A study in the novel reveals a striking link between fish and skin cancer

Eating fish has long been considered healthy, but new research is causing people to reconsider this long-held belief. Studies have shown that eating more fish may be associated with a higher risk of skin cancer, according to a media release released on Thursday.

An association that requires further investigation

“Melanoma is the fifth most common cancer in the United States, and the lifetime risk of melanoma is one in 38 for whites, one in 1,000 for blacks, and one in 167 for Spaniards. did not want to.

Researchers at Brown University and the National Cancer Institute tracked the eating habits of 491, 367 elderly Americans aged 50-71 over the age of 15 and estimated how many of them developed melanoma, an aggressive form of skin cancer in response to excessive fish consumption. Studies show that participants who eat about two servings of fish a week are 22 percent more likely to develop melanoma and 28 percent more likely to develop abnormal skin cells, which are precursors of cancer. less than half a portion.

Pollutants in fish

“Our findings suggest that polychlorinated biphenyls, dioxins, arsenic and mercury may be linked to contaminants in fish. Previous studies have found that high fish intake is associated with high levels of these pollutants and associated associations. However, we note that our study did not study the concentration of these pollutants in the participants’ bodies, so additional studies are needed to confirm this link, ”added Cho.

Researchers warn that the study did not take into account some risk factors for melanoma, such as the number of moles, hair color, history of severe sunburn, and sun-related behaviors. In addition, participants ’daily fishes were calculated at the beginning of the study and may change over 15 years as the subjects were observed and evaluated.

All of these elements can lead to inaccurate or inaccurate results, so the researchers noted that they do not exist. At the moment fish suggest any changes in consumption and the sun remains the main cause of skin cancer. However, this work is the first step to understanding the link between fish consumption and skin cancer, and further research may be indisputable.

The results of the study were published in the journal Cancer causes and control.

Previous epidemiological studies evaluating the link between fish consumption and the risk of melanoma have been few and contradictory. Several studies have differentiated between different types of fishing with the risk of melanoma. We examined the relationship between total fish and specific types of fish and the risk of melanoma in 491,367 participants in the NIH-AARP diet and health study. We used a multi-variable regulated Cox proportional risk regression to estimate risk factors (HRs) and 95% confidence intervals (CIs). The study, which averaged 15.5 years over 6,611,941 human years, identified 5,034 cases of malignant melanoma and 3,284 in situ melanoma. There is a positive correlation between malignant melanoma (HR = 1.22, 95% CI = 1.11-1.34 for upper and lower quintiles, ptrend = 0.001) and melanoma in situ (HR = 1.28, CI = 1.13) with high total fish volume. –1.44 for the upper and lower quintiles, ptrend = 0.002). Positive associations were consistent across several demographics and lifestyles. There are positive links between eating tuna and non-fried fish and the risk of malignant melanoma in situ. However, obtaining fried fish was inversely related to the risk of malignant melanoma, but not melanoma in situ. We found that total fish intake, tuna, and non-fried fish intake were positively correlated with the risk of malignant melanoma and melanoma in situ. Future research is needed to study the potential biological mechanisms underlying these associations.


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