Growing in the mountains and wild fern is quite popular, and some places will be made into dried fern to the market.

But scientific research has found that ferns contain substances related to cancer such as phenyl oxalic acid, fern lactam, xanthohumol compounds, aconitin and some substances similar to aconitin. These carcinogens are highest in the fern's rhizomes and second highest in the leaves.

Japanese scholars found that in the high incidence of esophageal cancer in Japan, people who eat ferns frequently cause cancer. Our scholars found that long-term fern as feed cattle, the incidence of bladder cancer is also very high.

According to many countries in the world, fern cancer test shows that fern can make rats induce intestinal cancer, breast cancer, bladder cancer, leukemia and so on.

Scientists also cooked and processed fern cancer test showed that even after processing the fern, can also induce cancer.

So, experts suggest that it is better not to eat fern.