3. Squash
There are no too many foods that would contain as many various nutrients as Butternut squash. This is a great source of calcium, potassium, copper, iron. It provides the body with zinc, manganese and magnesium. You can strengthen your immune system if you include squash in your menu. Do not throw away the seed and turn them into a snack by adding a bit of olive oil and baking the seeds until they start to pop.
4. Sesame seeds
Sesame seeds are full of zinc. This mineral helps your skin produce collagen. Not only will they make yous skin more elastic and smoother, they will also provide you with extra energy. You can add some sesame seeds in your favorite salad or cereal to make the usual food taste a bit different.