Hmmmm....well, I've never noticed that it helped or hurt with my rate of loss, but I never was a real heavy caffeine person....not like some I know!

I would say it depends on how much caffeine you consume. If you drink more than 3 cups of coffee/day or the equivalent in sodas, tea, etc., then you may want to at least cut back. It would be a good idea in any case...Caffeine in excess of 250mg/day is not very good for you.