The Word of Wisdom is a law of health. The Lord cares about our physical selves as well as our spiritual well being. By following the Word of Wisdom it helps with both our physical and spiritual well being.
All of the Lords commandments are important and there is a very good reason why the Lord has given us the word of wisdom. So many times I think that just because I don't use tobacco, drink coffee or tea, use alcohol, or do drugs I am good. But there is more than just that.