Energetic consequences of mild Giardia intestinalis infestation in Mexican children

M E Valencia, G McNeill, P Haggarty, S Y Moya, A Pinelli, L Quihui, R Davalos

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This study explored the effects of mild infestation with Giardia on energy intake and expenditure at rest and in activity in an urban Mexican population. Ten boys aged 6-10 y living in low-income sectors in northwest Mexico who had Giardia infestation were recruited. Energy intake, basal metabolic rate (BMR), and total free-living expenditure (TEE) measured by the doubly labeled water method were determined for 7 d during both infestation and after treatment. There was no significant difference in recorded energy intake between the two periods (7.76 and 7.70 MJ/d; P = 0.847). BMR showed no significant change in response to treatment; values were 4.79 and 4.86 MJ/d (P = 0.03). The mean TEE increased by almost 1 MJ/d in the Giardia-free period. This increase was observed in 8 of the 10 subjects; however, the overall change was not statistically significant (P = 0.08).
Original languageEnglish
Pages (from-to)860-865
Number of pages6
JournalThe American Journal of Clinical Nutrition (AJCN)
Issue number4
Publication statusPublished - Apr 1995


  • Giardia Intestinalis
  • parasites
  • energy intake
  • energy expenditure
  • doubly labeled water
  • children
  • Mexico
  • samples


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