Mae tystiolaeth yn awgrymu bod plant sy'n profi plentyndod anodd ac o ansawdd gwael yn fwy tebygol o fod ag iechyd meddwl gwael a datblygu problemau iechyd hirdymor wrth iddynt dyfu'n oedolion.
There is evidence to suggest that children who experience stressful and poor quality childhoods are more likely to experience poor mental health and develop long term health problems as they move into adulthood.