With iOS 15, Apple reveals just how far Health has come — and how much further it can go

Apple’s recent Worldwide Developers Conference (WWDC) keynote was packed with new features for iPhones, Macs and iPads — and like it has done pretty consistently since the debut of its original Health app in 2014, those included updates focused on personal health and wellness. Often, it’s impossible to assess the impact of the work Apple is...