Calcium and dairy products play major roles in health maintenance and the prevention of chronic disease. Because peak bone mass is not achieved until the third decade of life, it is particularly important for young adults to consume adequate amounts of calcium, protein and vitamin D found in dairy products to support health and prevent osteoporosis later in life. In a study in the July/August issue of the Journal of Nutrition Education and Behavior, researchers report that young people actually reduce their intake of calcium and dairy products as they enter their twenties.

During the transition from middle adolescence (high school) to young adulthood (post-high school), females and males respectively reduced their daily calcium intakes by an average of 153 mg and 194 mg. Although 38% of females and 39% of males increased their intake of calcium over 5 years, the majority of the sample reduced their intake of calcium over 5 years. During middle adolescence, more than 72% of females and 55% of males had calcium intakes lower than the recommended level of 1,300 mg/day. Similarly, during young adulthood, 68% of females and 53% of males had calcium intakes lower than the recommended level of 1,000 mg/day.

Source: Science Daily
http://www.sciencedaily.com/releases/2009/06/090615102032.htm