eating too much fish increases the risk of melanoma

eating too much fish increases the risk of melanoma


Can Eating Fish Impact Your Skin Cancer Risk? Yes, according to researchers at Brown University in the United States. According to their latest study published in the journal Cancer Causes & Control on June 9, regular consumption of fish increased the risk of melanoma. The study shows that there is a link between fish consumption and the development of skin cancer. Eating large amounts of fish, including tuna and uncooked fish, is associated with a higher risk of malignant melanoma. Researchers at Brown University found that the risk of malignant melanoma was 22% higher in people with a median daily intake of fish of 42.8 grams, compared with those with a daily intake of 3. 2 grams.

Fish: how much does it endanger you?

They also observed that people whose median daily fish consumption was 42.8 grams had a 28% increased risk of developing abnormal cells in the outer layer of the skin only (stage 0 melanoma or in situ melanoma) compared to people with a median daily intake of 3.2 grams of fish. Note that one serving of fish is about 140 grams of cooked fish. In practice, to examine the relationship between fish consumption and melanoma risk, the authors analyzed data from 491,367 adults recruited across the United States as part of the NIH-AARP Diet and Health study. Study between 1995 and 1996.

Participants, who were on average 62 years old, reported how often they had eaten fried fish, uncooked fish and tuna in the previous year, and the size of their portions. The researchers therefore calculated the incidence of new melanomas that developed over a median period of 15 years using data from cancer registries. They took into account sociodemographic factors as well as participants’ BMI, physical activity level, history of smoking, daily alcohol, caffeine, and calorie intake, family history of cancer, and levels of means of UV radiation in their region. As a result, 5,034 participants (1.0%) developed malignant melanoma during the study period and 3,284 (0.7%) developed stage 0 melanoma.

Skin cancer: 20% higher risk of malignant melanoma

The researchers found that higher consumption of uncooked fish and tuna was associated with an increased risk of malignant melanoma and stage 0 melanoma. People with a median daily consumption of 14.2 grams of tuna 20% higher risk of malignant melanoma and 17% higher risk of stage 0 melanoma compared to those with a median daily consumption of tuna of 0.3 grams. A median consumption of 17.8 grams of uncooked fish per day was associated with an 18% increase in the risk of malignant melanoma and a 25% increase in the risk of stage 0 melanoma, compared with a median consumption of 0.3 grams. of uncooked fish a day. Researchers have not identified a significant association between the consumption of fried fish and the risk of malignant melanoma or stage 0 melanoma.

Eunyoung Cho, lead author of the study, suggests that biocontaminants in fish may be linked to this increased risk of skin cancer. “We speculate that our results could possibly be attributed to contaminants in fish, such as polychlorinated biphenyls, dioxins, arsenic and mercury. Previous research has shown that high fish consumption is associated with high levels of fish. of these contaminants in the body and identified associations between these contaminants and a higher risk of skin cancer, however, we note that our study did not examine the concentrations of these contaminants in the that further research is therefore needed to confirm this relationship, “he said.

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