I have this great book my Dr. Michael Spira (The doctors Diet) Lose a stone in 10 days, It is very low carb, the book is very interesting but he maintains adding either half a grapefruit (11g carbs) a glass of grapefruit juice before each meal speeds up the metabolism.
I havent been able to try before as I take statins for high cholestrol, but because Ive run out of them and I have a docs appt thursday, I'm experimenting, there is als a type of statin which yo can take with grapefruit so I'm going to suggest to doc.
So I'll give anything a try within reason!
sue xx