This week on Ask the Naked Scientists we answer your questions on diet, the brain and meteors. We'll be looking into what foods can help reduce your cholesterol, if it's possible for our brains to shrink and how meteor showers work. We'll also be talking about dementia, smoking oils, how mountains are like sponges and how to recover if the fast-spreading norovirus gets into your system. All that and more of your questions answered on this special podcast from the Naked Scientists. Like this podcast? Please help us by supporting the Naked... Like this podcast? Please help us by supporting the Naked Scientists