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Crit Rev Food Sci Nutr. 2017 Jun 13;57(9):1906-1921. doi: 10.1080/10408398.2015.1033611.

Influence of phytosterol and phytostanol food supplementation on plasma liposoluble vitamins and provitamin A carotenoid levels in humans: An updated review of the evidence.

Author information

1
a INRA, JRU 1019, UNH, CRNH Auvergne, F-63000 Clermont-Ferrand & Clermont Université, Université d'Auvergne, Unité de Nutrition Humaine , Clermont - Ferrand , France.
2
b ANSES, Unité d'Evaluation de Risques liés à la Nutrition , Maison-Alfort , France.
3
c AgroParisTech, CRNH-IdF, UMR914 Nutrition Physiology and Ingestive Behavior , Paris , France.
4
d INRA, CRNH-IdF, UMR914 Nutrition Physiology and Ingestive Behavior , Paris , France.

Abstract

Phytosterols and phytostanols (PAP) compete with cholesterol absorption in the intestine, resulting in a 5-15%-reduction in plasma total and LDL cholesterol. An important issue is the PAP potential to reduce the plasma concentrations of fat-soluble vitamins and provitamin A carotenoids. Here, an update of the scientific evidence is reviewed to evaluate plant PAP-enriched foods impact on plasma fat-soluble vitamins and carotenoid levels, and to discuss potential implications in terms of cardiovascular risk. Based on 49 human interventional and 3 bioavailability studies, results showed that regular consumption, particularly over the long term, of foods fortified with PAP as recommended in labeling does not significantly impact plasma vitamins A, D, and K concentration. A 10% significant median reduction was observed for α-tocopherol. Concerning carotenoids, while 13 studies did not demonstrate statistically significant plasma β-carotene reduction, 20 studies showed significant reductions, with median effect size of -24%. This decline can be mitigated or offset by increased fruits and vegetables consumption. Furthermore, higher cardiovascular risk was observed for differences in plasma β-carotene concentration of the same magnitude as the estimated average decrease by PAP consumption. These results are supported by the only study of β-carotene bioavailability showing decrease in absorption by phytosterols daily intake.

KEYWORDS:

Phytosterol and phytostanol-enriched foods; cardiovascular disease risk; intervention studies; liposoluble vitamins; provitamin A carotenoids

PMID:
26193046
DOI:
10.1080/10408398.2015.1033611
[Indexed for MEDLINE]

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