Keeping healthy with kitchen herbs means thinking of ways to use your kitchen spice shelf as a medicinal resource. If you do little cooking, or if your spices are more than a year old, you'll need to get a fresh supply. Good quality spices make for tastier foods as well as more effective medicine. (Please note: if you have a serious medical condition, please consult a medical practitioner.) Sometimes the simplest of kitchen spices that we take for granted are among the most useful medicinally. Of the following four herbs, three of them contain very strong essential oils that can really aid in fighting off illness. Parsley, while not as strong as its other companions, nonetheless is a very useful herb. Parsley, Petroselinum crispum, a member of the Umbelliferae family, acts as a diuretic, expectorant, emmenogogue, carminative and, according to some, may even be an aprodisiac. (So in a restaurant, eat parsley, rather than throwing it out.) Medicinally, parsley has several uses. Firs...