Author Affiliations: Division of Cardiovascular Medicine and Channing Laboratory, Brigham and Women's Hospital and Harvard Medical School (Drs Mozaffarian and Ludwig), Departments of Epidemiology (Dr Mozaffarian) and Nutrition (Drs Mozaffarian and Ludwig), Harvard School of Public Health, and Optimal Weight for Life Program, Children's Hospital (Dr Ludwig), Boston, Massachusetts.
The discovery of specific dietary insufficiencies as the cause of human disease played a central role in the development of modern nutritional science. In 1753, one of the first clinical trials showed that citrus fruit could prevent scurvy in sailors, leading to the identification of vitamin C as essential for health. By the mid-20th century, protective effects of many nutrients for deficiency diseases had been shown, including thiamine (beriberi), niacin (pellagra), vitamin D (rickets), vitamin A (night blindness), iron (anemia), and iodine (goiter).
Mozaffarian D, Ludwig DS. Dietary Guidelines in the 21st Century—a Time for Food. JAMA. 2010;304(6):681–682. doi:10.1001/jama.2010.1116
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