According to a new study led by Dr. Gary Stoner, black raspberries may be effective against preventing the development of esophageal tumors. Stoner and his team found that black raspberry powder, when fed to tumor-induced rats, inhibited cancerous cell production in the esophagus, oral cavity and colon. The powder also had the ability to prevent the conversion of precancerous cells to cancerous ones.
According to Dr. Stoner, preliminary results in humans suggest that black raspberries can prevent pre-cancerous lesions in the mouth, esophagus and colon from turning into cancerous lesions.
However, there has been no benefit seen once a cancerous tumor is already developed.
