Green Tea Has Potential to Help Prevent and Treat Osteoporosis

Researchers are reporting new evidence that green tea could help improve bone health. They found that the tea contains a group of chemicals that can stimulate bone formation and help slow its breakdown. The beverage has the potential to help in the prevention and treatment of osteoporosis and other bone diseases that affect millions worldwide, the researchers suggest.

In the study, the researchers note that many scientific studies have linked tea to beneficial effects in preventing cancer, heart disease, and other conditions. Recent studies in humans and cell cultures suggest that tea may also benefit bone health. But few scientific studies have explored the exact chemicals in tea that might be responsible for this effect.

The scientists exposed a group of cultured bone-forming cells (osteoblasts) to three major green tea components: epigallocatechin (EGC), gallocatechin (GC), and gallocatechin gallate (GCG) for several days. They found that one in particular, EGC, boosted the activity of a key enzyme that promotes bone growth by up to 79 percent. EGC also significantly boosted levels of bone mineralization in the cells, which strengthens bones. The scientists also showed that high concentrations of ECG blocked the activity of a type of cell (osteoclast) that breaks down or weakens bones. The green tea components did not cause any toxic effects to the bone cells.
References:
1. Ping Chung Leung, et al. Effects of Tea Catechins, Epigallocatechin, Gallocatechin, and Gallocatechin Gallate, on Bone Metabolism. American Chemical Society. ACS News Service Weekly PressPac: September 16, 2009.

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