As you might expect from an herb like basil it has a pretty profound effect on the digestive system and therefore works great for treating things like indigestion, bloating, and gas. When you're using basil to treat these problems I'd recommend taking around 2-4 grams per day taken orally. Basil can also be used to ease the effects of insect bites and stings, simply crush the leaves so the juices can be applied to the affected area. To help from getting bit or stung in the first place you can rub the juice on the skin in the same manner, basil works rather well as an insecticide so this should help repel the bugs.
Other research conducted at the same institute studied possible regeneration of the islets of langerhans in rats that were made diabetic for the study and then given gymnema sylvestre leaf extracts. The diabetic rats were able to double the number of their islets and beta cell numbers. Researchers felt that the herbal therapy was able to bring blood sugar stability by repairing the pancreas and increasing insulin secretion.
When using Aloe you want to be sure not to apply it to any open wounds. Also be careful when processing the leaves. As I mentioned above you want to make use of the clear gel part, and steer clear of the yellow sap that oozes out. While not a big deal when applying to the skin one should be aware of this yellow sap when taking aloe gel orally. This yellow sap is called aloin and if ingested will act as a laxative, if aloin is used for prolonged periods it can lead to depletion of electrolytes and dependence for normal bowl function.
Another well know spice in the kitchen cinnamon is also known for it's medicinal properties. While not really an herb I still think it's important to list it in our list of herbs and their uses. Cinnamon actually comes from the inner bark of a tree in the laurel family. It's been used for centuries and was a hot commodity for trade in ancient times. In fact during the first century A.D. in Rome cinnamon was 15 times more expensive than silver. The Chinese were probably the first to use cinnamon as a medicinal herb and used it to treat fevers, and diarrhea. In more modern times cinnamon has been found to stabilize blood sugar levels in diabetics, as it has an insulin kind of effect.