weight-watcher

a person who monitors their body weight, especially when wanting to slim.

Japanese Meaning

体重管理を行う人、特に体重を減らすことを意識して体重をチェックする人

As a committed weight-watcher, Maria steps onto the scale every morning and adjusts her meals accordingly.

体重管理をしている真剣なマリアは、毎朝体重計に乗って食事を調整します。

Sense（1）

a person who monitors their body weight, especially when wanting to slim.

weight-watchers

（ plural ）