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Related Experiment Video

Updated: Feb 7, 2026

Using a Combination of Indirect Calorimetry, Infrared Thermography, and Blood Glucose Levels to Measure Brown Adipose Tissue Thermogenesis in Humans
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Nutrient induced thermogenesis

G L Carlson1

  • 1Department of Surgery, North West Injury Research Centre, Hope Hospital, Salford, UK.

Bailliere'S Clinical Endocrinology and Metabolism
|May 20, 1998
PubMed
Summary
This summary is machine-generated.

Nutrient-induced thermogenesis (NIT), the energy expended during feeding, appears similar in septic patients and healthy individuals. However, excessive intravenous glucose in septic patients can increase energy expenditure and sympathetic nervous system activity, warranting caution.

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Area of Science:

  • Metabolic Physiology
  • Clinical Nutrition

Background:

  • Nutrient-induced thermogenesis (NIT), the energy expenditure increase post-feeding, remains incompletely understood despite its importance in nutritional management.
  • The impact of critical illness, such as injury or sepsis, on NIT is not well-established, posing challenges for nutritional support in these patients.

Purpose of the Study:

  • To investigate the effect of sepsis on nutrient-induced thermogenesis (NIT).
  • To clarify the clinical significance of NIT in patients with sepsis and the implications for nutritional support.

Main Methods:

  • The study likely involved comparing energy expenditure responses to feeding in septic patients versus healthy controls, though specific methods are not detailed in the abstract.
  • Analysis of metabolic responses to varying nutrient compositions, feeding routes, and rates may have been employed.

Main Results:

  • Despite differences in overall metabolic response, NIT was found to be similar between septic patients and healthy subjects.
  • Excessive intravenous glucose administration in septic patients was associated with significant increases in energy expenditure and sympathetic nervous system activation.

Conclusions:

  • Nutrient-induced thermogenesis (NIT) does not appear to be significantly altered by sepsis itself.
  • Clinical practice should avoid excessive intravenous glucose in septic patients due to potential adverse effects on energy expenditure and the sympathetic nervous system.