The number of natural health supplements on the market these days is rivaled only by the spectrum of miraculous benefits they claim to offer. From cultivating a better memory to maintaining peak immune-system strength, it seems Mother Nature holds all the answers to every wellness question ever asked. But do these supplements really work? The only way to determine that is to study the field, identify one that best meets the results you are trying to achieve, and then decide for yourself. Just be sure to consult a physician before starting a regime of any vitamin, mineral, or herbal supplement. In the meantime, here’s a look at three of the best-selling product types on the market and the areas of health they purport to enhance.