Mae’r GIG wedi esblygu’n barhaus ers ei sefydlu ar 5 Gorffennaf 1948. Pan aeth Aneurin Bevan ati i sefydlu’r gwasanaeth iechyd, byddai wedi bod yn amhosibl dychmygu’r math o ofal a roddir i bobl heddiw. Diolch i ddatblygiadau mewn technoleg, meddyginiaethau, ac arferion clinigol, mae’r GIG yn rhoi gofal a thriniaeth i bobl a fyddai fel arall wedi marw yn y gorffennol.
The NHS has evolved continually since its inception on 5 July 1948. The way in which people are cared for today would have been unimaginable when Aneurin Bevan established the health service. Thanks to advances in technology, medicines and clinical practice, the NHS is caring for, and treating, people who would have otherwise died many years ago.