During eight years of follow-up, 1320 cases of prostate cancer were diagnosed in men in the study.The results do not support the use of lycopene, beta-carotene, carotenoids and other researchers write. Focus on food, not pills
The men also completed questionnaires assessing their health, diet and lifestyle in general.
The new study, led by Peters, is one of the most important and rigorously designed not to address the problem. And the results were unequivocal lycopene.
McCullough said the message of these studies and this is that until more is known, individual carotenoids should not be taken in high doses as a supplement.
Dr. Dr. Aylor is the director of geriatric medicine and director of Alzheimer?s dementia of the Center for Geriatric Medicine at Scott & White Hospital in Temple.
?Nutrients simple does not always give you an overview,? she said. ?We have seen that some years ago in studies of beta-carotene.?
There was no significant difference in blood levels of lycopene in men who developed prostate cancer during follow-up and those without.
What can you say about the influence of diet and lifestyle on the risk of prostate cancer? Not much, says Peters.
However, beta-carotene is associated with an increased risk of aggressive prostate cancer.
As nutrients such as beta-carotene makes carrots orange, lycopene is responsible for the bright red tomatoes. Both compounds are among the pigments synthesized by plants and are known as carotenoids.
The news could prevent the tomato seemed too good to be true, and apparently it was.
?It would be nice if it were true. [Eating tomatoes and tomato products] would be cheaper and easier to reduce the risk of prostate cancer and would be a great public health message,? said Peters. ?Unfortunately, it is not so easy.? Colorful nutrients
?I recommend that people try to get their carotenoids and other nutrients in the foods we eat,? he said. ?This way they get the nutrients in its natural form with other nutrients in these foods.?
But subsequent studies have been contradictory or inconclusive, Fred Hutchinson assistant professor and researcher Ulrike Peters, PhD, MPH, tells WebMD.
The researchers thought intake of beta-carotene could prevent lung cancer in smokers, but in the end find more cancers in smokers who took antioxidant supplements.
There is growing evidence that obesity increases the risk of a man for the disease and suggested that a healthy diet may be protective. But neither association has been demonstrated.
Lycopene, found primarily in tomatoes and tomato products, has had little impact on the risk of a new study conducted by the National Cancer Institute in Seattle and Fred Hutchinson Cancer Research Center.
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