"...Ashwagandha is used in Indian traditional medicine Ayurveda and is believed to have a variety of health promoting effects...We tried to characterize various activities of leaf extract of Ashwagandha raised in the field and in the laboratory. We found that the extract of Ashwagandha from field-raised plants has a significant anti-proliferative activity in human 'tumor] cells. However, it did not impart any protection against the oxidative damage cause by high glucose and hydrogen peroxide to human cancer cells suggesting that Aswagandha can be used as an anti-tumor, but not as an anti-oxidant, substance." Emphasis added.

From: Food Chem. Toxicology, vol. 42, 2004. By: Drs. Kaur, Rani Wadhwa, et al., Cell Proliferation Res. Team, Gene Function Res. Ctr., Nat. Inst. Advanced Industrial Science & Technology, 1-1-1 Higashi, Ibaraki 305-8562, Japan.