61604
During the first several months of pregnancy , the nutritional requirements do not increase significantly since the rate of growth of the fetus is very slow .
 nutritional
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 nutritional