"You don't know what you have until it's gone". This saying is especially true for your health. Random luck plays a large role, but you can make your own luck as well. With over 25 years of experience in family medical practice, Dr. Roger Smith has seen many telling examples of this.Just as you need to provide sufficient care for your car to keep it running well, your own personal vehicle (your body) is no different. If you neglect to service your car or ignore warning signs of tro...