Royal jelly might also have a very important role to play in the improvement of blood sugar levels in the body. It also assists in regulating insulin sensitivity with the help of reduced oxidative stress as well as inflammation in the body. Several animal studies have actually shown that the diabetic rats that are treated with some royal jelly tend to have an increased sensitivity to insulin. Apparently, it also has a protective effect on the liver, reproductive, and pancreatic tissue. Another study done on humans over a period of six months showed a 20% decrease in the levels of fasting blood sugar in people who had a daily dose of royal jelly. However, since there is not enough significant research done on the products, the knowledge is limited.