(something) is beneficial

"Beneficial" means "good" or "helpful". It sounds academic, so you use it in sentences like this:

The omega-3 fatty acids contained in fish oil are beneficial to early cognitive development and cardiovascular health.

Research on the beneficial effects of low-carbohydrate diets is increasing.

Some common collocations for "beneficial" are:

beneficial effects

mutually beneficial

a beneficial relationship

This phrase appears in these lessons: