I have read in many places that we should not eat peanuts - as they can have mold.
Other nuts are fine and do not have mold, but be sure to buy RAW and organic.
Raw because the oil in nuts turns rancid in a few hours, when they are roasted... and rancid oil is not good for us.
Raw almonds are easier to digest soaked overnight in pure water. About 10 a day is about the right amount.
2 to 3 Brazil nuts a day is good so as not to have too much selenium.
A handful of walnuts everyday is great for our health.
Speaking of mold.... I have also read in many places the corn develops mold in a few hours after it's picked - so unless you can pick it and eat it right away you should avoid it if you do not want mold in your system.