There's been numerous studies showing that Magnesium (and the balance of magnesium vs calcium) plays a crucial role in many bodily function including brain func

There's been numerous studies showing that Magnesium (and the balance of magnesium vs calcium) plays a crucial role in many bodily function including brain functions and reducing depression. I suspect what's happening here is that these people are eating more veggies and nuts and whole grains thus getting more magnesium in their diet.