Some adopted children may also be at increased genetic risk for developmental difficulties (such as ADHD or autism spectrum conditions) and mental health difficulties.
Gall fod risg geneteg uwch hefyd y bydd rhai plant a gaiff eu mabwysiadu yn wynebu anawsterau datblygiadol (fel ADHD neu gyflyrau ar y sbectrwm awtistig) ac anawsterau iechyd meddwl.