MD and BS in health sciences?

I'm a med student and I want to purse a second degree in health sciences/public health. It's a 4-year degree too. How would this benefit me? Does it open new opportunities for me in the future as a doctor? What are some possible ways to find a position where I can use both of my degrees? Thanks.
Source: Student Doctor Network - Category: Universities & Medical Training Authors: Tags: Public Health Degrees (Masters and Doctoral) Source Type: forums