No

Poisoning from eating black fungus can be an extremely rare event. The toxin that causes poisoning is a common biotoxin in mushrooms, which is present in many poisonous mushrooms, but the content of black fungus is very small, and will not have any effect on health. However, when the black fungus soaking environment is warm and moist enough, time is also long enough, this original content of biotoxins may be very small rapidly multiply to the "poisonous dose", or some of the fungus may be in the soaking process to produce denaturation, a large number of reproduction, at this time to ingest, then it is very likely to be poisoned.

Expanded information:

First of all, you can be sure that the black fungus is not toxic. In terms of nutrients, each 100 grams of dried product contains 10.6 grams of protein, 0.2 grams of fat, 65 grams of carbohydrates, 7 grams of crude fiber, 375 milligrams of calcium, 201 milligrams of phosphorus, 185 milligrams of iron, but also contains 0.15 milligrams of Vitamin B1, 0.55 milligrams of Vitamin B2, 2.7 milligrams of niacin.

Therefore, the black fungus is a very rich nutritional value of the fungus, and the taste is crisp and delicate, cooking methods are rich, traditionally favored by the majority of the people.

People's Daily News - Issue 176: eating black fungus will be poisoned? Tell you the truth