Understanding low cholesterol

Patient: What does having low and very low cholesterol levels mean? I had my physical done and had blood work. It came back with low and very low cholesterol levels . Total cholesterol 95, triglycerides 21 hdl 57 ldl 34. What do these numbers mean? Are they good or bad?

Symptoms: Total cholesterol 95 ,triglycerides 21, hdl 57, ldl 34

Doctor: