Baby got back — and better odds of longevity. For Robin Berzin, MD , founder and CEO of Parsley Health , living longer is less important than living better. And the functional medicine and chronic disease expert has developed a cheat code for the three health markers everyone, especially women, should prioritize if they want to feel good as they age. Berzin says the three Bs — brains, bones and booty — are some of the most chronically overlooked factors in building healthy bodies that can