1. Areca nut: contains a lot of arecoline, which will make the nerves in a state of high excitement. Areca nut residue can also stimulate the stomach wall, causing gastric mucosal inflammation and gastric perforation. It will increase the probability of malignant diseases such as esophageal cancer, laryngeal cancer and oral cancer, which can lead to oral mucosal fibrosis.

2. Mushrooms: I believe everyone has eaten mushrooms, but not all mushrooms are edible. Even those mushrooms that are originally nontoxic may absorb toxins in the natural environment.

3. Pufferfish: Generally speaking, river bream refers to bony fish, fugiformes and various genera of pufferfish. [1] It is a precious high-grade aquatic product with delicious meat and rich nutrition, and is known as the "crown of vegetables". However, its ovaries, liver, kidneys, eyes and blood are all highly toxic, and it is not handled properly or eaten by mistake, and the light one is poisoned and the heavy one dies.