However, like men, women tend to consume too much fat. These foods contain the richest dietary sources of calcium. A low calcium intake appears to be one important factor in the development of osteoporosis, a condition that affects one in four post-menopausal women. Vitamin D, found in milk, helps yor body absorb calcium. Some plant foods, such as spinach, rhubarb, and beet greens, contain substances which prevent calcium from being absorbed.
Caffeine also decrease calcium absorption.
A calcium-rich diet is essential throughout life. Food sources of calcium are recommended as they contain other important nutrients. In special circumstances, a calcium supplement may be prescribed. From time to time, everyone feels worn out. However, always being tired may be a sign of iron deficiency.