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Effect of short-term high dietary calcium intake on 24-h energy expenditure, fat oxidation, and fecal fat excretion.
Int J Obes (Lond). 2005 Mar; 29(3):292-301.IJ

Abstract

BACKGROUND

Observational studies have shown an inverse association between dietary calcium intake and body weight, and a causal relation is likely. However, the underlying mechanisms are not understood.

OBJECTIVE

We examined whether high and low calcium intakes from mainly low-fat dairy products, in diets high or normal in protein content, have effects on 24-h energy expenditure (EE) and substrate oxidation, fecal energy and fat excretion, and concentrations of substrates and hormones involved in energy metabolism and appetite.

DESIGN

In all, 10 subjects participated in a randomized crossover study of three isocaloric 1-week diets with: low calcium and normal protein (LC/NP: 500 mg calcium, 15% of energy (E%) from protein), high calcium and normal protein (HC/NP: 1800 mg calcium, 15E% protein), and high calcium and high protein (HC/HP: 1800 mg calcium, 23E% protein).

RESULTS

The calcium intake had no effect on 24-h EE or fat oxidation, but fecal fat excretion increased approximately 2.5-fold during the HC/NP diet compared with the LC/NP and the HC/HP diets (14.2 vs 6.0 and 5.9 g/day; P < 0.05). The HC/NP diet also increased fecal energy excretion as compared with the LC/NP and the HC/HP diets (1045 vs 684 and 668 kJ/day; P < 0.05). There were no effects on blood cholesterol, free fatty acids, triacylglycerol, insulin, leptin, or thyroid hormones.

CONCLUSIONS

A short-term increase in dietary calcium intake, together with a normal protein intake, increased fecal fat and energy excretion by approximately 350 kJ/day. This observation may contribute to explain why a high-calcium diet produces weight loss, and it suggests that an interaction with dietary protein level may be important.

Authors+Show Affiliations

Department of Human Nutrition, Centre for Advanced Food Studies, The Royal Veterinary and Agricultural University, DK-1958 Frederiksberg C, Denmark.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Journal Article
Randomized Controlled Trial
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15672116

Citation

Jacobsen, R, et al. "Effect of Short-term High Dietary Calcium Intake On 24-h Energy Expenditure, Fat Oxidation, and Fecal Fat Excretion." International Journal of Obesity (2005), vol. 29, no. 3, 2005, pp. 292-301.
Jacobsen R, Lorenzen JK, Toubro S, et al. Effect of short-term high dietary calcium intake on 24-h energy expenditure, fat oxidation, and fecal fat excretion. Int J Obes (Lond). 2005;29(3):292-301.
Jacobsen, R., Lorenzen, J. K., Toubro, S., Krog-Mikkelsen, I., & Astrup, A. (2005). Effect of short-term high dietary calcium intake on 24-h energy expenditure, fat oxidation, and fecal fat excretion. International Journal of Obesity (2005), 29(3), 292-301.
Jacobsen R, et al. Effect of Short-term High Dietary Calcium Intake On 24-h Energy Expenditure, Fat Oxidation, and Fecal Fat Excretion. Int J Obes (Lond). 2005;29(3):292-301. PubMed PMID: 15672116.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Effect of short-term high dietary calcium intake on 24-h energy expenditure, fat oxidation, and fecal fat excretion. AU - Jacobsen,R, AU - Lorenzen,J K, AU - Toubro,S, AU - Krog-Mikkelsen,I, AU - Astrup,A, PY - 2005/1/27/pubmed PY - 2005/6/7/medline PY - 2005/1/27/entrez SP - 292 EP - 301 JF - International journal of obesity (2005) JO - Int J Obes (Lond) VL - 29 IS - 3 N2 - BACKGROUND: Observational studies have shown an inverse association between dietary calcium intake and body weight, and a causal relation is likely. However, the underlying mechanisms are not understood. OBJECTIVE: We examined whether high and low calcium intakes from mainly low-fat dairy products, in diets high or normal in protein content, have effects on 24-h energy expenditure (EE) and substrate oxidation, fecal energy and fat excretion, and concentrations of substrates and hormones involved in energy metabolism and appetite. DESIGN: In all, 10 subjects participated in a randomized crossover study of three isocaloric 1-week diets with: low calcium and normal protein (LC/NP: 500 mg calcium, 15% of energy (E%) from protein), high calcium and normal protein (HC/NP: 1800 mg calcium, 15E% protein), and high calcium and high protein (HC/HP: 1800 mg calcium, 23E% protein). RESULTS: The calcium intake had no effect on 24-h EE or fat oxidation, but fecal fat excretion increased approximately 2.5-fold during the HC/NP diet compared with the LC/NP and the HC/HP diets (14.2 vs 6.0 and 5.9 g/day; P < 0.05). The HC/NP diet also increased fecal energy excretion as compared with the LC/NP and the HC/HP diets (1045 vs 684 and 668 kJ/day; P < 0.05). There were no effects on blood cholesterol, free fatty acids, triacylglycerol, insulin, leptin, or thyroid hormones. CONCLUSIONS: A short-term increase in dietary calcium intake, together with a normal protein intake, increased fecal fat and energy excretion by approximately 350 kJ/day. This observation may contribute to explain why a high-calcium diet produces weight loss, and it suggests that an interaction with dietary protein level may be important. SN - 0307-0565 UR - https://www.unboundmedicine.com/medline/citation/15672116/Effect_of_short_term_high_dietary_calcium_intake_on_24_h_energy_expenditure_fat_oxidation_and_fecal_fat_excretion_ DB - PRIME DP - Unbound Medicine ER -