Peanuts and 'Black Tea' both possess trace amounts of Aflatoxin.
This is a nasty mycotoxin, and can cause MS.
Aspergillus flavus and Aspergillus parasiticus are the two molds (B1 & B2) that produce Aflatoxin. A. flavus is the most common, and is found in the soil and decaying matter.
Read how peanuts and 'black tea' are produced and you'll understand why.
However, there are Andean foodcrops that inhibit both types of Afalatoxin.