Does eating a lot of fish increase the risk of skin cancer? – VnExpress

Skin cancer risk may be related to biological pollutants in fish such as arsenic and mercury, rather than the fish itself, according to new studies.

According to the American Academy of Dermatology (ADD), melanoma develops in skin cells. Most skin cancer deaths are due to melanoma.

Research published in June 2022 in the journal Cancer Causes & Control found that eating a lot of fish, such as tuna and non-fried fish, can lead to an increased risk of tumor development. higher malignancy. The study followed more than 490,000 Americans with an average age of 62 and 90% white.

Participants reported how often they ate fried, non-fried fish and tuna in their diets. The results showed that more than 5,000 people developed melanoma, more than 3,200 people developed stage 0 melanoma (tumor in situ). The study looked at factors that could affect the results such as body mass index, physical activity, smoking history, family history of cancer, alcohol intake, caffeine, calories, and UV rays. purple in the living area.

The experts also tracked fish consumption in each type and the corresponding cancer risk. Compared with low fish consumers, those who ate 14.2 grams of tuna and 17.8 grams of non-fried fish per day had a 20%, 18% higher risk of melanoma, and an 18% higher risk of melanoma, respectively. Stage 0 cancers are more than 17% and more than 25%. In the case of people eating fried fish, the results obtained are not significant.

There is a relationship between eating fish and developing skin cancer, said Eunyoung Cho, Associate Professor of Dermatology and Epidemiology at Brown University and the study’s author. Biological pollutants such as mercury and arsenic contaminated with fish can be the cause of cancer.

Contaminants in fish such as arsenic, mercury found in fish have been linked to cancer. Image: Freepik

Another study by Associate Professor Eunyoung Cho’s group of 29,000 adults looked for a link between mercury and non-melanoma skin cancer. People with high levels of mercury in their blood were 79% more likely to develop non-melanoma skin cancer than people with low levels. Although this study does not show fish or contaminants increase the risk, there is evidence that exposure to toxins may be involved.

Jeffrey Weber, a doctor at NYU Langone Health (USA) said that this increase in risk is quite low, about 20%. Therefore, people should not remove fish from the daily menu to avoid the risk of disease.

How to limit sun exposure

The authors and experts do not see these findings as a reason to avoid eating fish. The main way to reduce the risk of skin cancer is to limit sun exposure, and here are some suggestions.

Avoid going out in hot weather: About 95% of melanoma cases are caused by exposure to ultraviolet (UV) rays from the sun. Therefore, people should limit going out during peak hours from 10am to 4pm.

Sunscreen: helps protect the skin, however, some UV rays still penetrate. Even a sunscreen with a high SPF (sun protection factor) doesn’t mean you can stay safe in the sun for longer. You can find sunscreens with good protection, blocking UVA and UVB.

You can apply just enough cream to cover your arms, legs, neck and face. Reapply every two hours or more often if you go swimming or sweat a lot. Apply sunscreen 30 minutes before UV exposure to help it penetrate the skin.

Apply sunscreen properly to protect your body from UV rays.  Photo: Freepik

Apply sunscreen properly to protect your body from UV rays. Image: Freepik

Do regular skin self-exams: Annual skin exams with your doctor and regular skin self-exams can help prevent melanoma in its early stages. According to the sheet Everyday Health, If detected early, melanoma can be more than 98% curable. A thorough examination of the stomach using a full-body mirror and a small hand-held mirror helps you see hard-to-see areas.

Huynh Long
(Follow Everyday Health)


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