The second period, Mesolithic 2, is also called the Natufian culture. The change from Mesolithic 1 to Natufian culture can be dated more closely. The latest date from a Mesolithic 1 site in the Levant is 12,150 BCE. The earliest date from a Natufian site is 11,140 BCE.
Food. Milk, yogurt, and cheese are rich natural sources of calcium and are the major food contributors of this nutrient to people in the United States [ 1 ]. Nondairy sources include vegetables, such as Chinese cabbage, kale, and broccoli.Spinach provides calcium, but its bioavailability is poor.ood. Milk, yogurt, and cheese are rich natural sources of calcium and are the major food contributors of this nutrient to people in the United States [ 1 ]. Nondairy sources include vegetables, such as Chinese cabbage, kale, and broccoli.
Particularly helpful in this regard are green leafy vegetables like spinach, collard greens, mustard greens, turnip greens, and kale. Many fish and shellfishâincluding scallops and sardinesâalso provide concentrated amounts of calcium. Finally, a very helpful non-dairy food for boosting your calcium intake is tofu. One of the reasons for tofu's rich calcium content involves the tofu production process itself since calcium is often used to help cause precipitation of the soy milk (i.e., conversion of the soy milk into a more solid form).