Kidney stone is one of the most common diseases these days. It is remarked as one of the most painful diseases. It is commonly believed that the patients of kidney stones should limit the intake of caffeine or coffee as it is thought to be rich in calcium oxidant that is considered bad in the kidney stones. The studies have proved that about 80% of all kidney stones are composed of calcium and other minerals, usually a combination of calcium and oxalate. In some cases dietary adjustments help to prevent the recurrence of these types of stones.

A study published September, 2004 in the journal Urology suggests people prone to kidney stones should limit their intake of caffeine and cut down on the amount of coffee. People who consumed caffeine in amounts equal to two cups of coffee showed elevated levels of calcium in their urine, which can increase the risk of developing stones, especially for people prone to stones. “Caffeine consumption may modestly increase risk of calcium oxalate stone formation," concluded the researchers. Common thought about the diet in kidney stones say to avoid sugar and salt, caffeine (that is at most found in coffee) and alcohol, all of which increase the amount of calcium in the urine.

Coffee consumption is on the rise in the United States and over half of Americans drink it everyday, according to the National Coffee Association. The latest researches in the health drinks have shown that coffee is a great antioxidant. It is stated to be number one antioxidants in the U.S diet according to the new study by researchers at the University of Scranton (Pa.). It is stated by the medium of the study that Americans get more antioxidants from coffee than any other dietary source as stated by leader Joe Vinson, Phd., a chemistry professor at the university.

Coffee has a complex chemical composition, however, and the potential importance of many other constituents, albeit present in small concentrations, cannot be ignored. A characteristic of many plants is that they contain a diverse array of compounds with antioxidant properties and coffee is no exception. Polyphenolic compounds called flavonoids are particularly widespread in plants and important in disease protection. Evidences have proved that coffee has high substances with antioxidant activities. The research in this field is really interesting and amazing but has certainly given the increasing interest in the beneficial role of food antioxidants in health. The coffee in this field is expected to gain popularity and interest.

It is amazing to that the benefits of the drink has been stated and thought to be beneficial in many diseases like cancer, type 2 diabetes, and even to kidney stones to a large extent. The coffee has been linked to an increasing number of potential health benefits, including protection of liver and colon cancer. Definitely more study and research is required to prove and particularly confirm its benefits on common diseases.