The vegan route didn't work well for my Human, either. He gave it a sincere try for about a year, but in spite of getting "professional advice" from a lifelong Vegan, was always tired and sluggish, and at the end of a year had to get back from a fairly severe case of anemia. With fish, dairy, eggs and organic beef back on the table, everyone's a lot healthier...
=^..^=
Thank you for sharing your experience with me. Perhaps, the lesson is that human cat lovers need meat? LOL!