negatywny efekt

It can also have a negative effect on growth and development.

He hadn't considered the possible negative side effects of having so many people looking up to him.

Teachers with less than 3 years experience showed a small negative effect in their value added.

There also seem to be some negative effects on the learning process.

I have never had any negative side effects in all this time.

"I think it will have a negative effect on all of those."

It can be used to positive or negative effect on others.

These can have both positive and negative effects on human health.

This has negative effects on the environment and the health of the human population.

"This is going to have very negative effects on the whole region."