2333
As a consequence of this lifestyle and the associated eating habits , most barriers , including the gut , the airways , the skin , the oral cavity , the vagina , the placenta , the blood - brain barrier , etc . , are increasingly permeable .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None