They should have additional certification in substance abuse. There is so much going around, and people all over the world is becoming addicted to drugs more and more these days. If the human service professional has certification within this area, she could better respond to those who are addicted to drugs. Addiction is a disease that is quite hard to overcome for some people. Human service professionals are there to help us and with that being said, if they are certified in the treatment of substance abuse, they could better serve the community.