Tobacco is a member of the nightshade family, along with tomatoes, potatoes, eggplants, and bell peppers, and they all contain nicotine as well.2603 This is why smokers can’t be identified just by looking for the presence of nicotine in their toenail clippings. Because nicotine is in the food supply, nonsmokers grow out some nicotine into their nails too.2604 The total amount of nicotine we eat in our daily diets is hundreds of times less than we would get from a single cigarette, though. So while we’ve known for at least twenty years that there’s nicotine in ketchup, it’s been dismissed as
...more
