Indium exists in such small amounts, and is not water-soluble in nature, that it is simply not in the food chain. It is for this reason that it is designated a trace mineral (micro-mineral). Testing done in 1975 was unable to determine indium levels in the body due to its low concentration. All this points to indium being vital for our continued good health, and a solution to some of mankind's most dreaded health problems. One of many health problems that research has shown that indium may help is cancer. It has shown to be effective against Walker 256 carcinosarcomas, and more research for its further use is ongoing. In 1983 study found that indium sought out and saturated tumor tissue. This is good news given the general tumor reducing characteristics of indium. In 1971 study found that indium supplementation caused a lower incidence of tumors. In 1971, Dr Henry Schroeder found that the use of indium resulted in a lower body weight. Of even more interest is the fact that indium was more active in females than males. Since women have less muscle mass than men, indium may give them the extra boost they need to lose weight. Dr Schroeder graphed very interesting results. He found that, after maturity, females without indium added 20% of their weight on as fat, while those supplementing with indium added on no fat at all. Indium has a beneficial effect on the thyroid gland. By potentiating this gland, and helping support proper thyroid levels, more calories and burned and weight is normalized. Indium users have known of it's anti-depressant activity for over two decades now, with indium producing a feeling of well-being and euphoria after only a few days of use. Two major effects that indium has are in its ability to help the body assimilate other important nutrients and in increasing the life span or red blood cells from 90 to 120 days.