38% of 500 Americans surveyed are highly concerned about their long-term brain health Who would use a non-invasive brain-sensing device: - 39% to improve sleep, focus or mood - 29% to control devices with their thoughts - Men more than women on both, 48% vs. 31% and 41% vs. 18% "This all sounds like science fiction, but we're betting in our lifetimes, brain-computer interfaces and 'wearables' for the brain become a real consumer category and part of everyday life." Full longevity survey breakdown from a16z's Daisy Wolf and Eva Steinman: https://www.a16z.news/p/the-state-of-longevity