When creating a switchy profile with an origin that has less than the standard max health (example arachnid), that lower max HP is retained across all profiles you switch on that world.

Performed on Switchy build 3.7.2 (fabric) for 1.21.1 with Origins and no other mods, by first creating a profile with the human origin (default 10 hearts), then creating a second profile set as an arachnid (default 7 hearts) then switching back, the human profile retains the 7 heart max. Same bug happens with other origins that manipulate max health to be lower.