Mae bod dros bwysau yn cynyddu'r risg o ddatblygu cyflyrau iechyd difrifol fel clefyd coronaidd y galon, diabetes math 2 a rhai mathau o ganser. Mae hefyd yn beryglus o safbwynt iechyd meddwl pobl, gan arwain at ddiffyg hunan-barch, iselder a gorbryder.
Being overweight increases the risk of developing major health conditions such as coronary heart disease, type 2 diabetes and some cancers. It is also a risk to people’s mental health leading to low self-esteem, depression and anxiety.