to benefit from sth/sb?

[Verona_82]

Dear teachers,

could you tell me if it's possible to say "to benefit from somebody", please?
According to dictionary definitions, you benefit from something.

Would it be icorrect to say "Private clinics ususally want to benefit from people having some health problems"?
If not, what would be a correct alternative?
"to cash in on somebody"?
"to take advantage of somebody"?

Thank you in advance.

[Verona_82]

I'd be very grateful if someone could help