It contributes to the odor of some rancid oils. Rabbits fed rancid fats develop atherosclerosis faster. The role of eating oxidized fats (rancid fats) in humans is not clear. The spermaceti was boiled and strained of impurities to prevent it from going rancid. Commercial pastes also contain food preservatives to keep them from becoming rancid. Scalding it will prevent rancid taste at the expense of antibodies. Oxygen, light and heat all contribute to cooking oils becoming rancid. Tocochromanols protect the seed lipids from oxidizing and becoming rancid. Later American punk bands such as Rancid and Dropkick Murphys have credited Oi! East Bay Punk Rock band Rancid. But then again, I like rancid milk. They have exceptional oxidative stability, and prevent foods from turning rancid readily. The harmful bacteria in rancid food, for example, creates gas. Their music is heavily influenced by such bands as The Clash, Rancid and Ramones. Prior to forming Rancid, Armstrong was in the influential ska punk band Operation Ivy.