On the surface, it may not seem like there is a huge difference between saying "God Causes" and God Allows", but I felt that this classic video teaching by Charles Capps from 1985, deals beautifully with this often misinterpreted and misrepresented issue. The actual title of his teaching is "How Christians Avoid Tragedy" and while God's will concerning our health and wellness may not be the specific topic, it gives a great foundation to understand and appreciate the fact that, concerning our well being, God is not our problem; He's our solution. He's not against us; He's for us.
YashaLife's Various Resource Teachings
Various videos, PDFs, and charts giving enlightening views of health and wellness from biblical, medical and scientific perspective.