Anything moldy should not be eaten, some people see only the surface of the food is moldy, think cut off or cut off the moldy parts, can be eaten, in fact, mold "toxin" has penetrated into the food inside, moldy food is carcinogenic.
The molds in moldy food can produce toxins, and these mycotoxins, such as aflatoxin and ochratoxin, have a strong carcinogenic effect. And, different mycotoxins have different toxic effects, some can cause damage to the liver and kidneys, some can cause neurological symptoms, and some can cause skin inflammation.
Shiitake mushrooms are fungi with a lot of benefits, but once they are moldy, eating too many of them can be toxic.
Shouldn't eat mushrooms when they turn white.