Despite what many late night infomercial spokespeople may claim, there's no magic pill that can make you lose weight. Even the fat burners that have shown some promise still require that a healthy diet and regular exercise program are still followed.

Could it be possible that it's the diet and exercise that's actually causing the weight loss, and that the fat burner pills have no impact whatsoever? It's entirely possible, actually. And, there are some definite cons to using fat burners, chief among them being an increase in blood pressure. What's more, certain fat burners may also disrupt sleep cycles if taken too close to bedtime, in addition to causing some people to feel jittery and anxious.

So, even if there is any truth to the claim that fat burners can help boost metabolism, it may be at the expense of your overall health.