Stress have positive effects on our memory as well as having negative effects on hair

[middleage S]

Stress have positive effects on our memory as well as having negative effects on hair growth and digestion.


I wrote the sentence myself. Is the sentence above grammatically correct?

 

[jutfrank]

No. Look at the first two words.

 

[middleage S]

Do I have to change 'Stress' into 'Stresses' ?

 

[Yankee]

No, but you're close. ;-)

 

[middleage S]

Stress has positive effects on our memory as well as having negative effects on hair growth and digestion.

Do I have to change like this....?