Eating fish twice a week can increase your risk of skin cancer. This is confirmed by a study that comes from United States. Brown University researchers found that people whose typical daily intake of fish was 42.8 grams (about 300 grams per week) had a 22 percent higher risk of malignant melanoma, compared to those who took only 3.2. grams.
The study also found that those who ate the most fish were 28 percent more likely to develop abnormal cells only in the outer layer of the skin, known as stage 0 melanoma or melanoma in situ and is also referred to as pre-cancer.
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The American Skin Cancer Study
The research involved 491,367 adults in the United States, aged around 62, who reported how often they ate fish in the previous year. The researchers then calculated the percentage of melanoma cases that developed over a 15-year period.
They also took into consideration other factors that could influence the results, such as weight, relationship with smoking and alcohol, as well as the presence of relatives who have had cancer. 1% of people developed malignant melanoma while 0.7% developed stage 0 melanoma.
Dr Michael Jones, senior staff scientist in genetics and epidemiology at the Institute of Cancer Research, said it is important to remember that eating two servings of fish a week can be a way to include important nutrients, such as omega fatty acids. -3 and this study should not discourage people from including fish as part of a healthy diet. ‘