2639
Taking these factors into account , geographic distribution and seasonality , skin pigmentation , age , and lifestyle may predispose certain populations to be at a higher risk of developing vitamin D insufficiency or deficiency ( 2 ) .
 Chemical: vitamin D
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: vitamin D