Hi.
this is what I found on askmen.com in the eating well section:
Do spicy foods boost metabolism?
Although spicy dishes do give your metabolism a slight boost, the effect is minor and it definitely won't make a significant difference if you're trying to shed some pounds. Some diet plans even claim that grapefruit and bee pollen raise metabolism and are useful for weight loss; unfortunately, there is no scientific basis for this belief.
If you really want to speed up your metabolism, exercise -- it has the greatest effect on caloric expenditure and metabolic rate. The good news is that you not only burn calories during exercise but also for an extended period of time after your workout depending on its duration and intensity.
However, you shouldn't rely exclusively on cardiovascular exercise (jogging, swimming, etc.) to rid yourself of those love handles. In fact, weight training plays an even more significant role by increasing muscle mass and decreasing body fat, which enables your metabolism to work harder all day to fuel your muscles. For each pound of muscle you gain, you can burn up to 60 more calories a day.
The Bottom Line: Forget all those miracle weight-loss solutions; start an exercise program that includes both cardiovascular exercise and weight training three to five days a week.