What you do in your 40's, 50's and 60's determines how healthy your brain is in your 70's and 80's. Brain volume shrinkage is normal as we age. But... When brain volume shrinks too much we are at a higher risk of Alzheimer's and Dementia. In today's podcast, Dr.Martin Jr discusses 6 mid life brain killers. If you want to protect your brain as you age, you don't want to miss this episode!