View Full Version : Black tea protects against radiation damage

03-26-2013, 12:00 AM
Surprising one this! Tea's role as an antioxidant is common knowledge but this is a very specific indication.

Studies on black tea (Camellia sinensis) extract as a potential antioxidant and a probable radioprotector.
Pal S, Saha C, Dey SK. Radiat Environ Biophys. 2013 Mar 22. [Epub ahead of print]

Positive health effects of tea (Camellia sinensis) on a wide range of physiological problems and diseases are well known and are in part due to its copious antioxidant content. The effect of black tea extract (BTE), which is rich in polyphenolic antioxidants, against the consequences of radiation exposure has not been properly identified. The functional properties of BTE were analyzed and its radioprotective effect on V79 cells was explored in the present study. BTE scavenged free radicals and inhibited Fenton reaction-mediated 2-deoxyribose degradation and lipid peroxidation in a dose-dependent fashion, establishing its antioxidant properties. The radioprotective effects of BTE on strand break induction in pBR322 plasmid DNA were 100 % at 80 μg/ml and higher. In V79 cells, BTE was effective in decreasing the frequency of radiation-induced micronucleated cells and the yields of reactive oxygen species (ROS) and also in restoring the integrity of cellular mitochondrial membrane potential significantly. BTE exerted maximum protection against radiation-induced damage in V79 at a dose of 5 μg/ml. Due to the functional properties of BTE-flavonoids, which have been identified by HPLC, it is envisaged that the key player in radioprotection is elimination of ROS.

08-12-2013, 02:40 PM
I love black tea so its nice to know it has some benefits, but on the other hand it makes anemia more intense in people with iron deficiency, that's why I' trying not to drink too much of it.