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More Evidence That Green Tea Helps Improve Bone Health - Health New.
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More Evidence That Green Tea Helps Improve Bone Health
Posted on: Wednesday, 16 September 2009, 10:30 CDT Researchers in Hong Kong are reporting new evidence that green tea — one of the most popular beverages consumed worldwide andnow available as a dietary supplement — may help improve bone health. They found that the tea contains a group of chemicals thatcan stimulate bone formation and help slow its breakdown. Their findings are in ACS' Journal of Agricultural and Food Chemistry, abi-weekly publication. The beverage has the potential to help in the prevention and treatment of osteoporosis and other bone diseasesthat affect million worldwide, the researchers suggest.
In the new study, Ping Chung Leung and colleagues note that many scientific studies have linked tea to beneficial effects in preventingcancer, 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 enzymethat promotes bone growth by up to 79 percent. EGC also significantlyboosted levels of bone mineralization in the cells, which strengthens bones.
The scientists also showed that high concentrations of ECG blocked theactivity 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,they note.
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More Evidence That Green Tea Helps Improve Bone Health - Health New.
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