Comstock Images/Thinkstock Take a look at what nutrition you need in your 30s. Rob Melnychuk/Photodisc/Getty Images Olive oil contains good fats that are healthful for you to consume. ©iStockphoto.com/Tomas Bercic Oranges, strawberries, and limes; all naturally high sources of vitamin C. © iStockphoto.com/Diane Labombarbe Soy products. © iStockphoto.com/aesthesia Assortment of different vitamins and supplements. Stockbyte/Thinkstock A meatless diet aids runners in other ways, too, by passing through the digestive system with greater ease, and reducing the risk of chronic diseases and cancers. © iStockphoto.com/Mark Stout Whole grain foods. iStockphoto.com/Kateryna Govorushchenko Young woman with glass of water. Pixland/Thinkstock The benefits of canola oil are numerous and valuable. Click here to learn all about the benefits of canola oil. Photodisc/Getty Images Prior to pasteurization, many diseases were transmitted through raw milk to children and adults alike. Bambu Production/The Image Bank/Getty Images Some people are just born with a sweet tooth. iStockphoto.com/PoppyB Macaroni and cheese is a bowl of warm, creamy comfort.