This sour citrus fruit is often associated with its tart taste and high acidity level. While lemons exist acidic in nature on its own, they become alkaline when metabolized by the body. As such, consuming lemons will naturally balance the pH level of the body, especially since most western diets tend to produce an acidic-leaning environment in the stomach. The strong antibacterial properties of lemons have been documented since Ancient Egyptian times. Lemons also have a long maritime history that helped made the Age of Exploration possible. Their high vitamin C content makes them a critical stable aboard ships to help ward of sickness. So whether you are a pirate or an entrepreneurial kid with a lemonade stand, lemons are the ingredient of gold.