Over the last year we have inter­viewed a num­ber of lead­ing brain health and fit­ness sci­en­tists and prac­ti­tion­ers world­wide to learn about their research and thoughts, and have news to report. What can we say today that we could­n’t have said only 10 years ago? That what neu­ro­science pio­neer San­ti­a­go Ramon y Cajal claimed in…