Color by Numbers: When Population Skin Pigmentation Is not Political but a Polytypical Evaluation Exercise to Measure Vitamin D, Diseases, and Skin Pigmentation Angela Chalé, PhD, RD, Christina Chalé, MA, PG Dip Journal of the Academy of Nutrition and Dietetics Volume 116, Issue 8, Pages 1251-1256 (August 2016) DOI: 10.1016/j.jand.2016.04.014 Copyright © 2016 Academy of Nutrition and Dietetics Terms and Conditions
Figure 1 Folate–melanin (eumelanin and pheomelanin) pathway. 6BH4=6R-L-erythro 5,6,7,8-tetrahydrobiopterin. 4a-OH-BH4=4a-hydroxy-tetrahydrobiopterin. GTP=guanosine triphosphate. Pi=inorganic phosphate. THF=tetrahydrofolate. Journal of the Academy of Nutrition and Dietetics 2016 116, 1251-1256DOI: (10.1016/j.jand.2016.04.014) Copyright © 2016 Academy of Nutrition and Dietetics Terms and Conditions
Figure 2 The calibration and categorization of skin pigmentation. Journal of the Academy of Nutrition and Dietetics 2016 116, 1251-1256DOI: (10.1016/j.jand.2016.04.014) Copyright © 2016 Academy of Nutrition and Dietetics Terms and Conditions
Figure 3 Spectrophotometric skin measurement. (Image used with permission of Konica Minolta Sensing Americas, Inc.) Journal of the Academy of Nutrition and Dietetics 2016 116, 1251-1256DOI: (10.1016/j.jand.2016.04.014) Copyright © 2016 Academy of Nutrition and Dietetics Terms and Conditions