Inasmuch as VS as, since and because

[Freeguy]

Is it correct to sat "inasmuch as" here instead of as, since or because?

Patients are often unwilling to admit to stress problems inasmuch as they feel they are a form of social failure and it is important that symptoms are identified in order to avoid unnecessary suffering.

 

[MikeNewYork]

Yes. It means "because of the fact that".

 

[Boris Tatarenko]

Do you use "inasmuch as" in spoken-English?
I rarely come across with this word, that's why I'm askign.

 

[MikeNewYork]

I don't use it much, if it all.