Interested in functional medicine?   We talk with Dr. Nisha Jackson today about what she's learned in almost 30 years of treating patients. Nisha says, "we look at a number of factors, hormones, nutrient levels, exercise, sleep. What we really do is do an analysis, how they're doing, and what they have been doing and their past medical history and family history. We devise a program for them that's really aimed at trying to optimize where they need to be."