よく言われている

commonly said

→ 良く
phrase Rare #36,755
commonly said Used for something that is often said or commonly believed. よく can also mean “well,” so in some contexts the phrase may mean “is often spoken of favorably.”
JA: 健康が一番大切だとよく言われている。
EN: It is often said that health is the most important thing.

彼は多くの人によく言われている

Many people often tell him that.

減量する良い方法は甘い物を食べることをやめることだよく言われている

It is often said that a good way to lose weight is to stop eating sweets.

忍耐成功への鍵であるとよく言われている

It is often said that patience is the key to success.