It can supplement calcium. Shrimp skin does contain a lot of calcium, but the absorption rate is not ideal. In order to absorb calcium, it must be dissolved first, but shrimp shells can not be completely chewed by human teeth, and only a small part can be dissolved after being acted on by gastric acid in the stomach. Most of the calcium will be excreted as undigested residue. Shrimp skin also contains no vitamin D, so the utilization rate of calcium cannot be fully guaranteed.

But if it is finely divided, the calcium supplement effect will be better.

Shrimp skin is mainly hairy shrimp, which has high nutritional value. Every 100g shrimp skin contains 39.3g protein, which is much higher than aquatic products such as Pseudosciaena crocea, yellow croaker, prawn, hairtail and pomfret, and meat products such as beef, pork and chicken.

Shrimp skin is known as the "calcium bank", which is rich in minerals and has a wide variety. Besides iodine, it is also rich in iron, calcium and phosphorus. The contents of calcium and phosphorus in shrimp skin per100g were 99 1 mg and 582 mg respectively.

References:

Baidu encyclopedia entry? Dried shrimp