Socioeconomic disadvantage, such as unemployment and lower income is associated with ill health and is more likely to trigger unhealthy behaviours such as smoking.
Mae anfantais economaidd-gymdeithasol, fel diweithdra ac incwm is, yn gysylltiedig â salwch ac mae'n fwy tebygol o ysgogi ymddygiadau nad ydynt yn iach, fel ysmygu.