Have you been shedding more than usual? You may be lacking in the iron department. Studies have shown that a diet low in iron can lead to hair loss. This is because iron helps oxygen flow to your roots, supplying it with the necessary nutrients your hair needs to stay strong and healthy. Foods rich in iron include chicken, fish, spinach, and kale. You can pair these with blueberries, sweet potatoes, or papayas, which contain high concentrations of vitamin C, to aid in the absorption of iron.