Wellness includes mental state, I think. You can be healthy as an ox at the same time as you're suffering from depression, but you wouldn't have wellness.
I respectfully disagree. To me, health is health. You can break that down into physical, mental, emotional, etc., but if you're healthy, you're healthy.
The Free Dictionary Health: 1. The overall condition of an organism at a given time. Wellness: The state of being in good physical and mental health
Merriam-Webster Health: The condition of being sound in body, mind, or spirit Wellness: The quality or state of being in good health especially as an actively sought goal.
Unnecessarily Redundant, IMHO.
Jack
"People generally quarrel because they cannot argue." - G. K. Chesterton