or sprays, are being sold in health stores, and supporters of the diet craze say it’s a “weight-loss miracle.” HCG is a hormone produced during pregnancy by the placenta. Dr. Laree Hooker, of Tempe, Ariz., said there is no evidence that HCG products effectively help people lose weight. “With the injectible HCG, all the literature shows that after the protocol, it basically recalibrates your metabolism for your body’s new set point for your weight, and that evidence is just not present for the homeopathic version,” Hooker said. Elizabeth Miller, who oversees the FDA’s Internet health-fraud team, said HCG products your finely oiled machine." The station's skipper, Russian Andrey Borisenko, wished the six shuttle astronauts a "soft landing." Endeavour will return to Florida in the pre-dawn hours of Wednesday, never to fly in space again. The shuttle will be retired to a museum in California following the 16-day mission, its 25th. On its final journey, Endeavour delivered a $2 billion cosmic ray detector that will remain on the space station for the next decade. The Alpha Magnetic Spectrometer already is collecting 25 million to 40 million cosmic particles a day worthy of analysis. It's searching for antimatter and dark matter, and scientists hope the findings will shed light on the origin of the universe. Kelly and his crew also provided the space station with a platform full of spare parts and an extension boom for future repair work. The boom, installed Friday on the fourth spacewalk of the mission, marked the completion of the U.S. portion of the space station. The astronauts also worked on some of the critical life-support systems inside, in an effort to leave the orbiting outpost in the best possible shape for the shuttle-less years ahead. Astronauts Mike Fincke and Gregory Chamitoff -- who spent months living on the space station in years past -- pretended they didn't want to leave Sunday morning. They were dragged into the shuttle by their crewmates. Garan joined in on the joke, waving goodbye as if he were heading out aboard Endeavour as well. He's just two months into his five-month station stay. All told, the hatches between the two spacecraft we