A food poison, caused by the toxin produced from the yellow mold, aspergillus flavus.
According to Bob Beede, the tree nut crop farm advisor for Kings and Tulare counties at the University of California Cooperative Extension, simply reduce the Navel Orangeworm populations.
Mostly, yes, but it will also destroy the omega-3 and omega-9 and whatever other polyunsaturated fats as well (and some monounsaturated as well, I think). Polyunsaturated fats are not very stable and at temperatures over 200 degrees will break down. That does not in any ways make them healthier. When fats break down, they become free radicals, which will wreak all sorts of oxidative stress on your body, increasing risk for heart disease, stroke and all sorts of illnesses. If you dry roast the peanuts yourself at 170 degrees Fahrenheit (it'll take a good 24 hours or so to completely roast them), the fats won't break down, but they're probably still contaminated with aflotoxin anyways.
The International Agency for Reearch on Cancer has listed numerous compounds known to cause cancer in humans. Some, like aflotoxin, are sufficiently toxic that a single peanut exhibiting the black mould producing the compound in a shipload of product will require the entire load to be destroyed.Excerpt from International Agency for Research on Cancer data showing known environmental carcinogensGroup 1: Carcinogenic to humansAcetaldehyde (from consuming alcoholic beverages)AflatoxinsAlcoholic beveragesAreca nutAristolochic acid (and plants containing it)Arsenic and inorganic arsenic compoundsAsbestos (all forms) and mineral substances (such as talc or vermiculite) that contain asbestosAzathioprineBenzeneBenzo[a]pyreneBeryllium and beryllium compoundsBetel quid, with or without tobaccondsClonorchis sinensis (infection with)Epstein-Barr virus (infection with)Ethanol in alcoholic beveragesFormaldehydeHelicobacter pylori (infection with)Hepatitis B virus (chronic infection with)Hepatitis C virus (chronic infection with)Human immunodeficiency virus type 1 (HIV-1) (infection with)Human papilloma virus (HPV) types 16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59 (infection with) (Note: The HPV types that have been classified as carcinogenic to humans can differ by an order of magnitude in risk for cervical cancer)Human T-cell lymphotropic virus type I (HTLV-1) (infection with)Ionizing radiation (all types)Kaposi sarcoma herpesvirus (KSHV)/human herpesvirus 8 (HHV-8) (infection with)Leather dustOpisthorchis viverrini (liver fluke; infection with)Radionuclides, alpha-particle-emitting, internally deposited (Note: Specific radionuclides for which there is sufficient evidence for carcinogenicity to humans are also listed individually as Group 1 agents)Radionuclides, beta-particle-emitting, internally deposited (Note: Specific radionuclides for which there is sufficient evidence for carcinogenicity to humans are also listed individually as Group 1 agents)Radium-224 and its decay productsRadium-226 and its decay productsRadium-228 and its decay productsRadon-222 and its decay productsSalted fish (Chinese-style)Schistosoma haematobium (flatworm; infection with)Solar radiationSoot (as found in workplace exposure of chimney sweeps)Tobacco smoke, secondhandTobacco smokingUltraviolet (UV) radiation, including UVA, UVB, and UVC raysWood dustX- and Gamma-radiation