Eating shrimp heads means eating shrimp excrement, semi-digested shrimp food, and more importantly, shrimp heads will enrich heavy metals in the environment.

The heavy metal content varies depending on the size and part. The trend is that the heavy metal content of large-size samples is relatively high. The growth of heavy metal content in tilapia and white shrimp is positively correlated with their body weight; The heavy metal content in tilapia viscera is significantly higher than that in muscle tissue, and the shrimp head is the main part of shrimp where heavy metals are enriched.

But there is indeed a very delicious ingredient in shrimp heads, that is, shrimp eggs, commonly known as "yellow".

When female shrimps mature, they will contain shrimp yellow on the head and neck, so shrimps with shrimp yellow must be female shrimps, but without shrimp yellow, they are not necessarily male shrimps, and female shrimps cannot be seen when they are immature. Shrimp yellow. Most people are familiar with crab roe, but rarely know about shrimp roe. Before the female shrimp is pregnant with eggs, the shrimp head and neck contain shrimp roe, which is commonly known as "red-headed baby".

If you want to eat shrimp roe but don’t want to eat anything else, you have to eat it slowly. In fact, after removing the heavy metals, the excretion of it is very harmful to the human body.

Some places have the habit of eating shrimp head sauce. I checked the method and found that the whole shrimp head is indeed used.

The "shrimp head" we often refer to is the cephalothorax of the shrimp. The boundary between the head and the thorax of the shrimp is not obvious, and they are collectively called the cephalothorax. The cephalothorax has a structure called the pericardial sinus, which includes the stomach, liver, heart, excretory organ antennal glands (also called green glands because they are green), bladder and excretory pores.