What happens when you eat shrimp that grows in sewage?

The harm to aquatic sewage is mainly heavy metal ions (copper, nickel, chromium, lead, mercury ...).

If fish and shrimp are raised with sewage containing heavy metals, a lot of heavy metals (especially viscera and brain) must have accumulated in their bodies. The state has very strict requirements for aquaculture water. It should be better if it is a well-run large farm enterprise, but it is not necessarily if it is private, especially where the non-ferrous metal industry is developed and the electroplating industry is developed.

Seafood is best kept away from the estuaries of rivers, lakes and seas. At present, many inland rivers that don't make drinking water in China have been polluted, so it's best not to eat offshore.

The pollutants in water are mainly aquatic products polluted by heavy metal ions. When you ingest heavy metals in your body, they will accompany you for life, and you can't excrete them through your own metabolism, especially lead and mercury, which is very harmful to the central nervous system. Complications of chronic heavy metal poisoning are difficult to cure (can be said to be incurable), ranging from amnesia, insanity and neuralgia to cancer and deformity.

The state has strict requirements for heavy metals, but unscrupulous local governments are lax in law enforcement (many well-known enterprises that fail to meet the standards are engaged in environmental protection, not to mention other small enterprises), and even things like Hunan people not eating Hunan rice and Langfang people not eating local dishes frequently appear. Heavy metals are colorless and tasteless, and it is impossible to find them without high-tech instruments and monitoring methods. People who raise fish and grow vegetables don't know that they use these "poisonous water" in a muddle, and the safety of agricultural products is a joke.

It is suggested not to eat fish, shrimp and vegetables from one place, but to change places frequently, otherwise strange miscellaneous diseases may appear after many years.