if you're over 50, you are spending your time on the Web looking at scantily-clad women, reading about colon, bladder, and prostate issues, trying to control your soaring cholesterol, clear your clogged arteries - and maybe even considering eating a more healthy diet and starting an exercise regimen. In that case you might want to keep on reading.

Scientific findings have linked green tea consumption to the slowing or prevention of cancer (specifically cancer of the bladder, colon, esophageal, stomach, and pancreas), heart disease, rheumatoid arthritis, impaired immune disease, and liver disease. Health benefits of green tea even have been proven to aid tooth decay and dieting.

A nutrient is a substance used in an organism's metabolism which must be taken in from the environment. Non-autotrophic organisms typically acquire nutrients by the ingestion of foods. Methods for nutrient intake vary, with animals and protists having an internal digestive system, while plants digest nutrients externally and then ingested.Organic nutrients include carbohydrates, fats, proteins (or their building blocks, amino acids), and vitamins. Inorganic chemical compounds such as minerals; water and oxygen may also be considered nutrients. A nutrient is essential to an organism if it cannot be synthesized by the organism in sufficient quantities and must be obtained from an external source. Nutrients needed in relatively large quantities are called macronutrients and those needed in relatively small quantities are called micronutrients.See healthy diet for information on the role of nutrients in human nutrition.