Mr. Li of tianjin agricultural university recently wrote that scientific experiments show that roe is in the belly of fish, surrounded by blood vessels, which is precisely the rich area of various residual pesticides and other toxic chemicals. The pesticide residue in roe is five to ten times higher than that in fish.

At present, the farming and aquaculture in most rural areas of China have entered the chemical age. Farmers have increased the yield per unit area and overused chemical fertilizers and pesticides. However, irrigation water, rainwater, river water and groundwater in farmland have brought pesticide residues in the soil into the river, and after being eaten by plankton in the water, they gradually accumulate in fish through the food chain, which is very toxic. Even the fish raised by some farmers have such problems.

Because when they raise fish, they generally don't test the water quality, but simply consider it from an economic point of view. As long as it is puddles, ponds, depressions and lakes, they will be stocked with water. Because some pesticides are slow in water solubility and fast in fat solubility, and roe is the rich area of fatty waste materials such as high cholesterol, there are many pesticides and various toxic substances.

And the lead content is very high, which has a great influence on brain intelligence, so there is an old saying that eating fish can't count, not without reason.