God wants the best for us in every ramification of our lives, even in our health. It takes good health to serve God properly. One of the things the devil does to hinder us to serve God as effectively as we ought to is by going after our health. Our well-being health wise should be of great concern to us.
Prosperity is not only financially. There's also the kind of prosperity that has to do with our health. We should not be too busy to look after our health. The real wealth is not just money but all a being healthy, which is why people often say "Health is wealth".
Our walk with God should not be a reason why we should say we cannot take care and pay attention to our health. We do not have any excuse. Taking care of ourselves and maintaining a healthy life is not just for the good of ourselves, it's also for the benefit of our family and those around us.
If we love them indeed we'll take care of ourselves so that at no point in time will they have a reason to worry about us because of poor health