Peanuts contain mycotoxins similar to mold. Some people are allergic to these chemical compounds. Others aren't.
Foods that are grown underground (potatoes, carrots, peanuts, radishes, etc) absorb more pesticides, herbicides, and chemicals from industrial farming methods than above ground crops. Above ground crops have the chemicals on the skin. Like tomatoes-- they can be washed. Root crops absorb the chemicals all the way into the foodstuff. Washing just removes surface dirt.
Perhaps the person was suggesting that you eat only organic produce from in-ground plants.
at 1:10 PM on Mar. 21, 2010