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In terms of cancer prevention, a 2019 study found that participants with the highest intake of lutein and zeaxanthin had the lowest risk of colorectal cancer. Vitamin A Salmon is rich in vitamin A ...
Antioxidants are helpful in reducing and preventing damage from free radical reactions because of their ability to donate electrons which neutralize the radical without forming another. Vitamin C, for example, can lose an electron to a free radical and remain stable itself by passing its unstable electron around the antioxidant molecule.
The cancer treatment drug topotecan is a synthetic chemical compound similar in chemical structure to camptothecin which is found in extracts of Camptotheca (happy tree). [7] Catharanthus roseus. Vinca alkaloids were originally manufactured by extracting them from Catharanthus roseus (Madagascar Periwinkle). [1] Podophyllum spp.
For cancer patients, the therapy is predicated on the idea that the redox state of cells may have an effect on cancer development. [ 4 ] Historically, and in alternative medicine , the term "redox therapy" has also been used to describe the practice of administering high dosages of vitamins; in a 1984 study, high dosages of Menadione and ...
Higher intakes of soy isoflavones may be associated with reduced risks of breast cancer in postmenopausal women and prostate cancer in men. [ 2 ] A 2019 systematic review found that intake of soy and soy isoflavones is associated with a lower risk of mortality from gastric, colorectal, breast and lung cancers. [ 74 ]
The main source of polyphenols is dietary, since they are found in a wide array of phytochemical-bearing foods.For example, honey; most legumes; fruits such as apples, blackberries, blueberries, cantaloupe, pomegranate, cherries, cranberries, grapes, pears, plums, raspberries, aronia berries, and strawberries (berries in general have high polyphenol content [5]) and vegetables such as broccoli ...
A large clinical trial with male tobacco smokers and reported a 32% decrease in the incidence of prostate cancer, [77] but the SELECT trial of selenium or vitamin E for prostate cancer enrolled men ages 55 or older and reported relative risk 17% higher for the vitamin group. [78]
The enzymatic components may directly scavenge active oxygen species or may act by producing the nonenzymatic antioxidants. There are four enzymes that provide the bulk of protection against deleterious reactions involving active oxygen in bacteria: SODs (superoxide dismutases encoded by sodA and sodB ), catalases ( katE and katG ), glutathione ...