Grammar fix
negative effect
bad impact
A result or influence that causes harm, problems, or makes a situation worse.
collocationB1common
Hear it in context
Notice where the phrase sounds natural.
Too much screen time can have a negative effect on your sleep.
In my opinion, pollution has a negative effect on people's quality of life, especially in big cities.
Fix the pattern
One small grammar move makes it sound right.
Not: It has a negative affect on sleep.
Say: It has a negative effect on sleep.
The noun is 'effect'; 'affect' is the verb (it affects your sleep).
Which sounds natural?
Tap the one a native speaker would say.
'Detrimental impact upon one's wellbeing' is essay-speak; 'negative effect on' is plain.
Build natural chunks
Words that usually travel with it.
a negative effect on
- a negative effect on
- have
- harmful
- knock-on effect