Stress is often called a 21st century illness

[Kharkhun]

Is the usage of by correct here?


Stress is often called a 21st century illness but it has always been with us if perhaps by different names.

 

[MikeNewYork]

I would use "with".

 

[Kharkhun]

Are there the other possibilities?

 

[MikeNewYork]

Why would you need alternatives?

 

[Freeguy]

Why would you need alternatives?

To improve my English.

 

[MikeNewYork]

Good answer. I can't think of another preposition to use there.

 

[tzfujimino]

The sentence is fine as it is, isn't it?

It can be interpreted as:

Stress is often called a 21st century illness, but it has always been with us if [it has] perhaps [been called] by different names.

Those words in square brackets are omitted.

 

[MikeNewYork]

In your restatement, I would use "even" before "if" and delete "perhaps".

 

[Roman55]

Are there the other possibilities?

I am not a teacher.

Yes, "under".