Even if you eat somewhat healthy most of the time and you're in no way a self-proclaimed junk food junkie, it's still not easy to reach all of your nutritional needs from food alone. "We are constantly exposed to chemicals and pollution that put stress on our body and can affect how it functions - which also includes how it processes nutrients," says Jeffrey A. Morrison, M.D., C.N.S., founder of the Morrison Center in New York City. "Secondly, there is research that shows that non-organic farming has attributed to the decrease in vitamins and minerals in the soil - it is not as high as it once was." Couple those out-of-your-control factors with a hectic lifestyle and poor food choices and you might not be getting the balanced nutrition your body needs to be totally kick-ass.