This is the 570th most frequent Estonian word.
kasuks
"Kasuks" means "for the benefit" or "to the advantage" in English.
Here, 'kasuks' denotes something advantageous for the subject's health.
Tervislik toitumine on su kehale kasuks.
Healthy eating is beneficial for your body.
'Kasuks' in this sentence is used to indicate a benefit or advantage derived from the decision.
See otsus tuleb kõigile kasuks.
This decision benefits everyone.
In this case, 'kasuks' reflects the helpfulness or utility of the advice given.