The NDNS is a continuous programme of fieldwork designed to assess the diet, nutrient intake and nutritional status of the general population aged 1.5 years and over.
Mae RhD ADMC yn rhaglen barhaus o waith maes a ddyluniwyd i asesu deiet, lefel maethynnau a statws maethol y boblogaeth gyffredinol 1.5 oed neu hŷn.