superdiet means A diet with remarkable health or slimming properties. Lexicurio rates it Sui generis — a strength score of 87 out of 100.
Etymology
From super- + diet.
noun
- A diet with remarkable health or slimming properties.“John just "finished" one of the superdiets you've read about, and when he got down to his goal weight — 150 pounds — he began eating everything he liked...”