Os yw unigolion dros eu pwysau, mae mwy o berygl iddynt ddatblygu cyflyrau iechyd difrifol fel clefyd coronaidd y galon, diabetes math 2, a rhai mathau o ganser. Mae hefyd yn effeithio ar iechyd meddwl pobl, gan arwain at hunan-barch isel, 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.