1861
The two areas of possible concern are that ( i ) nitrate could be a precursor to nitrite in the lower gut , and nitrite is a precursor to nitrosamines , which are implicated in carcinogenesis , and ( ii ) nitrate is implicated in methemoglobinemia , a disorder of red blood cells hemoglobin .
 disease: methemoglobinemia
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 disease: methemoglobinemia