Ok, I've watched the video and have come back to this thread and I'm surprised that no-one else has commented on it considering how fundamental to soundness, hoof health is. I know it's long (53 mins) but I found it very interesting and I recommend that everyone who owns a horse with hooves p) watches it.
I'm also wondering if I can improve my mare's hooves more than they have already. I'd really love to sort out a pea shingle area for them, even if it's just a small patch that I lead them over regularly.
I watched this a while ago and then spent a few days obsessing over it (and despairing over all the things I really wish I could do to improve my horses management but can't cos I'm on a livery yard who aren't very open to modifying what's already there). Utterly fascinating. Also got me thinking about the little things that maybe aren't being looked for / at on imaging that could be more significant than currently realised
I loved her comment about BF people "knowing" and science now having to catch up. Quite chuffed to see my trimmers name on one of the research papers quoted.