Xinhua News Agency, Tokyo, November 28 (Reporter Huayi) A recent study by Japanese scientists found that if pregnant women consume more fish and shellfish, such as tuna and swordfish, which contain more methylmercury, they will increase their children’s motor function and intelligence. Developmental risk.

According to Japan’s “Daily News” on the 28th, if mercury is dispersed into the environment, it can form toxic substances such as methylmercury, and it can easily accumulate in fish at the top of the food chain such as tuna. In general, low-level stocks have little impact on the health of consumers, but the study found for the first time in a Japanese survey that low levels of mercury contamination may have an effect on fetal development.

A team from Tohoku University in Japan conducted a long-term survey of approximately 800 pairs of mothers and daughters on the Pacific coast of northeastern Japan since 2002 to determine the concentration of methylmercury in hair during maternal production and to investigate the children's age at one and a half years and three and a half years. Sport function and intellectual development.

The World Health Organization has determined that the minimum concentration of methyl mercury that can cause neurological diseases such as mink disease is 50 ppm. The study found that the concentration of methyl mercury in the hair of the mother was low at 1 ppm and high at more than 10 ppm. If the concentration of methyl mercury in the mother’s hair is high, her child’s motor development index score at the age of one and a half years is about 5% lower than that of the mother born with the lower concentration of methyl mercury in the hair; The boy’s intelligence level is about 10% worse.

In Japan, pregnant women take up to 80 grams of Pacific bluefin tuna per week. The survey found that about 20% of people eat more than this value. Researchers believe that fish is an important source of nutrition for pregnant women, but they should avoid eating tuna at the top of the food chain and choose other fish such as Pacific saury.

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