On average, a crab of 3-4 Liang has an edible part of about 60-80 grams and a calorie of about 70-80 kilocalories, which is equivalent to a small apple (about 150 grams).
The general population can eat crabs. It is suitable for traumatic injury, broken tendons and bones, swelling and pain due to blood stasis, puerperal placenta residue, weak pregnant women in labor, and retained afterbirth, especially for crab claws.
However, people with spleen and stomach deficiency and cold, loose stool, abdominal pain and dull pain, wind-cold and cold, wind disease and intractable skin itching are not suitable for eating; Women with menorrhagia, dysmenorrhea and pregnancy should not eat, especially crab claws.
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