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A recent report published in the journal Cancer Causes and Control warns that high intakes of fish other than tuna and fried foods increase the likelihood of malignant melanoma and state 0 melanoma.
The author, Eunyoung Cho, an associate professor of dermatology and epidemiology at Brown University, said:
“Although fish intake has increased in the United States and Europe in recent decades, the results of previous studies investigating the association between fish intake and risk of melanoma are inconsistent. Our findings. Has identified an association that requires further investigation. “
Researchers at Brown University found that the median daily fish intake was 3.2 grams (0.11 ounces), while the median daily fish intake was 42.8 grams (1.5 ounces) for malignant melanoma. We found a 22% higher risk and a 28% higher risk of developing the stage. 0 In cancer, also known as melanoma in situ, abnormal cells are found only in the outer layer of the skin, the study said ..
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According to the American Cancer Society, melanoma is the fifth most common cancer in the United States, with a lifetime risk of 2.6% for whites, 0.1% for blacks, and 0.6% for Hispanics.
“One serving of cooked fish weighs about 140-170 grams (5-6 ounces). A can of tuna weighs 142 grams (5 ounces),” the release said.
The study enrolled 491,367 adults from across the United States in the National Cancer Center’s NIH-AARP diet and health study between 1995 and 1996, with an average age of 62 years.
In this study, we analyzed the size of potions and how often participants ate three types of fish: 1) fried fish, 2) non-fried fish, and 3) tuna from the previous year.
Researchers used cancer registries to track the incidence of new melanoma with a median 15-year period, including sociodemographic factors, smoking history, cancer family history, daily alcohol intake, daily, etc. , Considered other factors that may affect the results. Caffeine and calorie intake per release, and the average UV level in each participant’s region.
With each release, 5,034 participants (1%) developed malignant melanoma and 3,284 (0.7%) developed stage 0 melanoma.
Although this study did not show a significant association between eating fried fish and the risk of malignant melanoma or stage 0 melanoma, researchers found that high intakes of non-fried fish and tuna. We found that the higher the risk of malignant melanoma and stage 0 melanoma.
However, the authors state that the analysis has some limitations, such as not taking into account specific risk factors for melanoma, such as mole number, hair color, and history of sun-related behaviors. ..
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Another limitation was that the study may not fully represent the participant’s lifetime diet, as the average daily fish intake of the participants was calculated only at the beginning of the study.
Also, because this is an observational study, it was not possible to conclude a causal link between fish intake and the risk of melanoma.
“Our findings speculate that it may be due to fish pollutants such as polychlorinated biphenyls, dioxins, arsenic and mercury,” Cho said.
“Previous studies have shown that high fish intake increases levels of these pollutants in the body, and has identified an association between these pollutants and the increased risk of skin cancer. , Our study does not investigate the levels of these contaminants. Because they are in the participants’ bodies, further research is needed to confirm this relationship. “
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Researchers do not recommend changing fish consumption, but to determine if certain components of fish, especially contaminants such as mercury, contribute to the association between fish consumption and risk of melanoma. , Suggests that further research is needed.