This January there is very likely going to be a brand new, one shot, once a week weight loss injection. The injection is already on the market in Europe, and it is most probably going to be approved in the US this January. The injection is metabolized to GLP1, one of the 4 main hormones that controls body weight. Insulin, Ghrelin and Leptin are the other 3 weight control hormones. GLP1 inhibits fat storage and blocks hunger. The new one shot, once a week will very likely be revolutionary for weight loss. GLP1 injections are currently in use, but they are daily injections. Victoza (the shot I use at my office for daily free injections for weight loss patients) is a once a day injections of 93% pure GLP1. Byetta, the other injection I use at the office, is a twice a day injection of an analog that is metabolized in the body to GLP1. The third GLP1 injection currently available is Symlin, also a twice a day injection. The more GLP1 on board, the less fat storage, and the less hungry you are.