition.

Evaluation

GAIN implements a wide range of programs, only one of which—its universal salt iodization (USI) program—has been evaluated by GiveWell. In GiveWell's assessment, the cost-effectiveness range of salt iodization is very close to that of their priority programs (GiveWell 2014), though they are less certain about the cost-effectiveness of GAIN's USI program (GiveWell 2016).

USI was a GiveWell standout charity from 2014 to 2021, when that designation was discontinued. USI is also featured by The Life You Can Save in their list of "best charities" (The Life You Can Save 2021).