The Short Version
There is real but narrow peer-reviewed evidence — a 2024 RCT-based study — linking Mothers' Union nutrition programs to improved child anthropometric outcomes in Uganda and Nigeria. However, the claim's phrasing implies a robust, replicated evidence base that does not yet exist. Supporting literature on maternal empowerment and nutrition knowledge is consistent with the claim's direction but does not specifically validate Mothers' Union programs. Several cited supportive sources are self-reported by the organization itself.