Sylwer fod y cymhwysiad hwn dan ddatblygiad. Os ydych chi'n gweld unrhyw gamgymeriadau neu os nad yw rhywbeth yn gweithio, cysylltwch â ni yn evidence.service@wales.nhs.uk.
Arweiniad
Dywed yr awduron:
"This guideline covers a set of principles that can be used to help people change their behaviour. The aim is for practitioners to use these principles to encourage people to adopt a healthier lifestyle by, for example, stopping smoking, adopting a healthy diet and being more physically active."
Dywed yr awduron:
"This guideline recommends a set of principles to use as the basis for: