Interactive running calorie calculator - this java applet computes calories expended based on the runner's body weight and distance covered (Note; you will need a java capable browser to view this nifty application).
Iron deficiency -- learn about this important element, and who might be at risk for deficiency.
Calcium. bones, and stress fractures -- Most adults, especially women, do not get the calcium they need. Some experts have identified calcium deficiency as the most common nutritional problem in the United States.
Androstenedione - sales of this popular supplement have soared. Although it is a weaker steroid than testosterone, a steroid by any other name is still a steroid.
Erythropoetin - this protein hormone, taken by injection, is very popular among certain endurance athletes. The 1998 Tour de France was an embarrasing reminder of the magnitude of the problem of drug "cheating" in modern sports.