Beta-carotene in cancer trial. The study helps provide a possible explanation for the results of a trial conducted in the early '90s in Finland, in which subjects at high risk for lung cancer—heavy smokers and asbestos workers—were given massive doses of beta-carotene as a cancer prophylactic.

Another study showed that 44 per cent of people with colon cancer who were given 30 mg daily supplements had cancer inhibition after just two weeks.
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list food sources of. Studies have connected plums to cancer prevention especially of breast, Apricots are a great source of beta-carotene, vitamin A & C, potassium · Naturmedicin. The book begins with a discussion of major research that has contributed to the in healthy aging and against a host of illnesses and disorders, including cancer, known in the Western world and a rich source of lycopene and beta-carotene.

Lung cancers were identified through linkage with the Finnish Cancer Registry, and hospital-treated tuberculosis cases were ascertained from the National Hospital Discharge Register. 2018-06-08 Among the subjects who received beta carotene, the relative risk of death from any cause was 1.08 in the ATBC Cancer Prevention Study (3570 deaths), 1.01 in the Physicians' Health Study (1947 Although the dosages of beta‐carotene in the sample of multivitamins in the current study appear to be substantially lower than those used in the chemoprevention study, one cannot rule out a linear dose‐risk correlation. 3, 4, 10, 11 In a large prospective study among French women, the incidence of lung cancer increased as beta‐carotene intake increased, and a modest dosage of beta Beta-carotene levels were almost 50 per cent higher in women without cancer than in the ones who developed breast cancer.
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One study of 29,000 male smokers found an 18% increase in lung cancer in the group receiving 20 mg of beta-carotene a day for 5 to 8 years. Another study of 18,000 people found 28% more lung cancers in people with a history of smoking and/or asbestos exposure.

N.p., n.d. Web. May 31, 2016 In regard to cancers, some studies suggested that higher intake of dietary beta- carotene could reduce lung and colorectal cancer risk.

Background: Epidemiologic evidence indicates that diets high in carotenoid-rich fruits and vegetables, as well as high serum levels of vitamin E (alpha-tocopherol) and beta carotene, are associated with a reduced risk of lung cancer. Methods: We performed a randomized, double-blind, placebo-controlled primary-prevention trial to determine whether daily supplementation with alpha-tocopherol, beta carotene, or both would reduce the incidence of lung cancer and other cancers.

J Natl Cancer Inst, 1996. 88(21): p. 1550-.

A case—control study Beta-carotene in cancer trial. The study helps provide a possible explanation for the results of a trial conducted in the early '90s in Finland, in which subjects at high risk for lung cancer—heavy smokers and asbestos workers—were given massive doses of beta-carotene as a cancer prophylactic. (Alpha-Tocopherol, Beta-Carotene Cancer Prevention trial [ATBC]) 29,133 male smokers* aged 50–69 y, Finland Beta-carotene administered as 20 mg daily or vitamin E administered as 50 mg daily 6.1 Increased (P 5.04) Hennekens, 199610 (Physician’s Health Study) 22,071 male physicians aged 40–84 y, U.S. Beta-carotene administered as 50 mg on The Alpha-Tocopherol, Beta Carotene Cancer Prevention Study Group. The effect of vitamin E and beta carotene on the incidence of lung cancer and other cancers in male smokers. N Engl J Med 1994;330:1029-35. View abstract.