4. Kidney Beans
Red kidney beans are a good source of dietary fiber, as well as protein, magnesium, and several vitamins. It’s usually used in chili, and other Mexican-style foods. It has been known to lower heart disease risk, control diabetes, prevent certain cancers, and contribute to healthy weight loss. Despite the benefits, people allergic to nickel might want to avoid kidney beans, as they have a rather sizable concentration of nickel at 0.45 µg/g, according to Principles of Food Chemistry.
5. Spinach
Spinach is packed with a lot of nutrients, including protein, vitamins, iron, and other minerals. It is also low in calories, making it a perfect food for anybody who wants to be healthy and strong. It has antioxidant properties, and can lower blood pressure, improve bone health, and prevent asthma. While all that sounds good, for the nickel-allergic person, it’s probably not a good idea to eat too much spinach. It contains about 0.39 µg/g of naturally occurring nickel, and while not as high in concentration as others in this list, it’s easy to lose track of how much vegetables you’ve eaten. So be careful when eating spinach!
