1.  Dairy foods provide your body with a tiny amount of vitamin D.

2.  But be sure to combine your activity program with a diet that includes plenty of calcium and adequate vitamin D.

3.  David J. Mangelsdorf of the Howard Hughes Medical Institute at the University of Texas Southwestern Medical Center and his colleagues determined that LCA activates the receptor for vitamin D.

4.  First and foremost, be sure to consume adequate amounts of calcium and vitamin D.

5.  In fact, it has been calculated that even standing outdoors naked all day in Boston in winter would not result in the recommended serum levels of vitamin D.

6.  --Make sure your diet includes a sufficient intake of calcium and vitamin D.

7.  Other portions of the research will examine the effects of a low-fat diet and the effects of calcium and vitamin D.

8.  Ounce for ounce, nonfat plain yogurt has more calcium than milk, although it contains no vitamin D.

9.  The milk would contain more protein as a result of the added solids but little extra calcium or vitamin D.

10.  This mechanism involves vitamin D.