Some people with liver disease must eat a special diet. This diet helps the liver function and protects it from working too hard. Proteins normally help the body repair tissue. They also prevent fatty buildup and damage to the liver cells.
Advise is a verb, and advice is a noun. So advice is what is given, while the act of giving advice is called advising (or to advise).
Instructing a person on how to phrase information in a legal document or form, or advising the person as to what he or she should say in court, is the provision of legal advice. Similarly, application of legal rules and principles to a specific set of facts and advising a course of conduct is almost always held to constitute legal advice.