N=1, but I have an autoimmune disease that has reacted extremely well to lifestyle (stress & diet) changes after years of expensive drugs failing. Or regression to the mean happened. Or a recent solar flare fixed what was wrong with me. Nobody knows.
Doctors are great but they’re overworked and the amount of time required to truly help patients isn’t feasible. When science doesn’t have any easy solution to your problem self care (or tons of money) is the only option - which makes it awesome to see products like those in the OP! Hopefully it’ll be a step up from a lot of the snake oil self care out there.