Cooked tomatoes and other tomato-based foods are rich in a number of
nutrients including an antioxidant called lycopene.
Other foods with a red pigment such as watermelon, guava and pink or
red grapefruit are also a source of lycopene.
In men diagnosed with prostate cancer studies suggest that a diet rich
in tomatoes or a lycopene supplement (up to 30 mg) may be beneficial in
lowering PSA and thus potentially slowing the progression of prostate cancer
(Ansari MS and Gupta NP, 2003, Schroder et al, 2005, Kranse et al, 2005).