John J.B. Anderson, PhD, is professor emeritus of Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill.

The author has no conflicts of interest to disclose.

Correspondence: John J.B. Anderson, PhD, Department of Nutrition, Gillings School of Global Public Health, University of North Carolina, Chapel Hill, NC 27514 (jjb_anderson@unc.edu).