The prevention of venereal diseases is most important in safe sexual behavior.

Prevention of infectious diseases is important with hand washing and wearing masks.

Do you understand the necessity of this project?

Gonorrhea is one of the sexually transmitted diseases, and appropriate treatment is necessary.

He is suffering from heart disease.

That proposal is not appropriate.

I think he is appropriate for that job.

He finally recovered after a long period of medical treatment.

He went to the doctor to treat his severe cold.

He ate one apple.